Calculate dE/dx lines using GEANT4

Originally arranged by Rensheng from a GEANT4 example

Configuration

• Beam is fixed to z direction.
• TPC volume: (1000, 530, 12) mm
• B-field: (0, 0.5, 0) T
• Max. step length in TPC: 0.5 mm

How to change settings

• TPC volume: bin/Linux-g++/Config/Geo_Size.config
• Batch mode: Line 4 of bin/Linux-g++/Config/Initial.config
• Number of events: Line 5 of bin/Linux-g++/Config/Initial.config

How to run

1. Load GEANT4 environmental variables.
2. Type source env.sh to set G4WORKDIR to the current directory.
3. Type make to compile.
4. Open bin/Linux-g++/ControlRun_MultiProcess.sh file with any text editor.
5. Change Lines 7-10. Note that lines 8-9 are only active when ParticleName is 2H, 3H, 3He or 4He.
6. If the particle you set is heavior than proton, make sure to set correct number of ParticleA and ParticleZ.
7. Change the number in line 17 depending on your CPU cores.
8. Save an exit the text editor.
9. Run bin/Linux-g++/ControlRun_MultiProcess.sh.