geant4/ReleaseNotes/ReleaseNotes.11.4.html

0001 <HTML>
0002 <HEAD>
0003 <TITLE>Geant4 11.4 Release Notes</TITLE>
0004 </HEAD>
0005 <BODY BGCOLOR='F0F0F0'>
0006
0007 <P> </P>
0008 <BR>
0009 <P> </P>
0010
0011 <P ALIGN="Center">
0012 <FONT SIZE="+4" COLOR="#238E23">
0013 <B>Geant4 11.4 Release Notes</B>
0014 </FONT>
0015
0016 <TABLE WIDTH="100%">
0017 <TR><TD ALIGN="Right">
0018 <FONT SIZE="-1" COLOR="#5C3317">
0019 <B><I>December 5<SUP>th</SUP>, 2025</I></B>
0020 </FONT>
0021 </TD></TR>
0022 </TABLE>
0023
0024 <BR><BR>
0025 <HR ALIGN="Center" SIZE="7%">
0026 <P>
0027 The code and binary libraries for the supported systems are available
0028 through our <A TARGET="ext" HREF="https://cern.ch/geant4/support/download">Source
0029 Code Web page</A>.
0030 </P>
0031 <P>
0032 <I>We are grateful for the efforts of Geant4 users who have provided
0033    detailed feedback or comprehensive reports of issues.
0034    We thank in particular those who have contributed corrections,
0035    improvements or developments included in this release.</I>
0036 </P>
0037 <P>
0038 Please refer to the
0039 <A TARGET="ext" HREF="https://cern.ch/geant4/support/user_documentation">Geant4
0040 User Documentation</A> for further information about using Geant4.
0041 </P>
0042
0043 <H2><I>Contents</I></H2>
0044 <OL>
0045 <LI><A HREF="#1.">Supported and Tested Platforms</A></LI>
0046 <LI><A HREF="#2.">Supported CLHEP, VecGeom and PTL versions</A></LI>
0047 <LI><A HREF="#3.">Items for migration of the user code</A></LI>
0048 <LI><A HREF="#4.">New Developments and Capabilities</A></LI>
0049 <LI><A HREF="#5.">Expected effects on physics and performance</A></LI>
0050 <LI><A HREF="#6.">Known Run-Time Problems and Limitations</A></LI>
0051 <LI><A HREF="#7.">Compilation Warnings</A></LI>
0052 <LI><A HREF="#8.">Geant4 Software License</A></LI>
0053 <LI><A HREF="#9.">Detailed list of changes and fixes</A></LI>
0054 </OL>
0055
0056 <P> </P>
0057 <A NAME="1."></a>
0058 <HR>
0059
0060 <!-- ============================================== -->
0061
0062 <H2>1. Supported and Tested Platforms</H2>
0063
0064 Platforms:
0065 <UL>
0066 <LI>Linux, gcc-15.2.0.<BR>
0067     Tested on 64 bit architectures (Intel or AMD) with
0068     Alma Linux 9 (based on RedHat Linux Enterprise 9).</LI>
0069 <LI>macOS 26.1 Tahoe with Apple LLVM/Clang-17.<BR>
0070     Tested on 64 bit architectures (Intel or Apple Silicon).</LI>
0071 <LI>Windows-11 with Visual C++ 14.4 (Visual Studio 2022), 64 bits.</LI>
0072 </UL>
0073
0074 More verified and tested configurations (64 bits):
0075 <UL>
0076 <LI>Linux, 11.5/12.1/13.2/14.2, clang-19/20</LI>
0077 <LI>Linux, Intel-icx 2025.3</LI>
0078 <LI>macOS 13.7 Ventura with Apple LLVM/clang-15</LI>
0079 <LI>macOS 14.7 Sonoma with Apple LLVM/clang-16</LI>
0080 </UL>
0081
0082 <P> </P>
0083 <A NAME="2."></A>
0084 <HR>
0085
0086 <!-- ============================================== -->
0087
0088 <H2>2. Supported CLHEP, VecGeom and PTL versions</H2>
0089
0090 This release of Geant4 has been verified with
0091 <A TARGET="ext" HREF="https://cern.ch/clhep/">CLHEP</A>, release <B>2.4.7.2</B>.
0092 Use of a different CLHEP version may cause incorrect simulation results.<BR>
0093 NOTE: an internal module of the relevant CLHEP classes is provided and can be
0094 used as alternative to an external CLHEP library installation.<BR>
0095 A configuration option allows a Geant4 installation to use the
0096 <A TARGET="ext" HREF="https://gitlab.cern.ch/VecGeom/VecGeom/">VecGeom Library</A>
0097 primitives, to replace the original Geant4 solids.<BR>
0098 VecGeom version <B>2.0.0</B> can be adopted when using such configuration.<BR>
0099 PTL version <B>3.0.1</B> or later is required for external installation of the
0100 <A TARGET="ext" HREF="https://github.com/jrmadsen/PTL">PTL tasking library</A>.<BR>
0101 CMake <B>3.16</B> is the minimum version required to build Geant4.
0102
0103 <P> </P>
0104 <A NAME="3."></A>
0105 <HR>
0106
0107 <!-- ============================================== -->
0108
0109 <H2>3. Items for migration of the user code</H2>
0110
0111 Listed here is some relevant information on developments included in this
0112 release.
0113 Note that for all users a full re-installation of libraries (or a full
0114 re-compilation) and a re-compilation of user applications is required.
0115
0116 <P> </P>
0117 <B>General</B>
0118 <P> </P>
0119 <UL>
0120 <LI>The build of the <TT>G4processes</TT> library has been split into two
0121     parts, <TT>G4processes_hadronic</TT> for the hadronic part and
0122     <TT>G4processes_core</TT> for the remainder. <TT>G4processes</TT> remains
0123     valid as interface through CMake supporting creation of categories that
0124     are just an interface to other categories.</LI>
0125 <LI>The default configuration now enables use of Qt6 when selecting Qt support
0126     for visualisation. The user must set <TT>GEANT4_USE_QT_QT5</TT> in
0127     configuration in order to force find/use of Qt5 instead.</LI>
0128 </UL>
0129
0130 <P> </P>
0131 <B>Electromagnetic and optical physics</B>
0132 <P> </P>
0133 <UL>
0134 <LI>New dataset <TT>G4EMLOW-8.8</TT> is required and should be used.</LI>
0135 </UL>
0136
0137 <P> </P>
0138 <B>Hadronic physics</B>
0139 <P> </P>
0140 <UL>
0141 <LI>New hadronic datasets <TT>G4PhotonEvaporation-6.1.2, G4INCL-1.3,
0142     G4PARTICLEXS-4.2</TT> are required and should be used.</LI>
0143 <LI>Note that since release 11.3.2, it has been introduced an option to roll
0144     back the Bertini-like intra-nuclear cascade model (BERT) as it was in
0145     Geant4 version 11.2. This is possible via the C++ interface:
0146     <TT>G4HadronicParameters::Instance()->SetBertiniAs11_2(true)</TT>.
0147     The motivation is that not all thin-target data show consistently that the
0148     developments in BERT model made in version 11.3 are improving the agreement
0149     with simulation.</LI>
0150 </UL>
0151
0152 <P> </P>
0153 <B>Run</B>
0154 <UL>
0155 <LI>In G4PhysicsListHelper, changed ordering of processes: for X-Ray production
0156     using ordering parameter 100 for post step instead of 1000; fixed ordering
0157     for muon capture at rest.
0158     This change may affect users' hard-coded physics-lists.</LI>

0159 </UL>

0160

0161 <P> </P>

0162 <B>Visualization and Modeling</B>

0163 <P> </P>

0164 <UL>

0165 <LI>Removed HepRepFile and Qt3D visualisation drivers, no longer viable

0166     to develop and maintain.</LI>

0167 </UL>

0168

0169 <P> </P>

0170 <B>Data Sets</B>

0171 <P> </P>

0172 <UL>

0173 <LI>This release introduces new data set versions.

0174     Please see the corresponding details in

0175     <A href="#data-notes">Section 9</A> of this document.

0176     <UL>

0177     <LI>New data set versions: <TT>G4PhotonEvaporation-6.1.2, G4INCL-1.3,

0178         G4CHANNELING-2.0, G4EMLOW-8.8, G4PARTICLEXS-4.2</TT>.</LI>

0179     <LI>In order to use <TT>ParticleHP</TT> for charged particles

0180         (protons, deuterons, tritons, He3 and alphas), an <U>optional</U> data

0181         set <TT>G4TENDL-1.4</TT> is required, and can be optionally

0182         downloaded in addition.</LI>

0183     <LI><U>Optional</U> nuclear data sets for use with the LEND (Low Energy

0184         Nuclear Data) Cross Section and Model can be optionally downloaded

0185         here:<BR>

0186         <A HREF="https://cern.ch/geant4-data/datasets/LEND_GNDS2.0_ENDF.BVII.1.tar.gz">LEND_GNDS2.0_ENDF.BVII.1</A> (2.87 Gb),

0187         <A HREF="https://cern.ch/geant4-data/datasets/LEND_GNDS2.0_ENDF.BVIII.0.tar.gz">LEND_GNDS2.0_ENDF.BVIII.0</A> (4.24 Gb),

0188         <A HREF="https://cern.ch/geant4-data/datasets/LEND_GNDS2.0_ENDF.BVIII.1.tar.gz">LEND_GNDS2.0_ENDF.BVIII.1</A> (5.78 Gb).<BR>

0189         The <TT>G4LENDDATA</TT> environment variable should be used to switch

0190         the path to the appropriate nuclear data library unpacked and

0191         installed.</LI>

0192     </UL></LI>

0193 </UL>

0194

0195 <A NAME="4."></A>

0196 <HR>

0197

0198 <!-- ============================================== -->

0199

0200 <H2>4. New Developments and Capabilities </H2>

0201

0202 <B>General</B>

0203 <UL>

0204 <LI>Enabled worker threads to receive next sub-event before completing the

0205     current sub-event in G4WorkerSubEvtRunManager and G4EventManager.</LI>

0206 <LI>New utility class G4VSIntegration, for integration of probability density

0207     function and dynamically sampling of final state.</LI>

0208 <LI>New UI commands to allow limiting the number of warning messages to be

0209     printed out during a run.</LI>

0210 <LI>Introduced a new method <TT>SetDefaultClassification()</TT> in

0211     G4RunManager which enables the default behavior of the stack without

0212     implementing a G4VUserStackingAction.</LI>

0213 </UL>

0214

0215 <B>Geometry & Field</B>

0216 <UL>

0217 <LI>Enabled voxelisation parallelism by default in G4GeometryManager, when

0218     MT/tasks are enabled. Enabled also for potential 2nd (and later) calls.</LI>

0219 <LI>Extended UI command <TT>/geometry/test/run</TT> to support optional overlap

0220     check mode to check for overlaps in the volume tree without duplication in

0221     identical logical volumes.</LI>

0222 <LI>Reimplementated the QSS integration methods, improving readability.

0223     Third order QSS3 method is now available.</LI>

0224 <LI>Revised the default values of parameters in G4FieldParameters, consistent

