The beamline¶

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

PDF runs from the shared 28-ID damping wiggler through a first-optics hutch into an endstation where a high-energy beam meets a powder or capillary sample and the total-scattering pattern is recorded on flat-panel and pixel detectors at two distances. Two enclosures carry it:

  28-ID-1-A  (optics hutch / FOE)           28-ID-1-B  (endstation)
  ----------------------------------        --------------------------------------
  wiggler -> SBM mono -> VFM mirror         cleanup slit -> spinner -> sample env
             white-beam slit                near / far detector towers (PE, Pilatus)

Source (28-ID-1-A): the shared 28-ID damping wiggler and the storage-ring readback, then the optics, the side-bounce monochromator, the vertical focusing mirror, the white-beam slit, and the master energy. This page is generated from the descriptor.
Sample (28-ID-1-B): the endstation cleanup slit, the fast shutter, the capillary spinner, the sample-environment stage, and the thermal-environment cluster (cryostream, cryostat, furnace).
Detector (28-ID-1-B): the PerkinElmer flat-panel and Pilatus pixel area detectors, the two detector towers that set the near and far distances, the beamstops, and the flux monitor.
Controls: the software-triggered acquisition (no hardware timing box, as at XPD), the two-detector plan, and the motion controllers.

Each device binds a catalog Family and a verified EPICS PV; none binds a vendor Model (part numbers are not in the public config). PDF is the twin of XPD on the shared 28-ID damping wiggler and reuses its modelling; the one loose family is the StorageRing machine-state supply.