Warning, /geant4/examples/extended/hadronic/ParticleFluence/Sphere/README is written in an unsupported language. File is not indexed.
0001 In this example, the particle fluence is evaluated for a very simple
0002 set-up, consisting of one target solid sphere, at the center of which
0003 a particle is shot (by default along the z-axis).
0004
0005 The particle fluence is computed in two places: "forward" and "backward",
0006 defined as the positions immediately after and before, respectively, of
0007 the target with respect to the direction of the primary particle.
0008
0009 The particle fluence is estimated by summing the track length in a
0010 "scoring volume" - i.e. a thin hemisphere shell filled up with G4_Galactic
0011 (very low density gas) material, immediately outside the target sphere -
0012 and then dividing for the cubic volume of such scoring volume.
0013
0014 Complementary information on average multiplicity, average kinetic energy,
0015 and average total energy flow (i.e. sum of kinetic energies) for the
0016 particles produced in the target are also computed.
0017
0018 The particle fluence is evaluated for the following 11 particle types:
0019 - all
0020 - electron + positron
0021 - gamma
0022 - muon- + muon+
0023 - neutrino (any flavour and including anti-neutrino)
0024 - charged pions
0025 - neutron + anti_neutron
0026 - proton + anti_proton
0027 - ion (and anti-ions)
0028 - otherMeson (e.g. kaons, etc.)
0029 - otherBaryon (e.g. hyperons, etc.)
0030
0031 The particle fluence is evaluated for the following 3 kinematical ranges:
0032 - any kinetic energy
0033 - kinetic energy < 20 MeV
0034 - kinetic energy > 20 MeV
0035
0036 Look for the string "***LOOKHERE***" for those parameters/options that
0037 are either hardwired in the code (i.e. not available via UI command),
0038 or default values of UI commands.
0039
0040 This example uses the physics list factory, therefore you can specify
0041 the reference physics list you want to use via the PHYSLIST
0042 environmental variable (by default, if you don't set it, the FTFP_BERT
0043 physics list is used).
0044
0045 To build this example:
0046
0047 mkdir Build; cd Build
0048 cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo \
0049 -DGeant4_DIR=/path-to-geant4-libraries ../.
0050 make
0051
0052 To run it:
0053
0054 ./Sphere all_together.in
0055
0056 which shoots 50 GeV pion- on different target materials, 100 events
0057 in each run, and print out some information on the particle fluence
0058 at the end of each run.
0059 Other macros exist for specific materials:
0060 cu.in, fe.in, graphite.in, lar.in, pb.in, pbwo4.in, polystyrene.in, si.in, w.in .
