| Parameter Name | Units | Type | Default | Description |
| X | double | 0.0 | rms scattering level for x | |
| XP | double | 0.0 | rms scattering level for x' | |
| Y | double | 0.0 | rms scattering level for y | |
| YP | double | 0.0 | rms scattering level for y' | |
| DP | double | 0.0 | rms scattering level for (p-pCentral)/pCentral | |
| PROBABILITY | double | 1 | Probability that any particle will be selected for scattering. |