0225     with previous practice in the relevant classes' constructors. Added methods
0226     to access the field, stepper and equation types in G4FieldParameters.</LI>
0227 <LI>Reorganised and enriched comments in headers to follow Doxygen style in
0228     geometry modules.</LI>
0229 <LI>In G4Box, optimised normal calculation in <TT>DistanceToOut()</TT>.</LI>
0230 <LI>Code optimization in <TT>GetPointOnSurface()</TT> in specific shapes.
0231     Optimised surface area and cubic volume calculation of several geometrical
0232     primitives.</LI>
0233 </UL>
0234
0235 <B>Intercoms</B>
0236 <UL>
0237 <LI>New <TT>@@</TT> keyword to be used in UI commands taking a macro file name;
0238     it allows to create a temporary macro file with the commands being
0239     defined following it, until a <TT>/control/endRecord</TT> command is
0240     specified.</LI>
0241 </UL>
0242
0243 <B>Particles</B>
0244 <UL>
0245 <LI>Updated particle properties to PDG-2025.</LI>
0246 </UL>
0247
0248 <B>Electromagnetic physics</B>
0249 <UL>
0250 <LI>Implemented new option to enable/disable fluctuation of energy loss per
0251     G4Region.</LI>
0252 <LI><U>Optical photons</U>
0253     <UL>
0254     <LI>First implementation of the model approach for X-Ray processes
0255         Cerenkov and Scintillation processes. Their new base class is
0256         G4VXRayModel.</LI>
0257     <LI>Build the integral tables only for materials that have non-empty
0258         material property tables in G4Scintillation and G4Cerenkov.</LI>
0259     <LI>To enable the generation of a burst of optical photons (via
0260         scintillation or Cerenkov radiation), and their propagation, created
0261         new class G4QuasiOpticalPhoton as a G4ParticleDefinition. Defined
0262         related processes G4QuasiCherenkov and G4QuasiScintillation.</LI>
0263     <LI>Code refactoring and optimisations in G4OpBoundaryProcess.</LI>
0264     </UL></LI>
0265 <LI><U>Geant4-DNA</U>
0266     <UL>
0267     <LI>Introduced usage of the new ion ionisation model in DNA Opt8 physics
0268         configuration.</LI>
0269     <LI>New class G4DNABornIonisationModel, a new implementation of the Born
0270         model using a new class G4DNASamplingTable, which allows the sharing
0271         of sampling data between threads.</LI>
0272     <LI>Extended G4DNAELSEPAElasticModel in G4DNA up to 10 MeV for water.</LI>
0273     <LI>New class G4ChemReboundTransportation to handle the rebound
0274         transportation of the molecule.</LI>
0275     </UL></LI>
0276 <LI>New G4LowPAIH2O model for dE/dx in water for p and e-.</LI>
0277 <LI>Updated Reverse MC simulation to work in MT mode.</LI>
0278 </UL>
0279
0280 <B>Hadronic physics</B>
0281 <UL>
0282 <LI>It is now possible to distinguish quasi-elastic from diffractive tracks
0283     in the Fritiof (FTF) string model: the method in G4Track
0284     <TT>GetCreatorModelID()</TT> returns <TT>21350</TT> for FTF quasi-elastic,
0285     and <TT>21600</TT> for FTF diffraction.<BR>
0286     Note: for QGS-based physics lists the separate, dedicated quasi-elastic
0287     model produces tracks with model-ID <TT>21300</TT>; tracks produced by QGS
0288     have model-ID <TT>22200</TT> (for both diffractive and non-diffractive
0289     interactions).</LI>
0290 <LI>In G4HadronicProcess, removed warning for the case when K0 and anti-K0
0291     are transformed into K0S or K0L.</LI>
0292 <LI>Updated algorithms for the integration of probabilities and sampling of
0293     kinetic energy of the emitted fragments in hadronic de-excitation and
0294     pre-equilibrium. Expected more accurate spectra.</LI>
0295 <LI>New alternative hadronic de-excitation FermiBreakUp model, G4FermiBreakUpAN,
0296     and support classes. This alternative option can be enabled via C++
0297     interface in G4DeexPrecoParameters:
0298     <TT>SetFermiBreakUpType(G4FermiBreakUpType::bModelAN)</TT>.</LI>
0299 <LI>Extension of the INCLXX model to handle anti-neutron at rest and in-flight.
0300     This is used by default in INCLXX-based physics lists.</LI>
0301 <LI>In G4ChargeExchange, implemented the angular distribution of pion charge
0302     exchange according to the V. Lubovitsky parameterisation for different
0303     reaction channels.</LI>
0304 <LI>Major update of GIDIplus interface in LEND hadronic model, with refactored
0305     C++ code, including use of official GNDS formatted data. Added feature for
0306     high-fidelity gamma cascades following reactions such as neutron capture
0307     and inelastic scattering.</LI>
0308 </UL>
0309
0310 <B>Physics Lists</B>
0311 <UL>
0312 <LI>For the three physics lists QGSP_BIC_HP, QGSP_BIC_HPT and QGSP_BIC_AllHP,
0313     whereby the electromagnetic physics option 4 is used by default, it is now
0314     possible to utilise the electromagnetic standard (i.e. option 0) via the
0315     physics list factory by adding the suffix <TT>_EM0</TT> to their names
0316     (i.e. QGSP_BIC_HP_EM0, QGSP_BIC_HPT_EM0, and QGSP_BIC_AllHP_EM0).</LI>
0317 <LI>The INCLXX-based physics lists (e.g. FTFP_INCLXX and QGSP_INCLXX) are
0318     using now INCLXX (instead of FTFP as before) for the annihilation (at rest
0319     and in-flight) of anti-neutrons.</LI>
0320 <LI>The optional NuDEX nuclear de-excitation model (introduced in Geant4
0321     version 11.3 only for neutron capture in the physics list QGSP_BERT_HP)
0322     is available also for neutron capture in the QGSP_BIC_HP and QGSP_BIC_AllHP
0323     physics lists.</LI>
0324 <LI>Added G4HadronPhysicsLEND in physics-lists to configure neutron and photon
0325     induced processes from LEND.</LI>
0326 <LI>The G4EmDNABuilder class provides configuration of DNA physics for all
0327     particles and all standard + DNA configurations.</LI>
0328 <LI>Recommended DNA physics lists are: G4EmDNAPhysics_option2,
0329     G4EmDNAPhysics_option4, G4EmDNAPhysics_option6, G4EmDNAPhysics_option8.</li>
0330 <LI>For electrons the upper limit of DNA models is <TT>1 MeV</TT>.
0331     For protons and ions the upper limit of DNA models is <TT>300 MeV/u</TT>.
0332     For higher energy the standard physics is used.</LI>
0333 </UL>
0334
0335 <B>Visualization and Interfaces</B>
0336 <UL>
0337 <LI>Updated g4tools and ToolsGS visualisation driver to use OpenGL-3.2 when
0338     co-working with Vtk.</LI>
0339 <LI>First version of generic time windowing of trajectory slices in
0340     visualisation. Introduced Time Window tab in Qt UI.</LI>
0341 <LI>Introducing RayTracerQt visualisation driver, enabled when GEANT4_USE_QT
0342     configuration is enabled.</LI>
0343 <LI>Set default configuration to use Qt6 when selecting Qt support.
0344     User must set GEANT4_USE_QT_QT5 to force find/use of Qt5.</LI>
0345 <LI>Make the TSG driver the "flagship" visualization driver.</LI>
0346 <LI>Re-instated transparency slider in visualization GUI.</LI>
0347 <LI>In G4OpenGLQtViewer, fixed the original pick feature, which was
0348     inadvertently broken, to show pick info window.</LI>
0349 <LI>General optimization of zoom behavior in visualization when using mouse
0350     wheel.</LI>
0351 </UL>
0352
0353 <B>Examples</B>
0354 <UL>
0355 <LI>Introduced the CaloDiT pre-trained ML model for fast simulation
0356     in <I>Par04</I> extended example, offering greater accuracy.</LI>
0357 <LI>New advanced example <I>IAEAphsp</I> demonstrating how to use IAEAphsp
0358     files as input source (i.e. as a primary generator) and how to produce
0359     IAEAphsp outputs at given scoring planes. Reference paper:
0360     M.A. Cortes-Giraldo et al., Int J Radiat Biol 88(1-2): 200-208 (2012).</LI>
0361 <LI>New advanced example <I>microelec_SEY</I> simulating the passage of
0362     incident electrons [10eV, 10keV] in a stack of 6 layers, where thicknesses
0363     and material nature can be user defined. The number of electrons re-emitted
0364     by the irradiated surface is counted by a spherical detector surrounding
0365     the whole geometry and providing the SEY rate in a csv file as a function
0366     of the incident energy.</LI>
0367 <LI>New extended example for channeling, <I>ch5</I>, primarily designed to
0368     simulate positron sources based on oriented crystals.</LI>
0369 <LI>New G4DNA extended examples: <I>microtrack</i>, implementing a geometry to
0370     calculate microdosimetry quantities for ion tracks in liquid water at a
0371     given energy, ensuring secondary electron equilibrium when needed;
0372     <I>molcounters</I>, showing how to use the new molecule counter manager
0373     system and how to write custom molecule counters; <I>phasespace</I>,
0374     showing how to simulate particle tracks in a cube of liquid water
0375     containing a scoring sphere, placed in its centre; <I>radial</I>,
0376     showing how to simulate radial dose profiles in liquid water from incident
0377     ions using the Geant4-DNA physics processes and models.</LI>
0378 </UL>
0379
0380 <A NAME="5."></A>
0381 <HR>
0382
0383 <!-- ============================================== -->
0384
0385 <H2>5. Expected effects on physics and computing performance</H2>
0386
0387 <B>Electromagnetic physics</B>
0388 <UL>
0389 <LI>Updated Goudsmit-Saunderson multiple-scattering model to optionally use the
0390     most accurate algorithm; updated G4EmStandardPhysicsGS according to the
0391     changes in the GS multiple scattering model, the standard GS EM constructor
0392     is expected to provide accurate e-/e+ simulations now (similar accuracy as
0393     in Livermove, Penelope and option 4).</LI>
0394 <li>It is expected that less memory will be used by G4Cerenkov and
0395     G4Scintilation processes.</li>
0396 <li>G4EmCalculator: now providing correct computation of dEdx for ions.</li>
0397 </UL>
0398
0399 <B>Hadronic physics</B>
0400 <UL>
0401 <LI>Hadronic showers remain stable, for all physics lists.</LI>
0402 </UL>
0403
0404 <P> </P>
0405 <A NAME="6."></A>
0406 <HR>
0407
0408 <!-- ============================================== -->
0409
0410 <H2>6. Known Run-Time Problems and Limitations</H2>
0411 For a complete list of outstanding run-time problems and to submit any
0412 problem you may find while running this version of Geant4, please refer
0413 to the
0414 <A TARGET="ext" HREF="https://bugzilla-geant4.kek.jp/">Geant4 Problem
0415 Reporting System</A>.
0416
0417 <P> </P>
0418 <A NAME="7."></A>
0419 <HR>
0420
0421 <!-- ============================================== -->
0422
0423 <H2>7. Compilation Warnings</H2>
0424
0425 There may be a few compilation warnings on some platforms.
0426 We do not believe that any of these lead to incorrect run-time behaviour.
0427
0428 <P> </P>
0429 <A NAME="8."></A>
0430 <HR>
0431
0432 <!-- ============================================== -->
0433
0434 <H2>8. Geant4 Software License</H2>
0435
0436 A Software License applies to the Geant4 code.
0437 Users must accept this license in order to use it.<BR>
0438 The details and the list of copyright holders is available at
0439 <A href="https://cern.ch/geant4/license">https://cern.ch/geant4/license</A>
0440 and also in the text file <TT>LICENSE</TT> distributed with the source code.
0441
0442 <P> </P>
0443 <A NAME="9."></A>
0444 <HR>
0445
0446 <!-- ============================================== -->
0447
0448 <H2>9. Detailed list of changes and fixes</H2>
0449
0450 These are the main new features/fixes included in this release since the
0451 last patched public release (for more detailed lists of fixes/additions,
0452 please refer to the corresponding History files provided in most packages):
0453
0454 <P> </P>
0455
0456 <A NAME="conf-notes">
0457 <H3><I>Configuration</I></H3></A>
0458 <UL>
0459 <LI><U>CMake</U>
0460     <UL>
0461     <LI>Set default configuration to use Qt6 when selecting Qt support.
0462         User must set <TT>GEANT4_USE_QT_QT5</TT> to force find/use of Qt5.</LI>
0463     <LI>Support creation of categories that are just an interface to other
0464         categories. Needed to support splitting of libraries whilst retaining
0465         old target names for backward link/build compatibility.</LI>
0466     <LI>Include external categories (G4zlib etc) in link resolution for unit
0467         test executables.</LI>
0468     <LI>Export CMAKE_EXPORT_COMPILE_COMMANDS setting from toolkit to the build
0469         of any test done by geant4_add_test to assist use of clang-tidy and
0470         other tooling.</LI>
0471     <LI>Add ENVIRONMENT to any build step of geant4_add_test for consistency
0472         and to allow easier propagation of additional build settings.</LI>
0473     <LI>Added option to add shorten-64-to-32 warning to command line macOS
0474         build flags to match Xcode.</LI>
0475     <LI>Updated clang-format settings and removed obsolete G4ClangFormat module.
0476         Use of clang-format will be through IDEs or pre-commit rather than build
0477         system going forward.</LI>
0478     <LI>Removed all references to HepRepFile and Qt3D visualisation drivers.</LI>
0479     <LI>New data sets <TT>G4PhotonEvaporation-6.1.2</TT>,
0480         <TT>G4CHANNELING-2.0</TT>, <TT>G4INCL-1.3</TT>,
0481         <TT>G4EMLOW-8.8</TT>, <TT>G4PARTICLEXS-4.2</TT>.</LI>
0482     <LI>Updated tag-IDs for 11.4.</LI>
0483     </UL></LI>
0484 <LI><U>GNUmake</U>
0485     <UL>
0486     <LI>Updated system scripts for Qt settings: set Qt6 as default.</LI>
0487     <LI>Correction in generation of geant.[c]sh and geant4.bat on Windows.</LI>
0488     <LI>Replaced linking to <TT>G4processes</TT> library with linking to the
0489         two components it has been split into.</LI>
0490     <LI>Removed all references to HepRepFile and Qt3D visualisation drivers.</LI>
0491     </UL></LI>
0492 </UL>
0493
0494 <A NAME="ana-notes">
0495 <H3><I>Analysis</I></H3></A>
0496 <UL>
0497 <LI>New implementation of generic 'G4Analysis::GetHnType()' and 'IsProfile()'
0498     functions, which do not rely on the histogram/profile name position in
0499     the long type name provided via tools 's_class()'.</LI>
0500 <LI><U>Internal changes</U>:
0501     <UL>
0502     <LI>Modernized g4tools macro-based for loops with range-based for.</LI>
0503     <LI>Use current non-deprecated g4tools n-tuple columns interface in XML.</LI>
0504     </UL></LI>
0505 <LI><U>Fixes</U>:
0506     <UL>
0507     <LI>Fix in G4THnMessenger; improved top directory description:
0508         this fixes "...Title not available..." description in the command tree.</LI>
0509     <LI>In G4VAnalysisManager, fixed Coverity reported defect in
0510         <TT>SetNtupleManager()</TT>: added protection against de-reference
0511         of potentially null field.</LI>
0512     <LI>Added a protection against a call to non-existing n-tuple manager in
0513         G4VAnalysisManager. Fixes a problem happening when all created n-tuples
0514         are inactivated and a file is not open.</LI>
0515     </UL></LI>
0516 </UL>
0517
0518 <A NAME="digits-notes">
0519 <H3><I>Digitization &amp; Hits</I></H3></A>
0520 <UL>
0521 <LI>Implemented mechanism to weight score in G4VPrimitiveScorer.
0522     The weighting is activated with 'scoreWeighted' option (default is off).
0523     The applied weighting function is defined via std::function which can be
0524     set via a new setter method. The weighting function is taken into account
0525     only in the G4PSCellFlux scorer type.</LI>
0526 </UL>
0527
0528 <A NAME="emstd-notes">
0529 <H3><I>Electromagnetic Processes</I></H3></A>
0530 <UL>
0531 <LI><B>Adjoint</B>
0532     <UL>
0533     <LI>In G4ContinuousGainOfEnergy, updated signature of
0534         <TT>CorrectionsAlongStep()</TT>.</LI>
0535     <LI>Fixed compilation warning on Intel/icx compiler for overlapping
0536         comparison on condition in G4AdjointAlongStepWeightCorrection.</LI>
0537     </UL></LI>
0538 <LI><B>DNA</B>:
0539     <UL>
0540     <LI>Added new G4DNARuddIonisationDynamicModel, which uses charge from
0541         G4DynamicParticle. The model is applicable for all ions.</LI>
0542     <LI>G4DNABornIonisationModel: new implementation of the Born model using
0543         G4DNASamplingTable class; use stationary and fast flags from EM
0544         parameters.</LI>
0545     <LI>G4DNARuddIonisationModel, G4DNABornIonisationModel1 and
0546         G4DNABornIonisationModel2: fixed definition of the stationary code via
0547         G4EmParameters.</LI>
0548     <LI>Extended G4DNAELSEPAElasticModel up to <TT>10 MeV</TT> for water.
0549         Requires new data-set G4EMLOW-8.8.</LI>
0550     <LI>Force cross-section to zero below limit of validity of
0551         G4DNACPA100ElasticModel.</LI>
0552     <LI>G4DNASamplingTable, new class allowing the sharing of  sampling data
0553         between threads.</LI>
0554     <LI>Enabled atomic de-excitation in stationary regime for Rudd and Born
0555         models.</LI>
0556     <LI>Updated IRT-syn model for high LET applications.
0557         Fixed the IRT_syn model (Stepper) to ensure it does not use minTimeStep
0558         (default = 1 ps) when DNA reactions do not yet share the same
0559         minTimeStep (used to optimize the chemistry).</LI>
0560     <LI>Fixed the missed Equilibrium process in G4DNAMakeReaction for
0561         particle-based models (SBS, IRT_syn).</LI>
0562     <LI>Correction in the G4DNAScavengerProcess for IRT-syn model.</LI>
0563     <LI>Created G4ChemReboundTransportation to handle the rebound transportation
0564         of the molecule.</LI>
0565     <LI>Replaced the G4MoleculeCounter singleton with G4MoleculeCounterManager
0566         for managing counters.</LI>
0567     <LI>Replaced <TT>shared_ptr</TT> with <TT>unique_ptr</TT> and raw for
0568         manager counters.</LI>
0569     <LI>In G4PhysChemIO, removed dependency on <TT>analysis</TT> module.</LI>
0570     <LI>Deleted exception of no reactant (or reactions for the defined molecules)
0571         that should return nullptr for no reaction data.</LI>
0572     </UL></LI>
0573 <LI><B>Low Energy</B>
0574     <UL>
0575     <LI>G4LivermorePhotoElectricModel: reorganisation of initialisation and
0576         data destruction.</LI>
0577     <LI>In G4AtomicTransitionManager, G4UAtomicDeexcitation, use
0578         <TT>std::size_t</TT> and few other cosmetic changes.</LI>
0579     <LI>G4IonParametrisedLossModel: updated computation of ion effective charge
0580         according to modifications in electromagnetic/utils.
0581         Addressing problem report
0582         <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2664">#2664</A>.</LI>
0583     <LI>G4MicroElecElasticModel_new, G4MicroElecInelasticModel_new,
0584         G4MicroElecLOPhononModel and G4MicroElecSurface: updated models using
0585         more data files.</LI>
0586     <LI>In G4hIonEffChargeSquare, fixed reported Coverity defect.</LI>
0587     <LI>Fixed compilation warnings on Intel/icx compiler for overlapping
0588         comparison on condition in G4eIonisationSpectrum, by removing checks
0589         on numerical condition which never happens.</LI>
0590     </UL></LI>
0591 <LI><B>Muons</B>
0592     <UL>
0593     <LI>G4RiGeMuPairProductionModel, G4RiGeAngularGenerator: fixes to the
0594         angular distribution of electrons and positrons.</LI>
0595     <LI>G4MuPairProduction: enable RiGe model via G4EmParameters.</LI>
0596     <LI>G4MuPairProductionModel, G4MuPairProduction: cleanup for handling
0597         of data.</LI>
0598     </UL></LI>
0599 <LI><B>Pii</B>
0600     <UL>
0601     <LI>Use <TT>const G4String&</TT> in <TT>G4hImpactIonisation::InitializeMe()</TT>

