The beamline¶

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

SMI runs from an in-vacuum undulator through a first-optics hutch into an experiment hutch where the focused beam meets a film, interface, or bulk sample and the scattering pattern is recorded on two Pilatus detectors at once. Two enclosures carry it:

  12-ID-A  (optics hutch / FOE)            12-ID-C  (experiment hutch)
  ----------------------------------       --------------------------------------
  IVU -> DCM -> HF / VF mirrors            CRL -> sample -> SAXS 2M (flight path, Q)
         WB slit -> attenuators                   (grazing)   WAXS 900KW (swing arc)

Source (12-ID-A): the in-vacuum undulator and the front-end shutter, then the optics, the double-crystal monochromator, the horizontal and vertical focusing mirrors, the compound-refractive-lens transfocator, the white-beam and secondary-source slits, and the attenuator banks. This page is generated from the descriptor.
Sample (12-ID-C): the experiment-hutch beam-defining and guard slits, the HUB sample stack with grazing-incidence axes, and the Linkam sample environment.
Detector (12-ID-C): the simultaneous SAXS and WAXS Pilatus detectors, the SAXS camera-length stage and beamstops, the flux monitor, and the fluorescence detector.
Controls: the fast shutter that gates the exposure, 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). The Transfocator reuses the graduated catalog Family (a CRL focusing optic, shared with 4-ID, 8-ID, 9-ID, i22, and CHX). The one loose family is the BeamPositionMonitor, shared with other deployments and held for gate-review.