Detectors and Mobile Racks

CXI has two in-vacuum 2.3M CSPAD pixel-array detectors.  Each detector can be stationed downstream of one of CXI's three interaction points and can be read-out individually, together, or independently – allowing CXI the capability to operate two experiments simultaneously using a single X-Ray beam.  When running two experiments during the same shift, the upstream experiment uses the DS1 CSPAD in the primary DAQ, while the downstream parasitic experiment will use the DS2 CSPAD in the secondary DAQ.  The names DS1 and DS2, refer to the vacuum chambers that contain the CSPADs as well as a handful of additional beamline components such as pulse pickers, beamstops, and alignment stages.  

(Pic of detector chambers)

Both DS1 and DS2 have companion mobile equipment racks, D50 and D51 respectively.  The racks are nearly identical and each contain power supplies and readout electronics for detectors, a Digi, a 4-channel stepper motor controller, an EPICS IOC server, and (whatever else).

(picture of a mobile rack and probably should make rack profiles)