disable all detectors other than Ge
for source/target modes, add a Y-rotation for a better performance in rejection sampling, not a general solution, the angle is specific to our geomtry and hardcoded in PrimaryGeneratorAction ...
Merge branch 'NT_ge_cal_finite_source': finite-size source for Ge calibration
Merge branch 'master' of github.com:alcap-org/g4sim
Merge branch 'master' of github.com:alcap-org/g4sim