Event Generators

An event generator simulates the interaction of the beam with the target material. Several types of event generators exist in PandaRoot:

• Background generators They generate the most important physics processes with the highest cross-sections:

  • FTFGenerator is the current standard background generator

  • DPMGenerator is the previous generator still usable within PandaRoot

• Event generators They generate one specific physics channel EvtGen.

• Box generators They do not simulate an interaction but produce particles of a given type with defined distributions. Therefore they are also often called particle guns.

  In PandaRoot two different box generators exists:

  • BoxGenerator is the standard particle gun which distributes the particles in a random pattern within given boundaries

  • FixStepParticleGun is almost identical to the Box generator but distributes the particles in a fixed pattern