| MuonPropagator | MuonPropogator makes muons for ReactorEvent |
| MyBiSource | MyBiSource generates photons from radioactive Thallium decays |
| MyCfSource | MyCfSource generates prompt photons and delayed neutrons from radioactive Californium decays |
| MyHeSource | MyHeSource generates delayed neutrons from radioactive He decays |
| MyLiSource | MyLiSource generates delayed neutrons from radioactive Li decays |
| MyTlSource | MyTlSource generates photons from radioactive Thallium decays |
| ReactorConstants | ReactorConstants sets all of the physical constants, unit conversions, and detector parameters used throughout ReactorFsim |
| ReactorDetector | ReactorDetector handles the detector implementation in the ReactorFsim simulation |
| ReactorEvent | ReactorEvent handles all of the event generation in the ReactorFsim simulation |
| ReactorNtuple | ReactorNtuple creates and fills the ntuple for the ReactorFsim simulation |