Interaction Codes | |
Code | Description |
400000 | Photon lost (left tracking region) |
401000 | Photon discarded (CERFAC cut) |
402000 | Photon reached and fired PMT |
404000 | Photon absorbed (any media) |
405000 | Photon dropped (geometry traching error) |
Whenever a Cerenkov photon reaches the PMT boundary the vertex processor VXPMT is called to determine if a PMT hit has occurred. How the photon is handled depends on the PMT model:-