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/lcls-mfx/beamline.yaml. Edit the descriptor, not this page. For the CORA Asset model, settings, vendor catalog, drawings, and wiring, see Inventory.
| Property | Value |
|---|---|
| Facility | slac |
| Tier | Unit |
| Source | free-electron-laser (confirm: SASE hard-X-ray FEL on the shared LCLS linac + HXR undulator line; photon energy is set per-shot (vernier / undulator), not as a standing setpoint, and the same source feeds many co-equal instruments one at a time (SRC-1 / TOPO-1). |
| ) |
Enclosures¶
| Enclosure | Role | Facility | Permit signal |
|---|---|---|---|
LCLS-FEE |
optics-hutch | slac |
confirm: LCLS PPS search-and-secure signal TBD; shared front-end / transport (TOPO-1, PSS-1) |
LCLS-MFX |
experiment-hutch | slac |
confirm: LCLS PPS + pump-probe BTPS laser interlock TBD (PSS-1, LASER-1) |
Undulator source¶
The free-electron-laser source and its per-shot pulse-energy monitor.
Enclosure: LCLS-FEE.
Note
LCLS is a linac-driven FEL, not a storage ring, so the loose StorageRing family used by the synchrotron exercises does not fit; machine beam is carried as a PhotonBeam Supply (MACHINE-1). The undulator photon energy is set per shot (vernier / undulator gap); CORA has no per-shot energy setpoint, and the undulator-as-driven-source with energy->gap control is deferred (SRC-1).
| Name | Family | PV | Key specs | Replaceable | Status |
|---|---|---|---|---|---|
Undulator |
InsertionDevice |
confirm: LCLS HXR undulator line (USEG / vernier energy request); per-segment handles TBD (SRC-1) |
device type: SASE free-electron-laser undulator the FEL source; SASE / self-seeded mode and per-shot photon energy are a DAQ-plane datum, not a standing setpoint (SRC-1, DAQ-1) |
new confirm |
|
GasDetector |
FluxMonitor |
confirm: GDET:FEE1:241:ENRC (read via BeamStats, not a happi device) |
FEL pulse-energy gas detector; presents the Sensor Role; loose family reused from i22 (DIAG-1). Per-shot pulse energy is correlated in the DAQ by pulse-ID (DAQ-1) | new confirm |
Front end transport¶
The shared solid attenuators, offset mirrors, X-ray transport mirrors, PPS stopper, and transport diagnostics that condition and steer the beam toward MFX.
Enclosure: LCLS-FEE.
Note
The X-ray transport mirrors (XRT) are where the single FEL source is steered down one branch to one instrument at a time; CORA has no switched-shared-source model, so the routing is carried here but the topology is deferred (TOPO-1). Vacuum gate valves are floor (not modelled), as at i03.
| Name | Family | PV | Key specs | Replaceable | Status |
|---|---|---|---|---|---|
FrontEndAttenuator |
Filter |
SATT:FEE1:320 |
solid-Si front-end attenuator; the existing Filter Family covers it (adversarial-verified). Target-transmission solving (foil combination for a requested transmission, energy-dependent) is the deferred Attenuable leg (ATT-1) | new confirm |
|
FrontEndMirror1 |
Mirror |
FEE1:M1H |
first horizontal offset mirror; OffsetMirror folds into the Mirror Family | new confirm |
|
FrontEndMirror2 |
Mirror |
FEE1:M2H |
second horizontal offset mirror | new confirm |
|
TransportMirror2 |
Mirror |
XRT:M2H |
X-ray-transport steering mirror | new confirm |
|
TransportMirror3 |
Mirror |
XRT:M3H |
X-ray-transport steering mirror that routes the beam to the experiment branch; the switched-source seam (one source, many instruments) lives here (TOPO-1) | new confirm |
|
TransportStopper |
Shutter |
HFX:DG2:STP:01 |
PPS-interlocked beam stopper on the transport line; permit signal to confirm (PSS-1) | new confirm |
|
TransportSlits |
Slit |
HFX:DG2:JAWS |
transport-line 4-blade slits (gap/center virtual axes) | new confirm |
|
TransportIPM |
FluxMonitor |
HFX:DG2:IPM |
intensity-position monitor; presents the Sensor Role for both flux (FluxMonitor) and beam position (Diagnostic); loose families reused (DIAG-1). Per-shot intensity normalization is a DAQ-plane concern (DAQ-1) | new confirm |
|
TransportImager |
Scintillator |
HFX:DG2:PIM |
profile-imager (YAG screen + camera); the screen presents Scintillator, the camera presents Camera (Detector Role) | new confirm |