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The beamline

The part of HEX CORA models today, as areas you can jump to: the source and monochromator spine, the heavy-sample endstation, and the detectors, plus the controls. First cut.

HEX (High Energy Engineering X-ray Scattering) is the NSLS-II high-energy engineering and energy-storage beamline at sector 27-ID. It resolves microstructure and atomic structure under working conditions by high-energy X-ray imaging and tomography, energy-dispersive diffraction (EDXD), and angle-dispersive / powder diffraction (ADXD). Its source is a superconducting wiggler delivering a white beam of 30 to 250 keV and a monochromatic beam of 30 to 200 keV (SCW-1, MONO-2). The First Optics Enclosure (hex-foe) carries the wiggler, the low-energy filters, and the bent-Laue monochromator; the operational endstation (hex-endstation, the F-hutch) sits in a satellite building adjacent to Bldg. 742, about 100 m from the source, and holds the sample tower and the detectors (ENC-1, SAT-1, LAYOUT-1).

Along the beam, in order, sit the stations: the Source that delivers, hardens, and energy-selects the incident beam, the Sample that places the specimen at a chosen position and angle, and the Detector that records the imaging, energy-dispersive, and angle-dispersive signals. 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 machine state read through a loose StorageRing (MACHINE-1); the superconducting wiggler (SCW-1); the FOE low-energy filters that harden the white beam (FILT-1); the bent-Laue monochromator, whose first crystal moves in for the monochromatic beam and out for white (MONO-1, MONO-2); the incident-energy pseudo-axis over it; and the front-end defining slits (BRANCH-1).
  • Sample: the reconfigurable sample tower (up to 500 kg, fully removable, configs A to D, STAGE-1), the tomographic rotation, and the sample translations. The endstation is capable of housing user-brought in-situ environments, none modelled in this cut (INSITU-1).
  • Detector: the Kinetix sCMOS imaging cameras and their scintillator-lens table, the Phantom Veo high-speed camera, the PerkinElmer flat panel for angle-dispersive diffraction (DET-1), the GeRM germanium strip detector for energy-dispersive diffraction (DET-2), and the detector / optics positioning that switches technique in the one endstation (TECH-1).

Shared

  • Controls: the NSLS-II EPICS / ophyd control stack, the same floor as the NSLS-II siblings, and the bluesky-plan orchestration CORA's edge replaces. The endstation detector handles are bound from the beamline's profile collection and carried confirm; the FOE-optics handles are pending (CTRL-1).
  • Resources: the continuously-available supplies a run needs (the photon beam, cooling water, and vacuum for the FOE optics); the cryogen-free wiggler draws no liquid helium (SUP-1).

Reference

  • Inventory: the full planned CORA Asset model (every device by parent_id, with Families and pending confirmations), including the one loose family.