In the discussions of ParticleHP the possible beams list p,d,t,3He and 4He, but gammas are not listed as included. The TENDL data bases do include gamma induced reactions such as gamma,n. So does anyone know if the gamma data are really not included in this data file?
These databases only include interactions of hadronic particles. For gamma incident you have to use the G4PhotoNuclearProcess (see Physics Reference Manual).