0602         to avoid unnecessary copy, reported by Coverity.</LI>

0603     </UL></LI>

0604 <LI><B>Standard</B>

0605     <UL>

0606     <LI>G4UrbanMscModel: cosmetic change for Opt3 case; minor code improvement
0607         and updated comments to the code. Not affecting any result.</LI>
0608         Simplification of the step limit algorithm for Opt3 (EMY) configuration
0609         of EM physics, slightly improving CPU without degradation of the
0610         accuracy. Changed <TT>geommin</TT> parameter value from <TT>10^-3 mm</TT>
0611         to <TT>10^-6 mm</TT>; this change is effective to EM option3 physics
0612         configuration.</LI>
0613     <LI>G4GoudsmitSaundersonMscModel, G4GoudsmitSaundersonTable,
0614         G4GSMottCorrection, and G4GSPWACorrections: removed all other electron
0615         stepping and boundary crossing algorithms from the Goudsmit-Saunderson
0616         multiple-scattering model, except the accurate one; updated the class
0617         descriptions, no physics change is expected in the Livermore, Penelope and
0618         standard option4 EM constructors while the standard GS constructor now
0619         will be more accurate. The current form of the Goudsmit-Saunderson Msc
0620         model, keeping only its most accurate settings, fully reflects the
0621         corresponding <A HREF="https://arxiv.org/pdf/2410.13361">technical note</A>.</LI>
0622     <LI>G4eBremsstrahlungRelModel, G4PairProductionRelModel: simplifed handling
0623         of LPM functions by precomputing and factoring the related data to a
0624         new G4LPMFunction (header only) utility.</LI>
0625     <LI>G4eDPWACoulombScatteringModel, G4eDPWAElasticDCS: fixed some of the
0626         mixed simulation mode functionalities of the numerical ELSEPA DCS based
0627         model for e-/e+ Coulomb scattering (which are still not utilised).</LI>
0628     <LI>Added G4LowPAIH2O model for dE/dx in water for p and e-.</LI>
0629     <LI>Reverted changes introduced in release 11.3 for static data
0630         initialization in G4eBremsstrahlungRelModel.</LI>
0631     <LI>G4BraggModel, G4BraggIonModel, G4BetheBlochModel, G4AtimaEnergyLossModel,
0632         G4LindhardSorensenIonModel and G4LowPAIH2O: store ion effective charge
0633         square in each model, allowing to compute dEdx by G4EmCalculator.
0634         Addressing problem report
0635         <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2664">#2664</A>.</LI>
0636     <LI>G4BraggIonGasModel, G4BetheBlochIonGasModel: fixed computation of
0637         dynamic charge.</LI>
0638     <LI>G4BraggModel: fixed two compound formula typos in MolecIsInZiegler1988
0639         for methanol and chlorotrifluoromethane. Restored application of the
0640         ChemicalFactor for these compounds.</LI>
0641     <LI>G4eplusAnnihilation: added positronium lifetime, which was forgotten.</LI>
0642     </UL></LI>
0643 <LI><B>Utils</B>
0644     <UL>
0645     <LI>New base class G4VXRayModel for X-ray processes. Adapted classes
0646         G4OpticalParameters, G4OpticalParametersMessenger and G4LossTableManager
0647         to configure and use G4VXRayModel.</LI>
0648     <LI>G4EmParametersMessenger: added UI command to enable/disable 5D pair
0649         production model by muons.</LI>
0650     <LI>G4EmUtility, G4EmDataHandler, G4EmDataRegistry: removed minor memory
0651         leaks and improved destruction at exit.</LI>
0652     <LI>G4EmParameters, G4EmParametersMessenger, G4EmUtility, G4LossTableBuilder,
0653         G4VEnergyLossProcess: implemented new option to enable/disable
0654         fluctuation of energy loss per G4Region.</LI>
0655     <LI>G4EmParameters, G4EmLowEParameters: added DNA upper limits in energy.</LI>
0656     <LI>G4VEmProcess: added call to StartTracking(..) for all used models,
0657         which need access to G4Track pointer.</LI>
0658     <LI>G4VEmProcess, G4VEnergyLossProcess, G4EmDataHandler, G4EmDataRegistry:
0659         cleanup handling of tables; removed unused methods and headers.</LI>
0660     <LI>G4EmCalculator: provided computation of dEdx for ions.
0661         Addressing problem report
0662         <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2664">#2664</A>.</LI>
0663     <LI>G4VEmModel, G4VEnergyLossProcess: changed signature of the method
0664         <TT>CorrectionsAlongStep()</TT> to something more convenient for
0665         G4EmCalulator.</LI>
0666     <LI>G4OpticalParameters, G4OpticalParametersMessenger: introduced
0667         configurable options to offload the generation of optical photons for
0668         the Cerenkov and Scintillation processes.</LI>
0669     <LI>G4OpticalParameters: added QuasiCerenkov and QuasiScintillation in the
0670         process activation map.</LI>
0671     <LI>G4VXRayModel, G4OpticalParameters: added extra methods needed for new
0672         Cerenkov processes and models.</LI>
0673     </UL></LI>
0674 <LI><B>Xrays</B>
0675     <UL>
0676     <LI>In G4Scintillation, build the scintillation integral tables for
0677         materials that have non-empty material property tables and added
0678         method BuildInverseCdfTable(). Relocate loop-invariant variables
0679         outside the photon generation loop.</LI>
0680     <LI>In G4Cerenkov, build the Cerenkov integral only for materials that
0681         have non-empty material property tables. Relocate loop-invariant
0682         variables outside the photon generation loop.</LI>
0683     <LI>Added physics model catalog IDs and class descriptions for
0684         G4QuasiCerenkov and G4QuasiScintillation.</LI>
0685     <LI>Added G4QuasiScintillation, adding offloading capability for
0686         scintillation photon generation.</LI>
0687     <LI>Added G4QuasiCerenkov, adding offloading capability for Cerenkov photon
0688         generation.</LI>
0689     <LI>Added new classes G4GeneralCerenkov and G4StandardCerenkovModel with the
0690         first implementation of the model approach for X-Ray processes G4Cerenkov,
0691         G4Scintillation and G4GeneralCerenkov; fixed <TT>IsApplicable()</TT>
0692         method for UnknownParticle type; use dynamic charge and kinematics for
0693         these processes.</LI>
0694     <LI>Added class G4ScintillationQuasiTrackInfo, a concrete implementation of
0695         G4VAuxiliaryTrackInformation used to store metadata associated with a
0696         quasi-scintillation track generated during the scintillation process.</LI>
0697     <LI>Added new class G4CerenkovQuasiTrackInfo, a concrete implementation of
0698         G4VAuxiliaryTrackInformation used to store metadata associated with a
0699         quasi-Cerenkov track generated during the Cerenkov process.</LI>
0700     <LI>Added G4QuasiOpticalData, a common data structure used for Cerenkov and
0701         Scintillation photon sampling.</LI>
0702     </UL></LI>
0703 </UL>
0704
0705 <A NAME="event-notes">
0706 <H3><I>Event</I></H3></A>
0707 <UL>
0708 <LI>G4EventManager: enabling to receive next sub-event before completing the
0709     current sub-event when used in the worker thread of sub-event parallel mode.</LI>
0710 <LI>G4Event, G4SubEvent: added some flags and pointers to enable the above.</LI>
0711 <LI>G4AdjointPrimaryGenerator: made it G4ThreadLocal and added <TT>GetInstance()</TT>
0712     method to fix a bug in Reverse MC simulation in MT mode.</LI>
0713 </UL>
0714
0715 <A NAME="externals-notes">
0716 <H3><I>Externals</I></H3></A>
0717 <UL>
0718 <LI><U>G4tools</U>:
0719     <UL>
0720     <LI>Updated to version 8.0.0</LI>
0721     <LI>Updated tools from OpenGL-1.1 to OpenGL-3.2, enabled by setting macro
0722         TOOLS_USE_GL_VERSION_3_2. Fixed rendering for G4Polymarker dots on macOS.
0723         In Qt,X11,Xt,Windows, enforce immediate rendering in event loop
0724         processing.</LI>
0725     <LI>Implemented windows_size and render_area_size methods; fixed setting of
0726         mouse position in the wheel_rotation_event. Handle the shift and control
0727         modifiers in the mouse_[down,up,move]_event and wheel_rotation_event.</LI>
0728     <LI>In glarea, in <TT>mouseMoveEvent()</TT> for Qt5, corrected a bad
0729         cut/paste when creating the mouse_move_event.</LI>
0730     <LI>In *ntuple, fix in the initialise() method, to switch from "warning" to
0731         "error" and return false if the name of a booking column is not found
0732         in the file. Addressing problem report
0733         <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2657">#2657</A>.</LI>
0734     <LI>Removed obsolete <TT>tools::mem</TT> class and TOOLS_MEM blocks that
0735         use it.</LI>
0736     <LI>Rationalised main headers by merging related functionality.</LI>
0737     <LI>Removed unused classes, class member functions/data members.</LI>
0738     <LI>Removed additional headers, free functions no longer used.</LI>
0739     <LI>Removed unused functions and headers.</LI>
0740     <LI>Removed no longer required <TT>cmem_alloc_copy()</TT> function.</LI>
0741     <LI>Removed commented out blocks and never touched preprocessor blocks.</LI>
0742     <LI>Added <TT>tools/sg/shade_model</TT> node to handle Gouraud shading.</LI>
0743     <LI>Fixes to avoid cases of "ToolsSG-ZB too much zoom in" crash.</LI>
0744     </UL></LI>
0745 <LI><U>Zlib</U>:
0746     <UL>
0747     <LI>Updated <TT>zlib</TT> to version 1.3.1. Prior Geant4 patches are
0748         retained.</LI>
0749     </UL></LI>
0750 </UL>
0751
0752 <A NAME="gen-notes">
0753 <H3><I>General Processes</I></H3></A>
0754 <UL>
0755 <LI><B>Biasing</B>
0756     <UL>
0757     <LI>Fixed initialisation in G4ParticleChangeForNothing, responsible for
0758         crash when enabling track verbosity.</LI>
0759     </UL></LI>
0760 <LI><B>Optical</B>
0761     <UL>
0762     <LI>G4OpBoundaryProcess: refactored code for readability and efficiency.
0763         Reuse local variables for trigonometric and exponential function results,
0764         as well as other repeated expressions. Improved code readability by
0765         replacing simple if-else clauses with ternary operators and made other
0766         minor rearrangements. Replaced <TT>h_Planck*c_light</TT> with a static
0767         function for clarity and reuse. Refactored boundary handling at
0768         dielectric-dielectric interfaces by replacing goto with a do-while loop
0769         to improve readability. Extracted transmission logic into a new inline
0770         function <TT>DoTransmission()</TT> and introduced <TT>constexpr</TT>
0771         helper <TT>IsBackpainted()</TT> to identify backpainted surfaces.</LI>
0772     <LI>In G4OpMieHG, removed redundant <TT>acos()/cos()</TT> calls in angular
0773         sampling to improve performance and readability.</LI>
0774     <LI>G4OpWLS, G4OpWLS2: improved WLS photon energy sampling; enforce energy
0775         below the primary photon's energy.</LI>

0776     </UL></LI>

0777 </UL>

0778

0779 <A NAME="geo-notes">

0780 <H3><I>Geometry</I></H3></A>

0781 <UL>

0782 <LI>Reorganised and enriched comments in headers to follow Doxygen style.</LI>

0783 <LI>Applied clang-tidy fixes.</LI>

0784 <LI><B>Biasing</B>

0785     <UL>

0786     <LI>Removed empty source files for G4VGCellFinder, G4VImportanceAlgorithm,

0787         G4VImportanceSplitExaminer, G4VIStore, G4VWeightWindowStore and

0788         G4VWeightWindowAlgorithm.</LI>

0789     </UL></LI>

0790 <LI><B>Divisions</B>

0791     <UL>

0792     <LI>Removed unused data in G4VDivisionParameterisation.</LI>

0793     </UL></LI>

0794 <LI><B>Magnetic Field</B>

0795     <UL>

0796     <LI>Updated implementation of QSS integration method to QSS version-2.</LI>

0797     <LI>Made QSS3 a choice in G4ChordFinder and G4QSSMessenger.</LI>

0798     <LI>Addressed Coverity issues (memory leak, initialisation) in G4QSStepper

0799         and G4QSSubstepStruct. In G4QSStepper, cleanup of constructors.</LI>

0800     <LI>Make consistent use of the parameters introduced in G4FieldParameters

0801         in field classes: extracted default parameters values as constexpr in

0802         new namespace G4FieldDefaults, so that they can be used in other classes

0803         as default parameters in functions declarations; replaced default values

0804         in G4FieldManager and G4ChordFinder with G4FieldDefaults constants.</LI>

0805     <LI>Added functions for accessing the field, stepper and equation types

0806         using the enum types defined in G4FieldParameters.</LI>

0807     <LI>Updated enums G4EquationType and G4StepperType with missing constants

0808         with a comment that these equations/templated steppers are not built by

0809         G4FieldBuilder.</LI>

0810     <LI>Renamed <TT>StepperType()</TT> in G4DormandPrince745 to

0811         <TT>StepperTypeName()</TT>.</LI>

0812     <LI>Moved inline implementations to .icc file for G4ChargeState and for

0813         G4FieldParameters.</LI>

0814     <LI>Removed not implemented methods in G4ChordFinder, G4DoLoMcPriRK34 and

0815         G4FieldSetup.</LI>

0816     <LI>Minor code cleanup and formatting.</LI>

0817     </UL></LI>

0818 <LI><B>Management</B>

0819     <UL>

0820     <LI>Enabled voxelisation parallelism by default in G4GeometryManager, when

0821         MT/tasks are enabled. Enabled also for potential 2nd (and later) calls

0822         in runs after geometry was changed.</LI>

0823     <LI>G4VSolid: set seed in <TT>EvaluateCubicVolume()</TT> and

0824         <TT>EvaluateSurfaceArea()</TT> to ensure reproducibility of the

0825         resulting value.</LI>

0826     <LI>G4GeomTools: added functions <TT>HyperboloidSurfaceArea()</TT>,

0827         <TT>HypeStereo()</TT> and <TT>TwistedTubeBoundingTrap()</TT>.</LI>

0828     <LI>Removed empty source files for G4ErrorSurfaceTarget and

0829         G4ErrorTanPlaneTarget.</LI>

0830     <LI>Moved inline implementations to .icc file for G4UAdapter.</LI>

0831     </UL></LI>

0832 <LI><B>Navigation</B>

0833     <UL>

0834     <LI>Extended UI command <TT>/geometry/test/run</TT> to support optional

0835         overlap check mode: depending on the selected mode, it invokes either

0836         <TT>TestRecursiveOverlap</TT> (default and original algorithm) or

0837         <TT>TestOverlapInTree</TT>, allowing to check for overlaps in the

0838         volume tree without duplication in identical logical volumes.</LI>

0839     <LI>Removed declared but not implemented methods in G4VoxelNavigation,

0840         G4ParameterisedNavigation, G4VoxelSafety and G4PathFinder.</LI>

0841     </UL></LI>

0842 <LI><B>Solids (Boolean)</B>

0843     <UL>

0844     <LI>G4MultiUnion: fix in <TT>GetSurfaceArea()</TT> and some optimisation

0845         to use <TT>G4QuickRand()</TT>. In <TT>GetLocalPoint()</TT>,

0846         <TT>GetLocalVector()</TT>, <TT>GetGlobalPoint()</TT> and

0847         <TT>GetGlobalVector()</TT>, make direct usage of the transformation

0848         matrix elements. Removed declared but not implemented methods

0849         and moved inline implementations to .icc file.</LI>

0850     <LI>Fixed potential thread-safety issue in <TT>GetCubicVolume()</TT> and

0851         <TT>GetSurfaceArea()</TT> on Boolean solids in case those functions

0852         are called from worker threads.</LI>

0853     <LI>Removed declared but not implemented method in G4ScaledSolid.</LI>

0854     </UL></LI>

0855 <LI><B>Solids (CSG)</B>

0856     <UL>

0857     <LI>G4Box: code restructuring in <TT>DistanceToOut()</TT> methods.

