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/mx3/beamline.yaml. Edit the descriptor, not this page. For the CORA Asset model, settings, vendor catalog, drawings, and wiring, see Inventory.

Property	Value
Facility	as
Sector	MX3
Tier	Unit
Source	insertion-device (confirm: MX3 is an undulator beamline, but the insertion-device / front-end source PV is not in the device library; only the storage-ring current monitor (SR11BCM01:CURRENT_MONITOR) is exposed. The source identity and parameters are an open question (SRC-1))

Enclosures

Enclosure	Role	Facility	Permit signal
MX3-OH	optics-hutch	as	confirm: PSS permit leaf not in source; the front-end shutter is MX3FE01SHT01 and the mono-beam shutter MX3BLSH01SHT01 (PSS-1, ENC-1)
MX3-EH	experiment-hutch	as	confirm: PSS permit leaf unknown; the experiment hutch carries the MD3 microdiffractometer, the Eiger, and the ISARA robot (PSS-1, ENC-1)

Source

The storage-ring source-current monitor and the front-end shutter. The insertion-device source itself is not in the device library (SRC-1).

Enclosure: MX3-OH.

Name	Family	PV	Key specs	Replaceable	Status
StorageRing	StorageRing	SR11BCM01:CURRENT_MONITOR	Storage-ring beam-current monitor (ring_current); the only source-side PV in the library. MX3's undulator / insertion device is not exposed here (SRC-1). Reuses the loose StorageRing family.		confirm
WhiteBeamShutter	Shutter	MX3FE01SHT01	Front-end photon shutter (white_beam_shutter, a PSS shutter; OPEN_CLOSE_CMD / OPEN_CLOSE_STATUS / OPEN_ENABLED_STATUS).		confirm

Optics

Set the energy and condition the beam: the double-multilayer monochromator, the master energy axis, and the attenuator / transmission unit. PVs verified against mx3_beamline_library/devices/beam.py. No standalone mirror or slit device is in the library (OPT-1).

Enclosure: MX3-OH.

Name	Family	PV	Key specs	Replaceable	Status
Monochromator	Monochromator	MX3MONO01:	Double-multilayer monochromator (energy_dmm; ENERGY_MONITOR / ENERGY_SP, with a coating-stripe position monitor STRIPE_POSITION_MONITOR, read-only in the library; physical stripe selection inferred). Reuses the Monochromator family; the stripe is a per-Asset setting. Crystal / multilayer detail pending (DCM-1).		confirm
EnergyAxis	PseudoAxis	MX3:MASTER_ENERGY_SP	The master beamline energy setpoint (MX3:MASTER_ENERGY_SP), which the monochromator tracks. Whether energy is scanned as the measurement (anomalous MX) is ENERGY-1.		confirm
Attenuators	Filter	MX3FLT05:	Attenuator / transmission unit (a filter wheel; AttenuationSet / TransmissionSet, with BeamSize_X / BeamSize_Y readbacks). Reuses the Filter family. Foil set pending (DCM-1).		confirm