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0001 \page Examplech1 Example ch1
0002
0003 \author Alexei Sytov - INFN Ferrara Division (Italy) \n
0004 sytov@fe.infn.it
0005
0006 ## INTRODUCTION
0007 Example ch1 is an easy demonstration of the minimum requirements necessary
0008 to integrate the G4ChannelingFastSimModel and the G4BaierKatkov model into a project
0009 in order to simulate the physics of channeling and
0010 channeling radiation/coherent bremsstrahlung.
0011
0012 This example serves as a guideline for users on how to add this physics
0013 to their existing Geant4 projects. It includes the minimum necessary options
0014 to incorporate this physics. Specifically, it requires registering
0015 G4FastSimulationPhysics in the main routine and
0016 adding a few lines of code in DetectorConstruction.
0017
0018 ## DESCRIPTION
0019 The example is based on the following experiments on channeling [1] and
0020 channeling radiation [2] in a bent crystal, carried out at Mainz Mikrotron MAMI with
0021 855 MeV electrons. The experimental validation of G4ChannelingFastSimModel is
0022 described in [3].
0023
0024 This example includes a bent crystal and a detector positioned behind it.
0025 The incoming beam is set up in macro run.mac.
0026
0027 The example does not include any input of the model or geometry parameters
0028 from the macro to keep it as straightforward as possible. The output is recorded
0029 into the file results.root. It consists of
0030 the charged particle distribution at the detector in the x-plane
0031 (the plane of crystal bending and perpendicular to the crystal planes) as well as
0032 the spectrum of photons arriving to the detector. To build these plots, one has to
0033 open this file in root and use
0034 ```cpp
0035 x_out->Draw()
0036 ```
0037
0038 and
0039
0040 ```cpp
0041 Spectrum->Draw()
0042 ```
0043
0044 for the coordinates and the spectrum, respectively.
0045
0046 ## REFERENCES
0047
0048 -# A. Mazzolari et al. <a href="https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.112.135503">Phys. Rev. Lett. 112, 135503 (2014).</a>
0049 -# L. Bandiera et al. <a href="https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.115.025504">Phys. Rev. Lett. 115, 025504 (2015).</a>
0050 -# A. Sytov et al. <a href="https://link.springer.com/article/10.1007/s40042-023-00834-6"> Journal of the Korean Physical Society 83, 132–139 (2023).</a>