0858         Optimised normal calculation in <TT>DistanceToOut()</TT>.</LI>

0859     <LI>G4Orb: provide faster algorithm in <TT>GetPointOnSurface()</TT>.</LI>

0860     <LI>G4Para: speedup calculation of surface area in <TT>GetSurfaceArea()</TT>

0861         and <TT>GetPointOnSurface()</TT>.</LI>

0862     <LI>G4Box, G4Para, G4Trd: code optimization in <TT>GetPointOnSurface()</TT>.</LI>

0863     <LI>G4Torus: implemented uniform sampling of random points on surface.</LI>

0864     <LI>Fixed potential thread-safety issue in <TT>GetCubicVolume()</TT> and

0865         <TT>GetSurfaceArea()</TT> on all solids in case those functions

0866         are called from worker threads.</LI>

0867     </UL></LI>

0868 <LI><B>Solids (Specific)</B>

0869     <UL>

0870     <LI>G4Ellipsoid, G4EllipticalTube: code optimization in

0871         <TT>GetPointOnSurface()</TT>.</LI>

0872     <LI>G4TessellatedSolid, G4TriangularFacet, G4QuadrangularFacet: use

0873         <TT>G4QuickRand()</TT> for generating points on surface.</LI>

0874     <LI>G4EllipticalCone: code optimization in <TT>GetPointOnSurface()</TT>;

0875         moved setters implementations to source.</LI>

0876     <LI>G4GenericTrap: improved estimation of safety distance by adopting

0877         Lipschitz-based implementation.</LI>

0878     <LI>G4Paraboloid: implemented uniform sampling of random points on surface.</LI>

0879     <LI>G4Hype: revised surface area calculation and random point sampling.

0880         Code optimization in <TT>GetPointOnSurface()</TT>.

0881         Changed static protected functions to private methods.</LI>

0882     <LI>Use <TT>G4QuickRand()</TT> in G4PolyPhiFace, G4PolyconeSide,

0883         G4PolyhedraSide, G4TwistedTubs, G4VCSGfaceted and G4VTwistedFaceted

0884         for sampling points on surface.</LI>

0885     <LI>Fixed potential thread-safety issue in <TT>GetCubicVolume()</TT> and

0886         <TT>GetSurfaceArea()</TT> on all solids in case those functions

0887         are called from worker threads.</LI>

0888     <LI>G4EllipticalCone, G4EllipticalTube, G4Voxelizer: removed unnecessary

0889         headers.</LI>

0890     <LI>Removed virtual specifications from utility class G4ClippablePolygon.</LI>

0891     <LI>Removed unneeded static data/specifications in G4Voxelizer.</LI>

0892     <LI>Moved inline methods definitions of G4TriangularFacet, G4QuadrangularFacet,

0893         G4SurfBits, G4TwistBoxSide, G4TwistTrapParallelSide and G4TwistTrapAlphaSide

0894         to .icc files.</LI>

0895     </UL></LI>

0896 <LI><B>Volumes</B>

0897     <UL>

0898     <LI>Fix to delete the logical skin/border surfaces only if the geometry

0899         is not closed.</LI>

0900     <LI>Moved default destructor definitions to headers.</LI>

0901     <LI>Minor code formatting in headers.</LI>

0902     </UL></LI>

0903 </UL>

0904

0905 <A NAME="glob-notes">

0906 <H3><I>Global</I></H3></A>

0907 <UL>

0908 <LI>G4VSIntegration: added new utility class for integration of probability

0909     density function and dynamically sampling of final state. This is useful

0910     for the case when sampling tables cannot be prepared and stored; instead

0911     computations are performed for each case individually.</LI>

0912 <LI>Added new class G4ExtendedPhysicsVector, a new data structure, which

0913     includes partial cross-sections and methods for random selection of a

0914     partial cross-section channel. The total cross-section is included via

0915     pointer to G4PhysicsVector.</LI>

0916 <LI>G4PhysicsVector, G4PhysicsFreeVector: added a new method <TT>CheckIndex()</TT>

0917     to reduce code duplication; removed tabs from source and headers, extended

0918     comments.</LI>

0919 <LI>Added new class G4FunctionSolver, a new utility to solve equation F(x)=0.</LI>

0920 <LI>G4PhysicsModelCatalog: introduced FTF quasi-elastic and FTF diffraction.

0921     Added model Ids and names for G4QuasiCherenkov and G4QuasiScintillation

0922     processes. </LI>

0923 <LI>Factored common ieee754 union and helper functions out of G4Log and

0924     G4Exp to remove code duplication.</LI>

0925 <LI>G4QuickRand: Added a possibility to set a seed.</LI>

0926 <LI>Fixed data race on std::cout in G4iosFinalization.</LI>

0927 <LI>Updated date of release for 11.4.</LI>

0928 </UL>

0929

0930 <A NAME="greps-notes">

0931 <H3><I>Graphical Representations</I></H3></A>

0932 <UL>

0933 <LI>Re-instated transparency slider in GUI.</LI>

0934 <LI>G4VGraphicsScene: added <TT>fMaxGeometryDepth</TT> data member and

0935     corresponding access functions.</LI>

0936 <LI>In G4Visible, fixed reported Coverity defects in copy constructor and

0937     assignment operator.</LI>

0938 <LI>In G4Att* classes, fixed link to description of HepRep data communication

0939     format (used by G4Atts).</LI>

0940 </UL>

0941

0942 <A NAME="had-notes">

0943 <H3><I>Hadronic Processes</I></H3></A>

0944 <UL>

0945 <LI><B>Cross Sections</B>

0946     <UL>

0947     <LI>G4NeutronInelasticXS, G4ParticleInelasticXS: added download data for

0948         all elements in class constructor, avoiding lazy initialisation at

0949         run-time. No locks are set any longer by these cross-section classes.

0950         For simple applications, the initialisation CPU time increases by

0951         roughly 10%; no effect on complex applications.</LI>

0952     <LI>In G4NeutronInelasticXS, G4NeutronElasticXS and G4NeutronCaptureXS,

0953         split data tables on two parts, low-energy for neutron resonance region

0954         and high energy above this region. This allows to increase accuracy of

0955         neutron cross-sections for non-HP (for example, HEP) applications.

0956         Added extra flag to enable/disable reading and usage of precise data

0957         in resonance region, allowing to reduce RSS memory for simple

0958         applications. For applications requiring higher precision of neutron

0959         transport, the flag should be defined via

0960         <TT>G4HadronicParameters::SetUseRFilesForXS(true)</TT>.</LI>

0961     <LI>G4ChargeExchangeXS: fixed selection of reaction for compound materials;

0962         added extra public and private methods; added extra method for sampling

0963         of scattering angle; updated parameterisation using new fit to data.

0964         Added extra method <TT>SampleTforPion()</TT>, which is based

0965         on the V. Lyubovitsky parameterisation for different reaction

0966         channels.</LI>

0967     <LI>Fixed minor memory leaks in classes G4CrossSectionFactory,

0968         G4CrossSectionFactoryRegistry, G4CrossSectionFactory,

0969         G4ElectroNuclearCrossSection and G4ChipsAntiBaryonElasticXS.</LI>

0970     <LI>G4EMDissociationCrossSection: fixed several technical inaccuracies

0971         in the code, addressing reported Coverity defects and to correctly

0972         use G4Pow.</LI>

0973     <LI>G4ParticleInelasticXS: fixed reported Coverity defect.</LI>

0974     <LI>In G4EMDissociationSpectrum, added protection against beta=0, to fix

0975         reported Coverity defect; correctly use G4Pow.</LI>

0976     <LI>Fixed compilation warning on Intel/icx compiler for overlapping

0977         comparison on condition in G4EMDissociationCrossSection.</LI>

0978     </UL></LI>

0979 <LI><B>Management</B>

0980     <UL>

0981     <LI>G4VHighEnergyGenerator: introduced Boolean methods to know whether the

0982         high-energy hadronic inelastic interaction is quasi-elastic or

0983         diffractive. Note that this can be used for both FTF and QGS hadronic

0984         string models.</LI>

0985     <LI>G4HadronicProcess: removed warning for the case when K0 and anti-K0

0986         are transformed into K0S or K0L. Removed misleading exception.

0987         Addressing problem report

0988         <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2675">#2675</A>.</LI>

0989     </UL></LI>

0990 <LI><B>Stopping</B>

0991     <UL>

0992     <LI>G4HadronicAbsorptionINCLXX: the energy max is different for anti-proton

0993         and anti-neutron in INCLXX.</LI>

0994     </UL></LI>

0995 <LI><B>Utilities</B>

0996     <UL>

0997     <LI>G4HadronicParameters: implemented pretty-print to ostream to allow

0998         users to check values at runtime, a-la G4EmParameters (request from

0999         ATLAS). Added extra flag to enable/disable usage of precise

1000         cross-section data for neutrons in resonance energy region.</LI>

1001     <LI>G4IsotopeList: added data on energy interval of neutron resonance

1002         regions per element for Z=1-92.</LI>

1003     </UL></LI>

1004 <LI><B>Abla</B>

1005     <UL>

1006     <LI>Added a new description for fission barriers based on

1007         PRC 111, 064606 (2025).</LI>

1008     </UL></LI>

1009 <LI><B>Bertini Cascade</B>

1010     <UL>

1011     <LI>Fixed compilation warning on Intel/icx compiler for overlapping

1012         comparison on condition in G4BigBanger, fixes typo in the computation

1013         of probability.</LI>

1014     </UL></LI>

1015 <LI><B>De-excitation</B>

1016     <UL>

1017     <LI>Added G4FermiBreakUpAN, new alternative FermiBreakUp model and support

1018         classes, contributed by A. Novikov (Yandex and MIPT) through

1019         <A HREF="https://github.com/Geant4/geant4/pull/84">GitHub PR#84</A>.

1020         The model is based on: J.P. Bondorf et al., Physics Reports,

1021         257(3):133-221.</LI>

1022     <LI>G4FermiBreakUpVI: removed the limit on excitation energy from the

1023         condition of the model applicability, the model become similar to

1024         G4FermiBreakUpAN in this respect.</LI>

1025     <LI>G4ExcitationHandler: moved multi-fragmentation model to be called before

1026         the pre-compound model and not inside G4ExcitationHandler. Interfaces

1027         are preserved. Added deprecation warnings to obsolete methods.</LI>

1028     <LI>G4ExcitationHandler, G4DeexPrecoParameters: updated initialisation

1029         to allow switching between different FermiBreakUp models.</LI>

1030     <LI>G4DeexPrecoUtility: new class, providing common computation, to avoid

1031         code duplication. Use it in classes G4EvaporationProbability,

1032         G4ProtonEvaporationProbability, G4DeuteronEvaporationProbability,

1033         G4TritonEvaporationProbability, G4He3EvaporationProbability and

1034         G4AlphaEvaporationProbability, simplifying code.</LI>

1035     <LI>G4DeexPrecoParameters: added extra enumerator to choose variants of

1036         the pre-compound model. Defined limits maxZ=9, maxA=17 instead of

1037         maxZ=3 maxA=5. Fermi BreakUp models will be used for light fragment

1038         de-excitation, which happens in high energy ion collision with light

1039         targets. Reduced upper limit of energy per nucleon for the

1040         pre-compound model from 30 to 15 MeV, according to the prescription

1041         of Botvina A. S. et al. Nucl. Phys. A, 475:663, 1987.</LI>

1042     <LI>G4NucLevel, G4PhotonEvaporation: use explicit type conversion from

1043         double to float; use const arguments where possible.</LI>

1044     <LI>G4VEmissionProbability, G4EvaporationProbability, G4GEMProbabilityVI:

1045         updated algorithms of integration of probabilities and sampling of

1046         kinetic energy for emitted fragment. Expected more accurate spectra.</LI>

1047     <LI>G4GEMChannelVI, G4EvaporationGEMFactoryVI, G4DeexPrecoParameters: new

1048         GEM de-excitation model with 83 decay channels.</LI>

1049     <LI>In G4GEMChannelVI, use G4DeexPrecoUtils.</LI>

1050     <LI>G4VEmissionProbability: use the new utility class G4VSIntegration,

1051         to simplify code; not affecting results.</LI>

1052         Updated parameters of integration of the probability density function.</LI>

1053     <LI>G4VEmissionProbability, G4EvaporationChannel, G4GEMChannelVI: use

1054         optimised parameters for G4VSIntegrator; initial step <TT>0.15 MeV</TT>

1055         for neutrons, <TT>0.2 MeV</TT> for charged, tolerance from 1.05 to 1.25.

1056         Avoid precision loss for computation of minimal energy of emitted

1057         fragment.</LI>

1058     <LI>In G4PhotonEvaporation, G4VEmissionProbability, check life time of

1059         final excitation level; special treatment for the ground state and the

1060         next level. Addressing problem report

1061         <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2660">#2660</A>.</LI>

1062     <LI>In G4EvaporationProbability, fixed computation of inverse cross-section.</LI>

1063     <LI>G4StatMF: always return non-empty vector of final fragments, if

1064         multi-fragmentation is not possible, then it returns the primary

1065         fragment. Cleaned up method of final state energy correction and

1066         Lorentz boost.</LI>

1067     <LI>G4StatMFMicroCanonical: replaced use of hard-coded solver with

1068         G4FunctionSolver. Fixed surface energy computation and removed

1069         unnecessary computations.</LI>

1070     <LI>Multifragmentation models are now using G4FunctionSolver instead of

1071         G4Solver.</LI>

1072     <LI>G4CoulombBarrier, G4DeexPrecoUtils, G4EvaporationFragment,

1073         G4EvaporationProbability and G4EvaporationGEMFactoryVI, use the default

1074         evaporation for neutrons, protons and light ions.</LI>

1075     <LI>Emit fatal exception in G4LevelReader if path to G4LEVELGAMMADATA

1076         is empty.</LI>

1077     <LI>G4LevelReader, G4GammaTransition, G4photonEvaporation: addressing

1078         problem reports

1079         <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2672">#2672</A>,

1080         <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2588">#2588</A>

1081         and

1082         <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2451">#2451</A>.

