Source¶

The incident beam, produced, conditioned, and defined before the sample. A walk along the source-stage devices; the sample and detection stages are documented as their own composed-fixture pages, the controllers that drive these devices are on the Controls page, and the supplies they draw on are in Operations. Each device pairs its human name with the EPICS handle, its key specs, and whether it is field replaceable. new marks a device not yet modeled in CORA; confirm marks a value taken from the docs that staff have not yet verified.

Generated from the descriptor

This page is generated from the descriptor at deployments/hex/beamline.yaml. Edit the descriptor, not this page. For the CORA Asset model, settings, vendor catalog, drawings, and wiring, see Inventory.

Property	Value
Facility	nsls2
Sector	27-ID
Tier	Unit
Source	superconducting-wiggler (confirm: superconducting wiggler (SCW), 4.3 T on-axis peak field, 70 mm period, 1.2 m device length, cell-27 low-beta straight on the 3 GeV NSLS-II ring; cryogen-free (no liquid helium); commissioned 2023. Pole count and critical photon energy are SCW-1)

Enclosures¶

Enclosure	Role	Facility	Permit signal
`hex-foe`	optics-hutch	`nsls2`	confirm: PSS search-and-secure permit leaf not in the profile collection; the First Optics Enclosure (A-hutch), the filters and the monochromator (PSS-1)
`hex-b`	future-hutch	`nsls2`
`hex-c`	future-hutch	`nsls2`
`hex-d`	future-hutch	`nsls2`
`hex-e`	future-hutch	`nsls2`
`hex-endstation`	experiment-hutch	`nsls2`	confirm: PSS permit leaf unknown; the operational F-hutch in the satellite building adjacent to Bldg. 742 (PSS-1, SAT-1)

Machine¶

The machine-level source state, observed not driven.

Enclosure: hex-foe.

Note

Observe-only NSLS-II machine state, the loose StorageRing pattern reused from the NSLS-II siblings. The exact ring-state PVs are MACHINE-1.

Name	Family	PV	Key specs	Replaceable	Status
`StorageRing`	`StorageRing`	confirm: `NSLS-II storage-ring state (current, fill, status); observe-only, the exact PVs are MACHINE-1`	NSLS-II 3 GeV storage-ring state; observe-only (MACHINE-1)		`new` `confirm`

Insertion device¶

The superconducting wiggler that delivers the high-energy white beam.

Enclosure: hex-foe.

Note

The superconducting wiggler binds the existing InsertionDevice Family (the undulator precedent at the NSLS-II siblings). Its high field (4.3 T) and energy reach (a useful spectrum from about 20 to 200 keV) are what make HEX a high-energy beamline; the field, period, and length are confirmed from peer-reviewed papers, but the pole count and critical photon energy are SCW-1.

Name	Family	PV	Key specs	Replaceable	Status
`Wiggler`	`InsertionDevice`	confirm: `the superconducting wiggler gap / field handle; not in the profile collection (SCW-1, CTRL-1)`	superconducting wiggler (SCW): 4.3 T on-axis, 70 mm period, 1.2 m, cell 27; cryogen-free; delivers the 30 to 250 keV white spectrum; pole count and critical energy are SCW-1		`new` `confirm`

Foe optics¶

The low-energy filters that harden the white beam, the bent-Laue monochromator that selects energy (or retracts for white beam), the incident-energy axis, and the front-end defining slits.

Enclosure: hex-foe.

Note

The low-energy filters bind Filter; the monochromator binds Monochromator (a Si bent-Laue Bragg optic, not the soft X-ray GratingMonochromator), and inserting or retracting its first crystal selects monochromatic versus white beam, so the beam mode is a setting on the optic, not a second source (MONO-2). The incident energy is a PseudoAxis over the monochromator (the 2-BM / CMS beam-energy pattern). The front-end slits bind Slit. The focusing optic for the monochromatic beam is "being commissioned" on the official beamline page and is not yet modelled as a device (FOCUS-1).

Name	Family	PV	Key specs	Status
`BeamFilters`	`Filter`	confirm: `the FOE low-energy filter / absorber positions (per-branch SiC and Cu); not in the profile collection (FILT-1, CTRL-1)`	the FOE low-energy (beam-hardening) filters: center-branch SiC (3 / 6 / 9 / 12 mm) and outboard / inboard Cu (0.5 to 2 mm) plus SiC (12 / 24 mm) on a 35 mm pitch; the materials and thicknesses are FILT-1	`new` `confirm`
`Monochromator`	`Monochromator`	confirm: `the monochromator crystal Bragg / translation handle (a Phytron VSS-42 stepper drives the crystal in / out); not in the profile collection (MONO-1, CTRL-1)`	the bent-Laue monochromator: a single first crystal (Si(111) bent Laue, MONO-1) on a vertical translation, inserted for the 30 to 200 keV monochromatic beam and retracted for the 30 to 250 keV white beam; the crystal material / geometry are MONO-1 and the 200 keV upper bound is MONO-2	`new` `confirm`
`BeamEnergy`	`PseudoAxis`	confirm: `incident-energy virtual axis over the monochromator (lambda = 2 d sin(Bragg)); the d-spacing and partition rule are MONO-1 / MONO-2`	incident-energy pseudo-axis over the monochromator (the 2-BM / CMS beam-energy pattern); the 30 to 200 keV monochromatic range is MONO-2	`new` `confirm`
`FoeSlit`	`Slit`	confirm: `the front-end defining slits (a center, inboard, and outboard branch); not in the profile collection (BRANCH-1, CTRL-1)`	the front-end defining slits; the beam has a center branch and inboard / outboard branches reserved for the future-hutch upgrade, only the center branch is presently in use (BRANCH-1)	`new` `confirm`