testem2.cra is the geant3 equivalent of TestEm2 % cd geant3 % gmakeB to make an executable (Batch version) % gmakeT to make an executable (inTeractive version) To execute: % cd geant3 % $G4SYSTEM/testem2.xb (for batch) or testem2.xt (for interactive) The program will ask: G3 > gives the filename of the data cards to be read: run01.dat (runNN.dat is the equivalent of the G4 runNN.mac) testem2 produces several histo saved as testem2.paw if ISWIT(2)=1 Content of these histo: 1 : energy deposit per event 2 : charged track length per event 3 : neutral track length per event 4 : longitudinal energy profile 5 : cumulated longitudinal energy profile 6 : rms of cumulated longitudinal energy profile 7 : radial energy profile 8 : cumulated radial energy profile 9 : rms of cumulated radial energy profile 21 : edep distrib as function of kine energy of contributing particle 22 : cumulative distrib of 21 It is possible to set the max allowed step size STEMAX, via the data card: STEPMX stepmax (in cm) (However this value will be taken into account only if auto=0)