1083         The vector of IC probabilities is limited by number of levels in an

1084         atom; if in gamma level data all IC transitions are zero, then instead

1085         of K-shell probability, 1.0 is assigned to the last existing level;

1086         electron emission is sampled if nuclear excitation is above the bound

1087         level and if number of electrons on electron shell is above 1;

1088         more accurate sampling of final state using masses of the nucleus plus

1089         masses of electrons from electron shells.</LI>

1090     <LI>G4StatMFMicroCanonical: fixed computation of temperature.</LI>

1091     <LI>G4StatMFMicroPartition: code cleanup, removed non-informative printout,

1092         which can be repeated many times; instead stop MF model and return to

1093         de-excitation handler.</LI>

1094     <LI>General clean-up of the multifragmentation model: fixed equation solver;

1095         made uniform headers and source; reduced number of new/delete operations.</LI>

1096     <LI>Fixed reported Coverity defects.</LI>

1097     <LI>G4CoulombBarrier: some code cleanup.</LI>

1098     <LI>G4Evaporation: improved debug printout.</LI>

1099     </UL></LI>

1100 <LI><B>Elastic scattering</B>

1101     <UL>

1102     <LI>G4ChargeExchange: fixed problem in kinematic computations, allowed

1103         recoil nucleus to be in an excited state. Fixed issue in final state

1104         generation for the case of unstable meson production <TT>omega(782)</TT>

1105         and <TT>f2(1270)</TT>. Implemented angular distribution of pion charge

1106         exchange according to the V.Lubovitsky parameterisation for different

1107         reaction channels.</LI>

1108     <LI>G4ChargeExchange, G4HadronElastic: cleanup final state generation; use

1109         the numerical limit for argument of the exponent to avoid precision

1110         loss; in case of numerical problems force scattering angle to zero (do

1111         not consider scattering backwards); use similar parameterisation and

1112         code for both models. Fixed reported Coverity defect.</LI>

1113     <LI>Fixed cases of non-accurate checks on potential numerical problems in

1114         computing scattering angles in G4NuclNuclDiffuseElastic,

1115         G4DiffuseElastic and G4AntiNuclElastic, addressing compilation warnings

1116         on Intel/icx compiler for overlapping comparison on conditions.</LI>

1117     </UL></LI>

1118 <LI><B>EM Dissociation</B>

1119     <UL>

1120     <LI>G4EMDissociation: fixed reported Coverity defects.</LI>

1121     </UL></LI>

1122 <LI><B>High Energy Theoretical</B>

1123     <UL>

1124     <LI>G4TheoFSGenerator: introduced the ID model identification for FTF

1125         inelastic hadronic interactions that are classified as quasi-elastic

1126         or diffractive. Note that this classification is not available for

1127         the QGS string model.</LI>

1128     </UL></LI>

1129 <LI><B>INCLXX</B>

1130     <UL>

1131     <LI>Extension of the INCLXX model to handle anti-neutron (at rest and

1132         in-flight).</LI>

1133     <LI>Fixed the use of INCL for the reactions anti-neutron + H1/H2 and decay

1134         omega/eta.</LI>

1135     <LI>Fixed reported Coverity defect for use of <TT>std::move()</TT>

1136         in G4INCLCascade.</LI>

1137     <LI>Fixed URL to Root in comments. Fixes

1138         <A HREF="https://github.com/Geant4/geant4/pull/87">GitHub PR#87</A>.</LI>

1139     </UL></LI>

1140 <LI><B>Lend</B>

1141     <UL>

1142     <LI>Major update of GIDIplus interface with refactored C++ code, including

1143         use of official GNDS formatted data.</LI>

1144     <LI>Added feature for high-fidelity gamma cascades following reactions such

1145         as neutron capture and inelastic scattering.</LI>

1146     <LI>Collect all inelastic models (neutron and gamma induced) into

1147         G4HadronPhysicsLEND. Updated and simplified Shielding and

1148         G4EmExtraPhysics accordingly.</LI>

1149     <LI>Fix in G4EmExtraPhysics for failing in loading photonuclear from LEND

1150         if G4GammaGeneralProcess existed.</LI>

1151     <LI>Fix in G4LENDCombinedModel photofission; check energy function was not

1152         connected to the base class, resulting in a crash.</LI>

1153     <LI>Removed the default evaluation string from G4LEND. This change means the

1154         user only needs to update the G4LENDDATA environment variable to switch

1155         to a different nuclear data library.</LI>

1156     <LI>Fixed various Coverity reported defects and implicit conversion

1157         compilation warnings in macOS/XCode.</LI>

1158     </UL></LI>

1159 <LI><B>Nudex</B>

1160     <UL>

1161     <LI>Address maybe-unitialized warnings when building/linking with LTO,

1162         identified by ATLAS.</LI>

1163     </UL></LI>

1164 <LI><B>Particle High Precision</B>

1165     <UL>

1166     <LI>G4ParticleHPThermalScatteringData: attempt to fix reported Coverity

1167         defect on wrong handling of map iterator. Substituted several calls to

1168         G4HadronicExceptions by one G4Exception inside <TT>BuildPhysicsTable()</TT>

1169         method, which provides a fatal exception if a particle is not a neutron.

1170         Simplified <TT>IsApplicable()</TT> methods called at each step; the

1171         directory path is taken from G4ParticleHPManager to reduce number of

1172         calls to <TT>getenv()</TT> function; initialisation is performed only

1173         once in one instance of the class; initialised data structures are saved

1174         to G4ParticleHPManager and are accessed from all threads and instances;

1175         end of job destruction is also performed only once; removed commented

1176         lines and extended comments to code.</LI>

1177     <LI>In G4ParticleHPInelastic, fixed AllHP physics for initialisation of

1178         neutrons and light ions. Addressing problem report

1179         <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2591">#2591</A>.</LI>

1180     <LI>G4ParticleHPThermalScattering, G4ParticleHPThermalScatteringData,

1181         G4ParticleHPJENDLHEData: fixed reported Coverity defects for

1182         unprotected access to maps.</LI>

1183     <LI>Fixed reported Coverity defects, mainly in handling of maps and finding

1184         of isotopes.</LI>

1185     </UL></LI>

1186 <LI><B>Parton-String</B>

1187     <UL>

1188     <LI>G4FTFModel, G4DiffractiveExcitation: introduced classification of

1189         quasi-elastic and diffractive interactions among the inelastic

1190         interactions of the FTF string model. In the G4FTFModel class,

1191         the Boolean flags <TT>fIsQuasiElasticInteraction</TT> and

1192         <TT>fIsDiffractiveInteraction</TT> - inherited from the base class

1193         G4VHighEnergyGenerator - are used in the methods <TT>Init()</TT>

1194         and <TT>ExciteParticipants()</TT>. In the class G4DiffractiveExcitation,

1195         an extra, Boolean parameter is added to the method

1196         <TT>ExciteParticipants()</TT> to tag diffractive interactions.</LI>.

1197     </UL></LI>

1198 <LI><B>Pre-equilibrium</B>

1199     <UL>

1200     <LI>New classes G4PreCompoundInterface, G4PreCompoundTransitionInt and

1201         G4PreCompoundEmissionInt with alternative precompound model.</LI>

1202     <LI>G4PreCompoundModel, G4PreCompoundTransition, G4PreCompoundEmission:

1203         added an option to use alternative precompound models, which may be

1204         done via configuration without change of interface to consumer code;

1205         introduced verbose flag and extended printout needed to debug; removed

1206         old commented printout lines.</LI>

1207     <LI>G4PreCompoundModel: multi-fragmentation model is moved from the

1208         G4ExcitationHandler to be called before this pre-compound model for very

1209         hot fragments. Default excitation energy limit is very high, as it was

1210         in the case of G4ExcitationHandler. Increased limit of the pre-compound

1211         loop from 100 to 300 to suppress rare warnings seen in validation

1212         benchmarks. Send to evaporation all fragments with excitation

1213         energy exceeding energy limit.</LI>

1214     <LI>G4PreCompoundFragment, G4PreCompoundNucleon, G4PreCompoundIon: updated

1215         computation of inverse cross-section; added factor to cross-section.</LI>

1216     <LI>G4VPreCompoundFragment, G4PreCompoundFragment, G4HETCFragment: use the

1217         new utility class G4VSIntegration, to simplify code; not affecting

1218         results.</LI>

1219     <LI>G4VPreCompoundFragment: optimised initial step of integrator from

1220         <TT>1 MeV</TT> to <TT>0.5 MeV</TT>; increased tolerance from 1.05

1221         to 1.1.</LI>

1222     <LI>G4PreCompoundFragment, G4PreCompoundProton, G4PreCompoundDeuteron,

1223         G4PreCompoundTriton, G4PreCompoundHe3, G4PreCompoundAlpha: use new

1224         utility class G4DeexPrecoUtility.</LI>

1225     </UL></LI>

1226 <LI><B>QMD</B>

1227     <UL>

1228     <LI>G4QMDReaction and G4LightIonQMDReaction: added random rotation of the

1229         momentum around the z-axis to solve the directional bias of the momentum

1230         of the secondary particles.</LI>

1231     <LI>Fixed reported Coverity defect for potential division by zero.</LI>

1232     </UL></LI>

1233 <LI><B>Quasi Elastic</B>

1234     <UL>

1235     <LI>Fixed compilation warning on Intel/icx compiler for overlapping

1236         comparison on condition in G4QuasiElRatios.</LI>

1237     </UL></LI>

1238 </UL>

1239

1240 <A NAME="interc-notes">

1241 <H3><I>Intercoms</I></H3></A>

1242 <UL>

1243 <LI>In G4UImanager and G4UIcontrolMessenger, introducing <TT>@@</TT> keyword that

1244     can be placed in any UI command taking a macro file name. It creates a

1245     temporary macro file with defined commands until the

1246     <TT>/control/endRecord</TT> command is specified. The <TT>@@</TT> mechanism

1247     works recursively. If a file name is enclosed in a pair of <TT>@</TT>, that

1248     macro file is created. The mechanism works for both interactive mode and

1249     batch mode. When used in interactive mode with Qt GUI, one can use up-arrow,

1250     tab-key and clickable menu in left-side bar to complete a command.</LI>

1251 </UL>

1252

1253 <A NAME="interf-notes">

1254 <H3><I>Interfaces</I></H3></A>

1255 <UL>

1256 <LI>G4UIQt: re-instated transparency slider.

1257     Introduced Time Window tab. This exploits generic time windowing

1258     recently introduced in visualisation. Currently, it doesn't work with
1259     OGL in Qt6. The TSG visualisation driver works fine with both Qt5 and
1260     Qt6, except line width is not implemented.
1261     Simplified and improved touchable dump, using QScrollArea instead of
1262     QMessage. Improved pick info window size.
1263     Added icon to reset camera and improved base size of MainWindow.
1264     In scene tree, simplified interaction for visibility of touchables.
1265     Intercept the case of "help" with argument; write guidance to output
1266     window; avoid undiagnosed crash with Qt6.
1267     Fixed link and add "Action" guidance table in "Useful tips".
1268     Added methods to update the control widgets; moved transparency
1269     slider radio buttons to be class members; added icon for point cloud surface
1270     style; added icon to reset target point; changed behavior of the icon "Reset

