# 2. Source File Format¶

Normally, source data is stored in a state point file. However, it is possible to request that the source be written separately, in which case the format used is that documented here.

/

Attributes: filetype (char[]) – String indicating the type of file. source_bank (Compound type) – Source bank information for each particle. The compound type has fields wgt, xyz, uvw, E, delayed_group, and particle, which represent the weight, position, direction, energy, energy group, delayed group, and type of the source particle, respectively.