Simple geant4-based Monte-Carlo program for a new particle physics experiment at SC-1000 (NRC KI - PNPI).

The experiment will consists of:

• Beam tracker based on Mulity-Wire Proportional Chambers with anode readout (MWPC 0-2);
• Time projection chamber (ACTAF-2 TPC);
• Large MWPC to track scattared protons and thus perform TPC calibration.

• See docs/figs/geometry.jpg
• Positions can be set in src/CSCConfig.hh

Three steps:

• Create envoirments
• Compile and run Geant4 application
• Analyse output

This project is tested with conda package solution.

First one have to setup and configure it:

cd ~/
wget http://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh
sh Miniconda3-latest-Linux-x86_64.sh
source ~/miniconda3/etc/profile.d/conda.sh
conda config --add channels conda-forge

Second, create Geant4 envoirment:

conda create --name g4-mc geant4 compilers cmake make
conda activate g4-mc

This enviorment have to be activated, when Geant4 program is compiling or is running.

Third, create CERN ROOT envoirment:

conda create --name pres-mc
conda activate pres-mc
conda install --yes --file docs/requirements.txt
conda activate pres-mc

During the analysis of MC-output-files you are expected to have pres-mc environment activated.

mkdir build
cd build
cmake -DGeant4_DIR=/home/adzyuba/miniconda3/envs/g4-mc/lib/Geant4-11.0.3/ ../
make
./exec_CSC run.mac

Edit run.mac to change number of generated protons.

Later one can use:

source Run_Geant.sh

As an output two files will be created:

• csc.data MWPC output (see src/CSCSteppingAction.cc)
• gen.data primary protons (see src/CSCPrimaryGeneratorAction.cc)

In build directory:

cp ../scripts/Reso.C ./
root -l Reso.C+