1271     camera" to avoid popup window with dedicated call back; improved picking
1272     behavior avoiding opening picking window when picking is enabled; fixed
1273     icons selection behaviour and syncronisation.</LI>
1274 <LI>In G4VInteractiveSession, added <TT>UpdateDrawingStyle()</TT>,
1275     <TT>UpdateProjectionStyle()</TT> and <TT>UpdateTransparencySlider()</TT>
1276     virtual methods to update the control widgets.</LI>
1277 <LI>In CMake script, handle -DTOOLS_USE_GL_VERSION_3_2 in case of
1278     GEANT4_USE_VTK.</LI>
1279 <LI>General code tidy.</LI>
1280 </UL>
1281
1282 <A NAME="materials-notes">
1283 <H3><I>Materials</I></H3></A>
1284 <UL>
1285 <LI>Fixed several typos in crystallographic formulae: corrected orthorhombic
1286     interplanar angle cosine formula; corrected cubic interplanar angle cosine
1287     formula; corrected orthorhombic branch of GetRecIntSp2() function; corrected
1288     triclinic cell volume formula.</LI>
1289 <LI>Fixed initialisation problem in G4ICRU90StoppingData.
1290     Addressing problem report
1291     <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2663">#2663</A>.
1292 <LI>In G4AtomicFormFactor, corrected k conversion and <TT>4*pi</TT> factor.</LI>
1293 <LI>Fixed s computation in Cromer-Mann form to:
1294     <TT>s = (k * 1e-7) / (4*pi) (k in mm^-1)</TT>.</LI>
1295 <LI>G4ElementData, G4ElementDataRegistry: code cleanup and added extra method.</LI>
1296 </UL>
1297
1298 <A NAME="parameterisations-notes">
1299 <H3><I>Parameterisations</I></H3></A>
1300 <UL>
1301 <LI>Channeling:
1302     <UL>
1303     <LI>Introduced reading from an input file of custom internal geometry of
1304         a periodically bent crystal which also works, if necessary, with multiple
1305         input files, each per logical volume of an oriented crystal.</LI>
1306     <LI>Introduced various types of radiation virtual collimators in
1307         G4BaierKatkov.</LI>
1308     <LI>Deleted redundant code setting up the defaults of angular and low
1309         energy cuts in G4ChannelingFastSimModel.</LI>
1310     <LI>Polishing of the code according to guidelines.</LI>
1311     </UL></LI>
1312 </UL>
1313
1314 <A NAME="part-notes">
1315 <H3><I>Particles</I></H3></A>
1316 <UL>
1317 <LI>Updated particle properties to PDG-2025. Scanned all mesons and baryons,
1318     including their resonances; updated mass, decay width, and lifetime for the
1319     following particles: mesons - G4AntiBsMesonZero, G4BsMesonZero, G4Etac,
1320     G4Eta, G4JPsi, G4Upsilon; baryons - G4AntiSigmabMinus, G4AntiSigmabPlus,
1321     G4LambdacPlus, G4OmegacZero, G4XicZero; resonances - G4ExcitedSigmaConstructor,
1322     G4ExcitedLambdaConstructor, G4ExcitedNucleonConstructor,
1323     G4ExcitedMesonConstructor, mesons and baryons implemented in
1324     G4ShortLivedConstructor.</LI>
1325 <LI>Added new class G4QuasiOpticalPhoton, a non-physical particle definition
1326     designed to encapsulate the conditions for generating a burst of optical
1327     photons in processes such as scintillation or Cerenkov radiation.</LI>
1328 </UL>
1329
1330 <A NAME="pers-notes">
1331 <H3><I>Persistency</I></H3></A>
1332 <UL>
1333 <LI>GDML:
1334     <UL>
1335     <LI>Fix to pre-pend <TT>0x</TT> string before the address when writing
1336         entities on Windows platform. Addressing problem report
1337         <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2322">#2322</A>.</LI>
1338     </UL></LI>
1339 </UL>
1340
1341 <A NAME="lst-notes">
1342 <H3><I>Physics lists</I></H3></A>
1343 <UL>
1344 <LI><B>Builders</B>:
1345     <UL>
1346     <LI>In G4HadronPHPBuilder, G4ParticleHPCapture and G4ParticleHPCaptureData
1347         are replaced by G4NeutronRadCaptureHP and G4NeutronHPCaptureData,
1348         respectively.
1349         The first allows the use of the full list of updated PhotonEvaporation
1350         data set, while for the second it is only a change of the name, the
1351         data are the same. Addressing problem report
1352         <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2660">#2660</A>.</LI>
1353     <LI>G4HadronicBuilder: added the possibility to use anti-neutron by INCLXX.</LI>
1354     <LI>Code cleanup in G4AntiBarionBuilder and G4VAntiBarionBuilder.</LI>
1355     </UL></LI>
1356 <LI><B>Constructors</B>:
1357     <UL>
1358     <LI><U>electromagnetic</U>:
1359         <UL>
1360         <LI>G4OpticalPhoton: added G4QuasiOpticalPhoton to support offloading of
1361             optical photon generation.</LI>
1362         <LI>In G4OpticalPhysics, instantiate a process only if it is activated;
1363             added option to instantiate the new G4GeneralCerenkov process.</LI>
1364         <LI>G4GeneralGammaProcess: updated destructor according to modification
1365             in electromagnetic/utils.</LI>
1366         <LI>Updated G4EmStandardPhysicsGS according to the changes in the GS
1367             multiple scattering model, the standard GS EM constructor is
1368             expected to optionally provide accurate e-/e+ simulations now
1369             (similar accuracy as in Livermove, Penelope and option 4).</LI>
1370         <LI>G4EmDNABuilder: use G4DNABornIonisationModel1 for proton ionisation.
1371             For Opt8 configuration, use the same configuration of models for e-
1372             and protons as in Opt2. Restored usage of Born model of ionisation
1373             in the energy interval <TT>0.5 - 100 MeV</TT>. Use Rudd extended
1374             model for light ions in all physics configurations instead of old
1375             Rudd model, which should improve CPU performance; increased
1376             low-energy limit to <TT>11 eV</TT> for the CPA100 elastic scattering
1377             model. Use upper energy limits from G4EmParameters.</LI>
1378         <LI>In all DNA constructors the upper limit for DNA models for ions is
1379             set to <TT>300 MeV</TT> instead of <TT>400 MeV</TT>; for
1380             increase/decrease processes it is set to <TT>100 MeV</TT>; for
1381             ionisation of hydrogen it is set to <TT>100 MeV</TT>.</LI>
1382         <LI>G4EmDNAPhysics_option4, G4EmDNAPhysics_option6,
1383             G4EmDNAPhysics_option8: use fast option for a significant speedup
1384             of physics.</LI>
1385         <LI>G4EmDNAPhysics_stationary_X constructors: added deprecation warning,
1386             indicating that these constructors are now obsolete.</LI>
1387         <LI>G4EmDNABuilder, G4EmDNAPhysicsActivator: introduced usage of the
1388             new ion ionisation model in DNA Opt8 physics configuration.</LI>
1389         <LI>G4EmDNAPhysics, G4EmDNAPhysics_option2, G4EmDNAPhysics_option4,
1390             G4EmDNAPhysics_option6, G4EmDNAPhysics_option8: updated interface to
1391             G4EmDNABuilder.</LI>
1392         </UL></LI>
1393     <LI><U>gamma_lepto_nuclear</U>:
1394         <UL>
1395         <LI>G4EmExtraPhysics: removed LEND photo-nuclear; it is now selected by
1396             G4HadronPhysicsLEND.</LI>
1397         </UL></LI>
1398     <LI><U>hadron_elastic</U>:
1399         <UL>
1400         <LI>In G4ChargeExchangePhysics, fixed usage of the messenger.</LI>
1401         </UL></LI>
1402     <LI><U>hadron_inelastic</U>:
1403         <UL>
1404         <LI>G4Hadron_PhysicsQGS_BIC, G4Hadron_PhysicsQGSP_BIC_HP and
1405             G4Hadron_PhysicsQGSP_BIC_AllHP: uniform instantiation of neutron
1406             and proton physics; enable NuDEX via hadronic parameters for
1407             neutron capture in QGSP_BIC_HP and QGSP_BIC_AllHP; code cleanup.</LI>
1408         <LI>G4HadronicPhysicsQGSP_BIC_HP and G4HadronicPhysicsQGSP_BIC_AllHP
1409             inherits from G4HadronicPhysicsQGSP_BIC. The size of the classes
1410             have been significantly reduced due to the removal of duplicated
1411             code.</LI>
1412         <LI>In G4HadronPhysicsQGS_BIC, do not use QGS/Binary and FTF/Binary
1413             models for pions and kaons.</LI>
1414         <LI>G4HadronPhysicsShielding: technical clean-up: removed unused
1415             headers, fixed constructors and destructors.</LI>
1416         <LI>In G4HadrocPhysicsQBBC, disabled General Neutron Process.
1417             Addressing problem reports
1418             <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2558">#2558</A>
1419             and
1420             <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2559">#2559</A>.</LI>
1421         <LI>Added G4HadronPhysicsLEND to define neutron and photon induced
1422             processes from LEND.</LI>
1423         <LI>G4HadronPhysicsShielding: removed LEND neutron process, now selected
1424             by G4HadronPhysicsLEND.</LI>
1425         <LI>G4HadronPhysicsQGSP_BERT_HP: minor code cleanup.</LI>
1426         </UL></LI>
1427     </UL></LI>
1428 <LI><B>Lists</B>:
1429     <UL>
1430     <LI>G4PhysListFactory: prevent fallback to default physics list when an
1431         invalid name is provided. Now, if a user specifies an unknown physics
1432         list, Geant4 will throw a fatal error instead of silently using
1433         FTFP_BERT. This ensures that users are aware of incorrect configurations
1434         and helps preventing unintended simulation results.
1435         Allowed definition of the EM standard physics Opt0 on top of any
1436         reference Physics List (which provides a simpler EM physics treatment);
1437         improved printout for the HP case, and now the EMZ option is printed out
1438         in the name.</LI>
1439     <LI>In QBBC physics list, added G4ChargeExchangePhysics.</LI>
1440     <LI>In Shielding physics list, simplified the handling of inelastic models
1441         and moved all LEND hadronic inelastic processes to G4HadronPhysicsLEND.</LI>
1442     </UL></LI>
1443 </UL>
1444
1445 <A NAME="run-notes">
1446 <H3><I>Run</I></H3></A>
1447 <UL>
1448 <LI>Enabled worker threads to receive next sub-event before completing the
1449     current sub-event in G4WorkerSubEvtRunManager. Some code cleanup.</LI>
1450 <LI>Fix in <TT>G4RunManager::ReinitializeGeometry()</TT>; the logical
1451     skin/border surfaces (used for optical physics) contain pointers to
1452     logical/physical volumes that are deleted when the geometry is reset.
1453     Resetting the geometry will now also clear these surface tables.</LI>
1454 <LI>Introducing UI commands to limit number of warning messages to be
1455     printed out.</LI>
1456 <LI>Added some verbose level checks to G4TaskRunManager and G4SubEvtRunManager
1457     to reduce printouts.</LI>
1458 <LI>In G4PhysicsListHelper, changed ordering of processes: for X-Ray production
1459     use ordering parameter 100 for post step instead of 1000; fixed ordering
1460     for muon capture at rest.</LI>
1461 <LI>G4VModularPhysicsList: deleted confusing printout if the same physics type
1462     is substituted.</LI>
1463 <LI>In G4AdjointPrimaryGeneratorAction, removed pointer attribute on
1464     G4AdjointPrimaryGenerator and call it by the static <TT>GetInstance()</TT>
1465     method to fix a bug in Reverse MC simulation in MT mode.</LI>
1466 </UL>
1467
1468 <A NAME="track-notes">
1469 <H3><I>Track &amp; Tracking</I></H3></A>
1470 <UL>
1471 <LI>G4VTrajectory and G4VTrajectoryPoint: added caching of G4AttValues.
1472     <TT>GetAttValues()</TT> returns a <TT>shared_ptr</TT> that points to the
1473     object created by <TT>CreateAttValues()</TT> if not already created.
1474     Thus acts as a cache. Protected copy and move constructors and copy and
1475     move assignment operators.</LI>
1476 <LI>G4RichTrajectoryPoint: added accessors for Pre/PostStepPointGlobalTime.
1477     This allows fast access for time windowing feature of trajectory modeling.</LI>
1478 </UL>
1479
1480 <A NAME="vis-notes">
1481 <H3><I>Visualization</I></H3></A>
1482 <UL>
1483 <LI><B>General</B>
1484     <UL>
1485     <LI>Make the TSG driver the "flagship" visualization driver.
1486         In G4VisExecutive, make nickname/alias OGL synonymous with TSG and make
1487         TSG the default for selection by build flags.</LI>
1488     <LI>Removed HepRepFile and Qt3D visualisation drivers, no longer viable to
1489         develop and maintain.</LI>
1490     </UL></LI>
1491 <LI><B>Management</B>
1492     <UL>
1493     <LI>Re-instated the transparency slider; re-implemented it in a generic way,
1494         i.e., for all drivers; uses a new UI command:
1495         <TT>/vis/viewer/set/transparencyByDepth</TT>.
1496         G4UIQt issues this command on signals from the slider. The user may,
1497         of course, use this command directly.</LI>
1498     <LI>Split scene processing into its "permanent" (run-duration models) and
1499         "transient" (end-of-event and end-of-run models) parts.
1500         This allows to update just the transient part, e.g., trajectories,
1501         which we might want to display in a different way, leaving the
1502         permanent part (e.g., detector) unchanged, avoiding unnecessary
1503         re-processing. This is exactly the situation for time windowing - the
1504         detector does not change, the trajectories also actually do not change,
1505         just the way they are drawn changes.</LI>
1506     <LI>G4VSceneHandler: introduced <TT>ProcessTransients()</TT> virtual function.
1507         Moved pertinent code from <TT>ProcessScene()</TT> to
1508         <TT>ProcessTransients()</TT>.
1509         Copied time parameters into modeling parameters.
1510         Calculate and maintain <TT>fMaxGeometryDepth</TT>, new base class data
1511         member. Enforce the new marker policy in <TT>GetMarkerSize()</TT>.
1512         Improved some diagnostic printing.</LI>
1513     <LI>G4VViewer: introduced <TT>ProcessTransients()</TT> method.
1514         Follow changes in G4PhysicalVolumeModel.
1515         Initialise <TT>fTransientsNeedRedrawing</TT> to <TT>false</TT>.
1516         Previously, this was initialised <TT>true</TT>, but it is up to the
1517         viewer to decide if transients (trajectories) need redrawing.
1518         Added <TT>ZoomFromMouseWheel()</TT> function to control mouse wheel
1519         behavior; added virtual methods to get window size, render area size and
1520         scene near width; implemented ZoomToCursor algorithm to zoom toward the
1521         mouse cursor. General optimization of zoom behavior with mouse wheel.
1522         Added Shift key modifier to change zoom mode in perspective projection
1523         from Dolly (default) to zoomFactor. Changed Shift key modifier behavior
1524         to enable ZoomToCursor while pressed.
1525         Added <TT>UpdateGUIControlWidgets()</TT>, <TT>UpdateGUIDrawingStyle()</TT>,
1526         <TT>UpdateGUIProjectionStyle()</TT> and <TT>UpdateGUITransparencySlider()</TT>
1527         methods to update the GUI control widgets. Code tidy.</LI>
1528     <LI>Added RayTracerQt in G4VisExecutive. Introduced nickname/alias TSGZB
1529         for appropriate driver by priority.
1530         In Vtk, removed patch as now ToolsSG-GLES builds with OpenGL-3.2.
1531         Vtk and ToolsSG-GLES can now cowork at run time.</LI>
1532     <LI>G4VVisCommand: in <TT>InterpolateViews()</TT>, implemented desired time
1533         per time step. Computation time per step may cause this to increase.</LI>
1534     <LI>G4VisCommandsViewer: improved guidance of <TT>/vis/viewer/interpolate</TT>
1535         command. In <TT>/vis/viewer/set/timeWindow/displayHeadTime</TT>,
1536         implemented "current as default". There might be some minor change of
1537         behaviour.
1538         In <TT>/vis/viewer/select</TT>, removed subsequent refresh, even for
1539         auto-refresh drivers. Refresh is not required after a select, window
1540         systems keep the image. Added <TT>UpdateGUIControlWidgets()</TT> to
1541         <TT>G4VisCommandViewerSelect::SetNewValue()</TT> to update the control
1542         widget when the viewer is changed.</LI>
1543     <LI>In G4VisCommandsTouchable, disabled <TT>/vis/touchable/centre...</TT> and
1544         <TT>/twinkle</TT> in the case of large process times.</LI>
1545     <LI>Added UI command <TT>/vis/scene/add/endOfRunMacro</TT>.
1546         The macro is executed at end of run and when rebuild required.
1547         WARNING: some vis commands in the macro cause recursion. Stick to
1548         simple commmands, e.g., which invoke vis manager <TT>Draw()</TT>
1549         methods.</LI>
1550     <LI>G4VisCommands: always print available drivers when using
1551         <TT>/vis/list</TT>.</LI>
1552     <LI>G4ViewParameters: added <TT>TransparencyByDepth</TT> and
1553         <TT>TransparencyByDepthOption</TT>. Simplified code; use single
1554         TimeParameters from G4ModelingParameters, to replace 18 time window
1555         parameters. Added <TT>zoomToCursor</TT> parameter to control the zoom
1556         behavior of the mouse wheel. Added data members and methods to handle
1557         dots. Changed <TT>GetZoomToCursor()</TT> to <TT>IsZoomToCursor()</TT>
1558         to follow convention for Boolean parameters.
1559         Fixed typo to make <TT>/vis/viewer/set/lightsMove cam</TT> behaving
1560         correctly for <TT>/vis/viewer/set/lightsVector 0 0 1</TT>.
1561         Addressing problem report
1562         <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2460">#2460</A>.</LI>
1563     <LI>G4VisCommandsViewerSet: updated to <TT>/vis/viewer/set/timeWindow</TT>
1564         commands according to changes in G4ViewParameters.
1565         Added UI command <TT>/vis/viewer/set/transparencyByDepth</TT>.
1566         Added command <TT>/vis/viewer/set/zoomToCursor</TT> to set
1567         the <TT>zoomToCursor</TT> parameter. Improved guidance for
1568         <TT>vis/viewer/set/dotsSmooth</TT> "Smooth" typically means rounded,
1569         i.e., dots drawn as filled circles. The vis system is configured by
1570         default to draw smooth dots. This may be switched off with
1571         <TT>/vis/viewer/set/dotsSmooth false</TT> and typically this will
1572         result in square dots.
1573         Added <TT>/vis/viewer/set/dotsSize and dotsSmooth</TT> commands.
1574         G4PolyMarkers have a MarkerType that can be dots, circles, or
1575         squares.</LI>
1576     <LI>Minor improvement to listing of histograms (if any).
1577     <LI>G4VisManager: in <TT>EndOfRun()</TT>, print list of histograms even
1578         with vis disabled. In <TT>EndDraw()</TT> and <TT>EndDraw2D()</TT>,
1579         refresh view at end of drawing.
1580         Smooth dots are now default at end-of-run drawing.</LI>
1581     <LI>Modernised macro-based loops with range-based for.</LI>
1582     <LI>Replaced raw for loops with range-for where possible.</LI>
1583     <LI>Removed all references to HepRepFile and Qt3D.</LI>
1584     </UL></LI>
1585 <LI><B>Modeling</B>
1586     <UL>
1587     <LI>G4TrajectoryDrawerUtils: first version of generic time windowing of
1588         trajectory slices; draws only slices within the viewer time window.
1589         Note: unless the viewer can handled time-sliced trajectories (only
1590         OGLS can do this at present), the viewer must request a kernel visit
1591         on change of viewer time window.
1592         Trap trajectories with very long global times, e.g, products of
1593         long-lived radioactive isotopes. Draw as non-time-sliced trajectories.
1594         Added fading of trajectory slices if time windowing is active; makes
1595         trajectory slices look like little meteors streaking across the screen.
1596         Applied clang-format.</LI>
1597     <LI>G4ModelingParameters: implemented <TT>TimeParameters::operator!=()</TT>.
1598         Adjusted default values in TimeParameters: set fade factor to 1
1599         (maximum fading); set head time display 2D x-coordinate to zero
1600         (centre), while 2D y-coordinate remains at -0.9 (bottom).
1601         Added struct <TT>TimeParameters</TT>, a prerequisite for "Generic

