| Parameter Name | Units | Type | Default | Description |
| CENTRAL_ENERGY | double | 0.0 | desired central gamma | |
| CENTRAL_MOMENTUM | double | 0.0 | desired central beta*gamma | |
| MATCH_BEAMLINE | long | 0 |
if nonzero, beamline reference momentum is set to beam average momentum | |
| MATCH_PARTICLES | long | 0 |
if nonzero, beam average momentum is set to beamline reference momentum | |
| GROUP | string | NULL | Optionally used to assign an element to a group, with a user-defined name. Group names will appear in the parameter output file in the column ElementGroup |