dual-readout

Repository for GEANT4 simulation & analysis of the dual-readout calorimeter.

How-to

Compile

After fetching the repository, do

source setenv-cc7-gcc8.sh
mkdir build
cd build
cmake ..
make -j4

Install

For a case that needs to install the package (e.g. condor requires file transfer), one can install the package via

cmake -DCMAKE_INSTALL_PREFIX=<path_to_install_directory> ..
make -j4
make install

Note that to use the installed binary & library files, need to do following (assuming $PWD=<path_to_install_directory>)

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$HEPMC_DIR/lib64:$FASTJET_DIR/lib:$PYTHIA_DIR/lib:$PWD/lib

Running Pythia8

In build/Gen,

./P8ptcgun ptcgun.cmnd <seed> <filename>

generates <filename>_<seed>.root.

Running GEANT4

1. GEANT4 standalone particle gun

In build/DRsim,

./DRsim <run_macro> <filenumber> <filename>

generates, <filename>_<filenumber>.root

2. Using HepMC input

This requires the ROOT file generated from Gen. Assuming the name of the file <filename>_<filenumber>.root,

./DRsim run_hepmc.mac <filenumber> <filename>

Reconstruction

This requires the ROOT file generated from DRsim. Assuming the name of the file <filename>_<filenumber>.root, in build/Reco,

./Reco <filenumber> <filename>

Analysis

This requires the ROOT file generated from Reco. Assuming the name of the file <filename>_<filenumber>.root, in build/analysis,

./<your_analysis_program> <filenumber> <filename>

Precaution

Since GEANT4 takes very large amount of time per an event, P8ptcgun, DRsim and Reco are assumed to run a few events only per ROOT file. The executables can be run on parallel using torque or condor, and can be merged before analysis step using hadd from ROOT.