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The beamline

The XPD beam path, area by area. CORA models the beamline as one root Asset (XPD) with the devices nested below it; this page is the human walk, the Inventory is the flat reference.

XPD runs from a high-flux insertion-device source through a first-optics hutch into an experiment hutch where the high-energy beam meets a powder or capillary sample and the scattering pattern is recorded on a large flat panel. Two enclosures carry it (a downstream high-resolution endstation, 28-ID-D, is deferred):

  28-ID-A  (optics hutch / FOE)            28-ID-C  (experiment hutch)
  ----------------------------------       --------------------------------------
  source -> double-Laue mono -> VFM        pinhole -> sample -> flat panel
            slit -> filters                          (diffractometer)   (distance = Q)
  • Source (28-ID-A): the insertion-device source, then the optics, the bent double-Laue monochromator, the vertical focusing mirror, the white-beam slit, and the filters. This page is generated from the descriptor. A high-resolution monochromator in the 28-ID-C hutch feeds the high-resolution endstation, deferred with it (ENDSTATION-1).
  • Sample (28-ID-C): the diffractometer holding the sample and detector arm, the sample-array stage, the beam-defining pinhole, and the cryostream / furnace sample environment.
  • Detector (28-ID-C): the large flat-panel area detectors, the distance stage that sets the accessible Q, the flux counters, and the exposure shutter.
  • Controls: the software-triggered acquisition gated by the exposure shutter, and the motion controllers.

Each device binds a catalog Family and a verified EPICS PV (the insertion-device source has no PV in the public config); none binds a vendor Model (part numbers are not in the public config). The one loose family is the BeamPositionMonitor, shared with other deployments and held for gate-review.