Data items in the SOURCE category record details of the source of radiation.
_bsync_diffrn_source.beamline_id 1 _bsync_diffrn_source.beamline_name 's1' _bsync_diffrn_source.source 'rotating anode' _bsync_diffrn_source.type 'Rigaku RU-200' _bsync_diffrn_source.power '50 kw, 180 mA'