1602         Time-Slicing" for the display of the time evolution of events.
1603         With that feature, the display of tracks moving through time will be
1604         available to all vis drivers (drivers will still be allowed to
1605         implement their own time evolution).</LI>
1606     <LI>G4TrajectoriesModel: in <TT>DescribeYourselfTo()</TT>, draw display
1607         head time if requested and if time windowing is active; removed
1608         Begin/EndDraw around the trajectories loop.</LI>
1609     <LI>In G4TrajectoryDrawByEncounteredVolume and
1610         G4TrajectoryEncounteredVolumeFilter, use <TT>G4VTrajectory::GetAttValues()</TT>
1611         instead of <TT>CreateAttValues()</TT>, to speedup repeated visits.</LI>
1612     <LI>G4VModel: introduced static data member for current modeling parameters
1613         and its static accessor, <TT>GetCurrentModelingParameters()</TT>.</LI>
1614     <LI>In G4PhysicalVolumeModel, fixed typo in ModelType.</LI>
1615     <LI>G4TrajectoriesModel: call <TT>SetCurrentModelingParameters()</TT>.</LI>
1616     <LI>G4ModelingParameters: added <TT>TransparencyByDepth</TT> and
1617         <TT>TransparencyByDepthOption</TT>.</LI>
1618     <LI>G4PhysicalVolumeModel: renamed some data members and access functions
1619         for clarity; added <TT>fMaxFullDepth</TT> (includes base path, i.e.,
1620         from world volume); added code for processing transparency by depth.</LI>
1621     </UL></LI>
1622 <LI><B>OpenGL</B>
1623     <UL>
1624     <LI>G4OpenGLQtViewer: fixed the original pick feature to show pick info
1625         window. Implemented new virtual methods of G4VViewer,
1626         <TT>GetWindowSize()</TT> and <TT>GetRenderAreaSize()</TT>; modified
1627         <TT>wheel_rotate()</TT> function to call <TT>ZoomFromMouseWheel()</TT>
1628         of G4VViewer; updated <TT>moveScene()</TT> method to work correctly in
1629         perspective mode with dolly zoom.
1630         Commented calls to TouchableSetVisibility/Colour;
1631         no longer needed since the introduction of the new scene tree.
1632         Commented out some debug printing to <TT>std::cout</TT>.
1633         Improved context menu behavior for picking; added condition to avoid
1634         picking with rigth mouse button.</LI>
1635     <LI>G4OpenGLWin32Viewer: added <TT>SwitchToMasterThread()</TT> method to draw
1636         trajectories at the end of run in MT mode. Implemented new virtual
1637         methods of G4VViewer, <TT>GetWindowSize()</TT> and
1638         <TT>GetRenderAreaSize()</TT>; modified <TT>SetZoom()</TT> function to
1639         call <TT>ZoomFromMouseWheel()</TT> of G4VViewer.</LI>
1640     <LI>G4OpenGLStoredViewer, G4OpenGLStoredQtViewer: initiate kernel visit if
1641         <TT>TransparencyByDepth</TT> or its options change.</LI>
1642     <LI>In G4OpenGLStoredViewer, follow changes introduced in G4ViewParameters.</LI>
1643     <LI>Implemented policy for dotsSize and dotsSmooth.</LI>
1644     </UL></LI>
1645 <LI><B>OpenInventor</B>
1646     <UL>
1647     <LI>G4OpenInventorViewer: initiate kernel visit if <TT>TransparencyByDepth</TT>
1648         or its options change. In <TT>CompareForKernelVisit()</TT>, cause kernel
1649         visit if viewer start/end time changes; this is to take advantage of the
1650         new generic time window. Implemented <TT>CompareForTransientsRedraw()</TT>.
1651         Take advantage of <TT>ProcessTransients()</TT>, which reconstructs that
1652         part of the graphical database for transient objects, e.g., trajectories,
1653         without reconstructing the "permanent" (run-duration) objects, e.g.,
1654         the detector. In other words, something short of a complete "kernel

