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/xpd/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	Sector 28
Tier	Unit
Source	insertion-device (confirm: the source is an insertion device; no source PV or parameters are in the profile collection. It is understood from facility knowledge (not the profile collection) to be a damping wiggler, the high-flux high-energy source PDF needs; that subtype is an inference pending staff confirmation (SRC-1))

Enclosures

Enclosure	Role	Facility	Permit signal
28-ID-A	optics-hutch	nsls2	confirm: PSS search-and-secure permit leaf not in source; only the endstation exposure shutter (XF:28IDC-ES:1{Sh:Exp}) is exposed, not the front-end PPS leaves (PSS-1)
28-ID-C	experiment-hutch	nsls2	confirm: PSS permit leaf unknown; 28-ID-C is the main PDF / powder endstation, with a downstream high-resolution endstation 28-ID-D deferred (ENDSTATION-1) (PSS-1)

Source

The insertion-device source feeding the high-energy beam.

Enclosure: 28-ID-A.

Name	Family	PV	Key specs	Replaceable	Status
Source	InsertionDevice		28-ID insertion-device source. No source PV or parameters are in the profile collection; from facility knowledge (not the public config) it is understood to be a damping wiggler, the high-flux high-energy regime PDF needs, which is an inference pending staff confirmation (SRC-1).		confirm

Optics

Condition the high-energy beam and set its energy: the bent double-Laue monochromator for high flux, the vertical focusing mirror, the white-beam slit, and the filters. PVs verified against startup/15-optics.py and 10-motors.py. (A separate high-resolution monochromator in the 28-ID-C hutch feeds the high-resolution endstation, deferred with it, ENDSTATION-1.)

Enclosure: 28-ID-A.

Name	Family	PV	Key specs	Replaceable	Status
Monochromator	Monochromator	XF:28IDA-OP:1{Mono:DLM-C:	Bent double-Laue monochromator (dlm, two crystals C:1 / C:2 with many bender axes); a transmission Laue mono giving high flux at high energy, the same bent-Laue shape Diamond i15-1 uses for PDF. The EnergyAxis below is the master energy; crystal and range pending (DCM-1).		confirm
VerticalFocusingMirror	Mirror	XF:28IDA-OP:1{Mir:VFM-Ax:	Vertical focusing mirror (vfm) with bender axes; reuses the Mirror family.		confirm
WhiteBeamSlit	Slit	XF:28IDA-OP:2{Slt:H-Ax:	Horizontal beam-defining slit (class Slits).		confirm
Filters	Filter	XF:28IDA-OP:2{Fltr:1-Ax:Y}	Attenuator filter (fltr1) trimming flux; a separate filter on a different optical leg (fltr6 at OP:0) and an endstation filter bank (XF:28IDC-OP:1{Fltr}) also exist. Reuses the Filter family.		confirm
EnergyAxis	PseudoAxis		The master energy axis set by the double-Laue monochromator. XPD runs at a fixed high energy per experiment; whether energy is ever scanned as the measurement is ENERGY-1.		confirm
BeamPositionMonitor	BeamPositionMonitor	XF:28IDA-BI:0{BPM:1-Ax:	Beam-position monitor (bpm1) in the optics hutch. Binds the loose BeamPositionMonitor family that 4-ID/8-ID/9-ID also use (held; DIAG-1), matching the catalog note that position monitors stay loose.		confirm