In many cases, HepSim detector simulations were done using SiD-derived software, such as those used for ILC, CLIC, etc. experiments. To perform such simulation, you will need to convert PROMC to SLCIO or STDHEP files.

You can convert ProMC data to STDHEP or LCIO (MCParticle) with full simulations using promc2stdhep or promc2lcio converters:

wget http://atlaswww.hep.anl.gov/hepsim/soft/promc_convert.tgz
tar -zvxf promc_convert.tgz
cd promc_convert
promc2lcio.sh input.promc output.slcio    # convert to SLCIO
promc2stdhep.sh input.promc output.stdhep # convert to STDHEP

— Sergei Chekanov 2017/04/12 21:58