1655         visit". For example, if the time window changes. Maximises the
1656         efficiency of the recently implemented "generic" time windowing.</LI>
1657     <LI>Implemented policy for dotsSize and dotsSmooth.</LI>
1658     </UL></LI>
1659 <LI><B>RayTracer</B>
1660     <UL>
1661     <LI>Introducing RayTracerQt. Uses multithreading tracer, G4TheMTRayTracer.
1662         With multithreading, image construction is quite fast.</LI>
1663     <LI>Introduced nicknames (long names still work): RT (for RayTracer),
1664         RTX (for RayTracerX), RTQt (for RayTracerQt).</LI>
1665     <LI>In G4RayTracerViewer, use G4Timer to estimate
1666         KernelVisitElapsedTimeSeconds.</LI>
1667     <LI>In G4VRTScanner (and inherited classes), removed misleading and un-used
1668         methods <TT>GetGSName()</TT> and <TT>GetGSNickName()</TT>.</LI>
1669     </UL></LI>
1670 <LI><B>ToolsSG</B>
1671     <UL>
1672     <LI>Upgraded driver to work with OpenGL-3.2 and cowork with Vtk.</LI>
1673     <LI>Allow accumulation of transients (trajectories) during multithreading.</LI>
1674     <LI>Trajectories are stored in the database during the run, and displayed
1675         at end of run. All events are displayed at end of run.</LI>
1676     <LI>In G4ToolsSGViewer, initiate kernel visit if <TT>TransparencyByDepth</TT>
1677         or its options change. In <TT>CompareForKernelVisit()</TT>, cause kernel
1678         visit if viewer start/end time changes; this is to take advantage of the
1679         new generic time window. Implemented <TT>CompareForTransientsRedraw()</TT>.
1680         Removed <TT>SwitchToVisSubThread</TT> and <TT>SwitchToMasterThread</TT>
1681         as no action is needed on thread switching.
1682         In <TT>mouse_move()</TT>, use the <TT>event.shift_modifier()</TT> method,
1683         to pass in pan mode. Have <TT>GetWindowSize()</TT> and
1684         <TT>GetRenderAreaSize()</TT> methods to retrieve the actual sizes of the
1685         "seen/visible window" and of the "render area" size; these may return
1686         different sizes, for example with Qt/OpenGL on macOS and Windows.
1687         In <TT>SetView()</TT>, use the new <TT>GetWindowSize()</TT>,
1688         <TT>GetRenderAreaSize()</TT> methods to set the "marker scale" on
1689         G4ToolsSGSceneHandler.
1690         Modified <TT>wheel_rotate()</TT> function to call
1691         <TT>ZoomFromMouseWheel()</TT> of G4VViewer; added method
1692         <TT>GetSceneNearWidth()</TT>.
1693         In <TT>CreateSG()</TT>, for 3D scenes, have a <TT>tools::sg::shade_model</TT>
1694         node set to "smooth" so TSG_GLES have the same rendering as in OGLI/OGLS.
1695        Issuing Gouraud shading on surfaces by default.</LI>
1696     <LI>G4ToolsSGQtGLESViewer, G4ToolsSGQtZBViewer, G4ToolsSGOffscreenViewer:
1697         suppressed <TT>SetView()</TT> method, as no more needed.</LI>
1698     <LI>In G4ToolsSGSceneHandler, respect line width in vis attributes and view
1699         parameters. In <TT>GetOrCreateNode()</TT>, removed restriction on
1700         multithreading. Handle the <TT>fMarkerScale</TT> field.</LI>
1701     <LI>Implemented policy for dotsSize and dotsSmooth.</LI>
1702     <LI>Modernised macro-based loops with range-based for statements.</LI>
1703     </UL></LI>
1704 <LI><B>Vtk</B>
1705     <UL>
1706     <LI>In <TT>G4VtkSceneHandler::ClearStore()</TT>, fix to clear both stores.</LI>
1707     </UL></LI>
1708 </UL>
1709
1710 <A NAME="data-notes">
1711 <H3><I>Data sets</I></H3></A>
1712 <UL>
1713 <LI>Updated photon evaporation data set version, <B>G4PhotonEvaporation-6.1.2</B>:
1714     <UL>
1715     <LI>Correction to files z94.a239 (addressing problem report
1716     <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2682">#2682</A>),
1717     z91.a234 (addressing problem report
1718     <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2170">#2170</A>),
1719     z5.a11 (addressing problem report
1720     <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2577">#2577</A>)
1721     and z75.a187 (addressing problem report
1722     <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2685">#2685</A>).</LI>
1723     </UL></LI>
1724 <LI>Updated low energy electromagnetic data set version, <B>G4EMLOW-8.8</B>:
1725     <UL>
1726     <LI>Updated MicroElec data: added new files and updated format of other
1727         files.</LI>
1728     <LI>Extension of ELSEPA elastic cross-section files for electrons in water
1729         up to <TT>10 MeV</TT>.</LI>
1730     </UL></LI>
1731 <LI>Updated version of data set for neutron energies, <B>G4PARTICLEXS-4.2</B>:
1732     <UL>
1733     <LI>Added data for elements and isotopes for neutrons in the resonance
1734         region, which are using more detailed energy scale and better reproduce
1735         resonance structure.</LI>
1736     </UL></LI>
1737 <LI>Updated data set for proton and neutron density profiles,
1738     <B>G4INCL-1.3</B>:
1739     <UL>
1740     <LI>New data files for in-flight antiprotons (Channel probabilities)
1741         <TT>inflight*FS*.dat</TT>.</LI>
1742     </UL></LI>
1743 <LI>Updated data set for the simulation of channeling trajectories,
1744     <B>G4CHANNELING-2.0</B>:
1745     <UL>
1746     <LI>Updated <TT>Si-axis-100.dat</TT> file after revision of the algorithm
1747         and increasing the accuracy.</LI>
1748     <LI>Added files for: Si, Ge and Diamond.</LI>
1749     </UL></LI>
1750 </UL></LI>
1751
1752 <A NAME="ex-notes">
1753 <H3><I>Examples</I></H3></A>
1754 <UL>
1755 <LI>Updated reference outputs, macros, READMEs and scripts.</LI>
1756 <LI>Migraded READMEs to Markdown format.</LI>
1757 <LI>Fixes for Doxygen documentation and coding guidelines.</LI>
1758 <LI>Updated examples macros for removal of HepRep[File] vis drivers.</LI>
1759 <LI><B><U>advanced</U></B>
1760     <UL>
1761     <LI><B>CaTS</B>
1762         <UL>
1763         <LI>RootIO, EventAction: Moved hit collections from EventAction to
1764             RootIO and improved code readability.</LI>
1765         <LI>In DetectorConstruction, introduced map of sensitive detectors
1766             with names and refactored code for adding detectors.</LI>
1767         <LI>lArTPCSD, readPhotonHits: updated for renaming from Photondetector
1768             to PhotonDetector and revised NumElectrons.</LI>
1769         </UL></LI>
1770     <LI><B>dna/cellularPhantom</B>
1771         <UL>
1772         <LI>Code reorganisation; introduced Run class.</LI>
1773         <LI>Simplified analysis of results.</LI>
1774         <LI>Updated affiliation.</LI>
1775         </UL></LI>
1776     <LI><B>dna/moleculardna</B>:
1777         <UL>
1778         <LI>Updated new implementation of IRT-syn model.</LI>
1779         <LI>Corrected segmentation error with Root macrofiles, caused when low
1780             damage had been produced.</LI>
1781         <LI>Updated reaction list for DNA reactions.</LI>
1782         <LI>Define missing variable in some macros.</LI>
1783         <LI>Increased default statistics in <TT>ecoli.mac</TT>.</LI>
1784         <LI>Fixed cell geometry in <TT>human_cell_chromosomes.mac</TT>.</LI>
1785         <LI>Added moleculardna macro, Root macro and geometry files for the
1786             simulation of phages.</LI>
1787         <LI>Commented out system calls in all Root analysis macros.</LI>
1788         <LI>Updated direct damage range for plasmid.mac and <TT>cylinders.mac</TT>.</LI>
1789         <LI>Added <TT>fiber.mac</TT> macro.</LI>
1790         <LI>Increased max number of arguments in main().</LI>
1791         <LI>Added protection to all analysis macros to avoid <TT>nan</TT> in error
1792             calculation.</LI>
1793         <LI>Added possibility to activate parallel world using dedicated flag from
1794             executable.</LI>
1795         <LI>Added <TT>/scheduler/verbose 0</TT> to all human* macros.</LI>
1796         <LI>Fixed <TT>phase_space_test.mac</TT> macro.</LI>
1797         <LI>Merged the output files from different threads to a single file.</LI>
1798         <LI>Fixed memory leak in the PrimaryGeneratorAction for phase_space.</LI>
1799         <LI>Fixed the wrong gap: a gap (distance between 2 hits) can be 0
1800             Addressing problem report
1801             <A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2681">#2681</A>.</LI>
1802         <LI>Added protection for over counting damage.</LI>
1803         <LI>Fixed the printed info by Batmunkh.</LI>
1804         <LI>Updated analysis macros for statistical analysis of errors.</LI>
1805         <LI>Updated absorbed dose calculation in analysis macros to avoid
1806             double counting of energy deposition in DNA geometry, and inclusion
1807             of error on the dose.</LI>
1808         </UL></LI>
1809     <LI><B>eFLASH_radiotherapy</B>
1810         <UL>
1811         <LI>Added new class FlashMinibeamTemplate implementing the geometry of
1812             collimatiors for minibeam production, including the different
1813             geometrical configurations (grid and planar).
1814             Modified FlashDetectorConstruction accordigly.</LI>
1815         <LI>Added a macro file for minibeam production.</LI>
1816         </UL></LI>
1817     <LI><B>exp_microdosimetry</B>
1818         <UL>
1819         <LI>Added mini tissue equivalent proportional counter (mini TEPC) in
1820             DetectorConstruction.</LI>
1821         <LI>Added a new macro implementing a parallel monoenergetic
1822             <TT>100 MeV</TT> proton beam.</LI>
1823         </UL></LI>
1824     <LI><B>gammaknife</B>
1825         <UL>
1826         <LI>Fixed visualisation of geometry, which can be now drawn with
1827             <TT>/vis/drawVolume</TT>. Corrected positioning of boxmesh.
1828             Based on
1829             <A HREF="https://github.com/Geant4/geant4/pull/92">GitHub PR#92</A>.</LI>
1830         </UL></LI>
1831     <LI><B>IAEAphsp</B>
1832         <UL>
1833         <LI>New example demonstrating how to read and write IAEA phase-space
1834             (IAEAphsp) files within a minimal, configurable application. The
1835             IAEAphsp format is defined by the IAEA Nuclear Data Section; this
1836             example shows how to use IAEAphsp files as input source (i.e. as a
1837             primary generator) and how to produce IAEAphsp outputs at given
1838             scoring planes. Reference paper: M.A. Cortes-Giraldo et al.,
1839             Int J Radiat Biol 88(1-2): 200-208 (2012).</LI>
1840         </UL></LI>
1841     <LI><B>microbeam</B>
1842         <UL>
1843         <LI>Added n-tuple merging.</LI>
1844         </UL></LI>
1845     <LI><B>microelec_SEY</B>
1846         <UL>
1847         <LI>New example simulating the passage of incident electrons [10eV, 10keV]
1848             in a stack of 6 layers, where thicknesses and material nature can be user
1849             defined. The number of electrons re-emitted by the irradiated
1850             surface is counted by a spherical detector surrounding the whole
1851             geometry and providing the SEY rate in a csv file as a function
1852             of the incident energy.</LI>
1853         </UL></LI>
1854     </UL></LI>
1855 <LI><B><U>basic</U></B>
1856     <UL>
1857     <LI><B>B1</B>
1858         <UL>
1859         <LI>RunAction: modified printout to use the expression "Absorbed dose"
1860             Print Edep and mass of scoring volume.</LI>
1861         <LI>Increased statistics in <TT>exampleB1.in</TT>.</LI>
1862         </UL></LI>
1863     <LI><B>B3</B>
1864         <UL>
1865         <LI>Removed StackingAction class and using method
1866             <TT>SetDefaultClassification()</TT> from G4RunManager for
1867             killing neutrinos.</LI>
1868         </UL></LI>
1869     </UL></LI>
1870 <LI><B><U>extended</U></B>
1871     <UL>
1872     <LI><B>biasing</B>
1873         <UL>
1874         <LI><B>GB03</B>
1875             <UL>
1876             <LI>Instantiate G4GenericBiasingPhysics only if biasing is enabled.
1877                 Propagate biasing on/off to detector construction to initialise
1878                 biasing classes only if biasing is requested.</LI>
1879             <LI>Added histograms and counters for particles penetrating the
1880                 shield volume.</LI>
1881             <LI>Replaced GB03DetectorMessenger with GenericMessenger.</LI>
1882             </UL></LI>
1883         <LI><B>GB05</B>
1884             <UL>
1885             <LI>Removed explicit call of base class constructor in DetectorConstruction.</LI>
1886             </UL></LI>
1887         <LI><B>GB07</B>
1888             <UL>
1889             <LI>Removed explicit call of base class constructor in DetectorConstruction.</LI>
1890             </UL></LI>
1891         <LI><B>ReverseMC01</B>
1892             <UL>
1893             <LI>Migrated to work in MT mode.</LI>
1894             </UL></LI>
1895         </UL></LI>
1896     <LI><B>common</B>
1897         <UL>
1898         <LI>New directory providing a set of classes independent on each other
1899             which can be reused in "feature" examples or users applications,
1900             demonstrating just a particular feature.</LI>
1901         </UL></LI>
1902     <LI><B>electromagnetic</B>
1903         <UL>
1904         <LI><B>TestEm0</B>
1905             <UL>
1906             <LI>RunAction: introduced <TT>G4endl</TT> in several places to
1907                 easy debugging.</LI>
1908             </UL></LI>
1909         <LI><B>TestEm2</B>
1910             <UL>
1911             <LI>Fixed memory leak at exit in ActionInitialisation, DetectorConstruction
1912                 and RunAction. Instantiate the field messenger differently.</LI>
1913             </UL></LI>
1914         <LI><B>TestEm4</B>
1915             <UL>
1916             <LI>Added G4RayleighScattering in PhysicsList.</LI>
1917             </UL></LI>
1918         <LI><B>TestEm5</B>
1919             <UL>
1920             <LI>TrackingAction: fixed reflect condition for negative X beam.</LI>
1921             </UL></LI>
1922         <LI><B>TestEm7</B>
1923             <UL>
1924             <LI>DetectorConstruction: fixed <TT>SetWorldMaterial()</TT> to
1925                 correctly act on the world logical volume, rather than the
1926                 absorber.</LI>
1927             </UL></LI>
1928         <LI><B>TestEm13</B>
1929             <UL>
1930             <LI>Added G4RayleighScattering in PhysicsList.</LI>
1931             </UL></LI>
1932         <LI><B>TestEm14</B>
1933             <UL>
1934             <LI>Added G4RayleighScattering in PhysicsList.</LI>
1935             </UL></LI>
1936         <LI><B>TestEm15</B>
1937             <UL>
1938             <LI>Updated <TT>gamma.mac</TT> input macro to use emstandard_opt4.</LI>
1939             <LI>Removed <TT>gamma2mumu.mac</TT> input macro.</LI>
1940             </UL></LI>
1941         <LI><B>TestEm18</B>
1942             <UL>
1943             <LI>Added G4RayleighScattering in PhysicsList.</LI>
1944             </UL></LI>
1945         </UL></LI>
1946     <LI><B>eventgenerator</B>
1947         <UL>
1948         <LI><B>exgps</B>
1949             <UL>
1950             <LI>In HistoManager, activated n-tuple merging.</LI>
1951             <LI>Fixed python and analysis macros (tested with python 3.13.3).</LI>
1952             <LI>Moved <TT>plotHisto.C</TT> to macros.
1953                 Removed <TT>plottest35.py</TT> and <TT>plotit.csh</TT>.</LI>
1954             <LI>Excluded not working tests (needed further investigation).</LI>
1955             <LI>Removed <TT>exgps_batch.in</TT> (identical with <TT>exgps.in</TT>).</LI>
1956             <LI>Copy all macros and run script into the build area in CMake
1957                 script.</LI>
1958             </UL></LI>
1959         <LI><B>pythia/decayer6</B>
1960             <UL>
1961             <LI>Removed <TT>common</TT> subdirectory and copied only classes
1962                 used in this example.</LI>
1963             </UL></LI>
1964         <LI><B>pythia/py8decayer</B>
1965             <UL>
1966             <LI>Updated to Pythia-8.3.15.</LI>
1967             </UL></LI>
1968         </UL></LI>
1969     <LI><B>exoticphysics</B>
1970         <UL>
1971         <LI><B>channeling</B>
1972             <UL>
1973             <LI><B>ch2</B>
1974                 <UL>
1975                 <LI>New macros dedicated to specific applications.</LI>
1976                 <LI>Extended output at the detector.</LI>
1977                 <LI>Added scoring of radiation spectrum from the Baier-Katkov
1978                     method; introduced virtual collimator.</LI>
1979                 <LI>Updated python analysis tools, no change in simulation
1980                     code. Added a jupyter notebook version of a python script.</LI>
1981                 </UL></LI>
1982             <LI><B>ch5</B>
1983                 <UL>
1984                 <LI>New example for simulating a positron source. Although the
1985                     conventional approach based on an **amorphous target** is
1986                     possible, the application is primarily designed to simulate
1987                     positron sources based on oriented crystals. In the latter
1988                     case, both the **single-crystal** and the **hybrid scheme**
1989                     can be investigated.</LI>
1990                 </UL></LI>
1991             </UL></LI>
1992         <LI><B>phonon</B>
1993             <UL>
1994             <LI>Updated build script for CTests definitions.</LI>
1995             </UL></LI>
1996         </UL></LI>
1997     <LI><B>g3tog4</B>
1998         <UL>
1999         <LI>Removed <TT>common</TT> subdirectory and copied only classes used
2000             in these examples.</LI>
2001         </UL></LI>
2002     <LI><B>hadronic</B>
2003         <UL>
2004         <LI>GammaNuclearPhysics: use G4GammaNuclearXS data set.</LI>
2005         <LI><B>NeutronSource</B>
2006             <UL>
2007             <LI>In <TT>main()</TT>, added <TT>SetUseNRESP71Model(true)</TT>.</LI>
2008             <LI>PhysicsList: removed temporary access to neutron capture model
2009                 based on model name; removed unnecesary commented lines.
2010                 Use local RadioactiveDecayPhysics instead of
2011                 G4RadioaciveDecayPhysics. Use G4EmStandardPhysics_option3
2012                 instead of opt4; added G4EmExtraPhysics as an alternative to
2013                 GammaNuclearPhysics; use G4HadronElasticPhysicsXS instead of HP.</LI>
2014             </UL></LI>
2015         </UL></LI>
2016     <LI><B>medical/DICOM</B>
2017         <UL>
2018         <LI>Refactored DICOM examples into a single project; now build everything
2019             together for ease of use and demonstration. Code/behaviour otherwise
2020             is unchanged. Including two examples, DICOM1 (renamed from the original
2021             DICOM) and DICOM2, with two libraries that implement capabilities
2022             common to both applications: G4DicomCore, providing the core Geant4
2023             application structure; G4DicomReader, optional utility library to read
2024             DICOM files and RT structure in DICOM format, as well as RT plans.
2025             Both applications can optionally use the DICOM Digital Head. </LI>
2026         </UL></LI>
2027     <LI><B>medical/dna</B>
2028         <UL>
2029         <LI>Use 'default' for trival destructors.</LI>
2030         <LI><B>AuNP</B>:
2031             <UL>
2032             <LI>Added chemistry functionality.</LI>
2033             <LI>Code refactoring and cleanup.</LI>
2034             </UL></LI>
2035         <LI><B>chem4</B>:
2036             <UL>
2037             <LI>Replaced <TT>shared_ptr</TT> with <TT>unique_ptr</TT> and raw
2038                 for manager counters.</LI>
2039             </UL></LI>
2040         <LI><B>chem5</B>:
2041             <UL>
2042             <LI>Use the new G4MoleculeCounterManager to manage the
2043                 G4MoleculeCounter.</LI>
2044             <LI>Replaced <TT>shared_ptr</TT> with <TT>unique_ptr</TT> and raw
2045                 for manager counters.</LI>
2046             <LI>Code clean up; added plot.py script for plotting the output
2047                 data.</LI>
2048             </UL></LI>
2049         <LI><B>chem6</B>:
2050             <UL>
2051             <LI>Replaced <TT>shared_ptr</TT> with <TT>unique_ptr</TT> and raw
2052                 for manager counters.</LI>
2053             <LI>Added UI commands to select physics constructor and output
2054                 file name.</LI>
2055             <LI>Code Refactoring.</LI>
2056             </UL></LI>
2057         <LI><B>dnadamage1</B>:
2058             <UL>
2059             <LI>Replaced <TT>shared_ptr</TT> with <TT>unique_ptr</TT> and raw
2060                 for manager counters.</LI>
2061             <LI></LI>
2062             </UL></LI>
2063         <LI><B>dnadamage2</B>:
2064             <UL>
2065             <LI>Access DetectorConstruction via <TT>GetUserDetectorConstruction()</TT>
2066                 from G4RunManager.</LI>
2067             <LI>Delete run-manager as last in <TT>main()</TT>.</LI>
2068             </UL></LI>
2069         <LI><B>dnaphysics</B>:
2070             <UL>
2071             <LI>Added possibility to simulate radioactive nuclei;
2072                 added <TT>radioactive.in</TT> macro and <TT>plotRadioactive.C</TT>.</LI>
2073             <LI>Added <TT>elastic.in</TT> and <TT>plotElastic.C</TT> macros to show
2074                 distribution of scattering angles.</LI>
2075             <LI>Added UI command to record first step only;
2076                 updated <TT>elastic.in</TT> macro accordingly.</LI>
2077             <LI>Updated PhysicsList and SteppingAction.</LI>
2078             </UL></LI>
2079         <LI><B>mfp</B>:
2080             <UL>
2081             <LI>Added n-tuple merging.</LI>
2082             </UL></LI>
2083         <LI><B>microtrack</B>:
2084             <UL>
2085             <LI>New example implementing a geometry to calculate microdosimetry
2086                 quantities for ion tracks in liquid water at a given energy,
2087                 ensuring secondary electron equilibrium when needed. At each
2088                 event, a random track hit defines a spherical scoring site;
2089                 weighted sampling is then used to estimate energy imparted and
2090                 related quantities.</LI>
2091             </UL></LI>
2092         <LI><B>molcounters</B>:
2093             <UL>
2094             <LI>New example showing how to use the new molecule counter manager
2095                 system and how to write custom molecule counters. The custom
2096                 (spatially-aware) molecule counter used here is further
2097                 described in: Radiat. Phys. Chem. 212 (2023) 111194.</LI>
2098             </UL></LI>
2099         <LI><B>neuron</B>:
2100             <UL>
2101             <LI>Added UI commands to calculate water radiolysis products in
2102                 specific regions.</LI>
2103             <LI>Commented out the initialization in <TT>main()</TT> to allow
2104                 G4DNAPhysicsActivator to register DNA regions in the macro
2105                 input file.</LI>
2106             </UL></LI>
2107         <LI><B>phasespace</B>:
2108             <UL>
2109             <LI>New example showing how to simulate particle tracks in a cube
2110                 of liquid water containing a scoring sphere, placed in its
2111                 centre.</LI>
2112             </UL></LI>
2113         <LI><B>radial</B>:
2114             <UL>
2115             <LI>New example showing how to simulate radial dose profiles in
2116                 liquid water from incident ions using the Geant4-DNA physics
2117                 processes and models.</LI>
2118             </UL></LI>
2119         <LI><B>range</B>:
2120             <UL>
2121             <LI>Added beta option8 physics list.</LI>
2122             </UL></LI>
2123         <LI><B>scavenger</B>:
2124             <UL>
2125             <LI>Replaced <TT>shared_ptr</TT> with <TT>unique_ptr</TT> and raw
2126                 for manager counters.</LI>
2127             </UL></LI>
2128         <LI><B>slowing</B>:
2129             <UL>
2130             <LI>Added n-tuple merging.</LI>
2131             </UL></LI>
2132         <LI><B>spower</B>:
2133             <UL>
2134             <LI>Added scoring of secondary electrons.</LI>
2135             <LI>PhysicsList: added all DNA Physics Lists and usage of
2136                 G4EmParameters.</LI>
2137             <LI>In <TT>lot.C</TT>, added selection of electrons by default.</LI>
2138             <LI>In <TT>spower.in</TT>, changed physics constructors.
2139                 Added inactivation of nuclearStopping (for ions).</LI>
2140             </UL></LI>
2141         <LI><B>svalue</B>:
2142             <UL>
2143             <LI>Added n-tuple merging.</LI>
2144             <LI>Added missing optional include file in TrackingAction header.</LI>
2145             <LI>Added optional time threshold to iodine macros.</LI>
2146             </UL></LI>
2147         <LI><B>UHDR</B>:
2148             <UL>
2149             <LI>Updated pulseAction for larger pulse size.</LI>
2150             <LI>Temporarily use molecule counter for EventScheduler.</LI>
2151             <LI>Updated reaction table for scavengers.</LI>
2152             <LI>Use the new G4MoleculeCounterManager to manage the
2153                 G4MoleculeCounter.</LI>
2154             <LI>Added pulse structure and interpulse feature.</LI>
2155             <LI>Fixed partially diffused-control reactions.</LI>
2156             <LI>Fixed crash due to typo in <TT>UHDR.in</TT>.</LI>
2157             <LI>Removed dependence of PrimaryGeneratorAction/Physlist/ChemList
2158                 and ActionIni classes on DetectorConstruction class.</LI>
2159             <LI>Added protection against null pointer in <TT>plotG_time.C</TT>.</LI>
2160             <LI>Updated macro files.</LI>
2161             </UL></LI>
2162         </UL></LI>
2163     <LI><B>medical/radiobiology</B>
2164         <UL>
2165         <LI>Primary beam origin can be located outside the detector water tank.</LI>
2166         </UL></LI>
2167     <LI><B>parallel</B>
2168         <UL>
2169         <LI>Retired obsolete TBB example. Functionality fully provided by
2170             tasking run manager with TBB support with no user code changes
2171             required.</LI>
2172         <LI><B>MPI</B>
2173            <UL>
2174            <LI>Modernised and simplified library and example build scripts
2175                to build G4mpi library and examples of its use in one project.
2176            <LI>Moved MPI from deprecated C++ interface to C interface (MPI 3+).
2177                Based on:
2178                <A HREF="https://github.com/Geant4/geant4/pull/81">GitHub PR#81</A>.</LI>
2179            </UL></LI>
2180         </UL></LI>
2181     <LI><B>parameterisations</B>
2182         <UL>
2183         <LI><B>Par04</B>
2184            <UL>
2185            <LI>Introduction of the CaloDiT pre-trained model, offering greater
2186                accuracy.</LI>
2187            <LI>Updated VAE training with the new translation script and Condor
2188                scripts.</LI>
2189            <LI>Applied GitHub PRs from dependabot to update requirements.</LI>
2190            </UL></LI>
2191         </UL></LI>
2192     <LI><B>radioactivedecay</B>
2193         <UL>
2194         <LI><B>Activation</B>
2195             <UL>
2196             <LI>In <TT>main()</TT>, added <TT>SetUseNRESP71Model(true)</TT>.</LI>
2197             <LI>GammaNuclearPhysics: use G4GammaNuclearXS data set.</LI>
2198             </UL></LI>
2199         </UL></LI>
2200     <LI><B>runAndEvent</B>
2201         <UL>
2202         <LI><B>RE03</B>
2203            <UL>
2204            <LI>Temporarily protect against the use of parallel geometry
2205                initialization if running in sub-event parallel mode.</LI>
2206            </UL></LI>
2207     </UL>
2208 </UL>
2209
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