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The beamline

The part of 9-ID CORA models today, as areas you can jump to: the optics and focusing spine, the grazing-incidence CSSI sample stack, and the detectors, plus the controls. First cut.

9-ID is the Coherent Surface Scattering Instrument, with two stations: 9-ID-A (optics) and 9-ID-D (the CSSI endstation: focusing, the grazing-incidence sample, and the detectors). This cut models the operational core across both; the metadata / Data Management PVs and the simulated devices are deferred (see Model).

Along the beam, in order, sit the stations: the Source that delivers, conditions, and focuses the beam, the Sample stack that places the surface in it at a grazing angle, and the Detector that records what scatters. Cutting across them are the Controls. The stations are containment trees of apparatus (Asset.parent_id); controls relate to it sideways, by controller_id.

Stations

  • Source: the 9-ID-A optics (the undulator, the Kohzu monochromator, the FMBO mirrors, the white-beam apertures, and the attenuator) and the 9-ID-D focusing (the CRL transfocator, the KB mirror) and guard slits.
  • Sample: the 9-ID-D grazing-incidence CSSI sample stack (the sample translation and incidence rotation, the alignment hexapods, and the on-axis viewing microscope).
  • Detector: the coherent area detectors (Pilatus, Eiger on a stage), the GIWAXS detector on its pedestal, the beam stop, and the beam-position monitors.

Shared

  • Controls: the APS EPICS control stack, and the metadata / Data Management seam CORA's system of record replaces. The device handles are bound from the beamline's instrument config and carried confirm (CTRL-1).
  • Resources: the continuously-available supplies a run needs (photon beam, cooling water, vacuum for the focusing optics and the detector flight); carried in the descriptor.

Reference

  • Inventory: the full planned CORA Asset model (every device by parent_id, with Families and pending confirmations), including which loose family is still held for gate-review.