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/isr/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	4-ID
Tier	Unit
Source	insertion-device (confirm: 4-ID is an in-vacuum-undulator (IVU) beamline; the profile collection binds only a read-only gap encoder (SR:C04-ID:G1{IVU:1-LEnc}Gap), no gap-drive setpoint and no energy range. Source identity and parameters are SRC-1)

Enclosures

Enclosure	Role	Facility	Permit signal
isr-optics	optics-hutch	nsls2	confirm: PSS permit leaf not in the profile collection (no PSS / photon-shutter / hutch-interlock device is bound); the optics zones (FE:C04A, XF:04IDA-OP, XF:04IDB-OP), the hutch grouping is ENC-1 (PSS-1)
isr-endstation	experiment-hutch	nsls2	confirm: PSS permit leaf unknown; the zone-D endstation (XF:04IDD-ES), ENC-1 (PSS-1)

Machine

The machine-level source state, observed not driven.

Enclosure: isr-optics.

Note

Observe-only NSLS-II machine state, the loose StorageRing pattern reused from the NSLS-II siblings, plus the in-vacuum undulator gap (read-only in source). SRC-1, MACHINE-1.

Name	Family	PV	Key specs	Replaceable	Status
StorageRing	StorageRing	SR:OPS-BI{DCCT:1}I:Real-I	NSLS-II storage-ring current, read as a beam-present input; observe-only; the rest of the ring state is MACHINE-1		new confirm
Undulator	InsertionDevice	SR:C04-ID:G1{IVU:1-LEnc}Gap	the in-vacuum undulator: only a read-only gap encoder is bound in the profile collection (no gap-drive setpoint, no energy range); the device model and parameters are SRC-1		new confirm

Optics

The double-crystal monochromator, the bendable focusing mirrors, the harmonic-rejection mirror, the front-end slit, and the filter bank.

Enclosure: isr-optics.

Note

The DCM binds Monochromator (its Bragg axis is the physical energy selector; a wired resonant energy pseudo-axis is absent in source, RESONANT-1). The focusing pair and the harmonic-rejection mirror bind Mirror, the front-end slit binds Slit, the filter bank binds Filter. Everything here reuses the catalog and coins nothing.

Name	Family	PV	Key specs	Replaceable	Status
Monochromator	Monochromator	XF:04IDA-OP:1{Mono:DCM-Ax:th}Mtr	the double-crystal monochromator (DCM): Bragg theta sets the energy, with crystal-bend, Z / Y2 and second-crystal pitch / roll (coarse + fine) alignment axes; the crystal cut and energy range are MONO-1; a wired energy / resonant pseudo-axis is absent in source (RESONANT-1)		new confirm
FocusingMirror	Mirror	XF:04IDA-OP:1{Mir:HFM-Ax:P}Mtr	the bendable focusing mirror pair, a horizontal (HFM) and a vertical (VFM) focusing mirror each on x / pitch / y / yaw / roll plus a bender; one Asset for the pair at this cut; coatings are OPT-1		new confirm
HarmonicRejectionMirror	Mirror	XF:04IDB-OP:1{Mir:DHRM-Ax:P}Mtr	the harmonic-rejection mirror (DHRM) in zone B, with fine roll / pitch axes; coating and cutoff are OPT-1		new confirm
FrontEndSlit	Slit	FE:C04A-OP{Slt:12-Ax:X}center	the front-end defining slit, a virtual center / gap pseudo-positioner (no plain blade Mtr leaf; x / y center and gap over the underlying blades); blade-axis map is OPT-2; the secondary-source (SSA) slit is defined but commented out in source (OPT-2)		new confirm
AttenuatorBank	Filter	XF:04IDD-ES{Fil:1}Cmd:Opn-Cmd	the four-foil pneumatic attenuator bank (Fil:1-4, each a two-button shutter with Cmd:Opn-Cmd / Cmd:Cls-Cmd), bit-encoded to a transmission level; sets the incident flux on the sample (ATTN-1)		new confirm