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/bmm/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 6 |
| Tier | Unit |
| Source | bending-magnet (confirm: 6-BM bending-magnet source (BMPS/IDPS on SR:C06-EPS); not an insertion device (SRC-1)) |
Enclosures¶
| Enclosure | Role | Facility | Permit signal |
|---|---|---|---|
6-BM-A |
optics-hutch | nsls2 |
confirm: PSS search-and-secure permit leaf not in source; the front-end and photon shutters are XF:06BM-PPS{Sh:FE} and {Sh:A} (PSS-1) |
6-BM-B |
experiment-hutch | nsls2 |
confirm: PSS permit leaf unknown; endstation hutch boundary to confirm (ENC-1) |
Source¶
The bending-magnet source and the front-end / photon shutters.
Enclosure: 6-BM-A.
| Name | Family | PV | Key specs | Replaceable | Status |
|---|---|---|---|---|---|
Source |
Beam |
6-BM bending-magnet source, recorded as a PhotonBeam Supply, not an Asset (the 2-BM precedent). Beam-parameter machine state is on SR:C06. | new confirm |
||
FrontEndShutter |
Shutter |
XF:06BM-PPS{Sh:FE} |
Front-end safety shutter (sha); PPS-gated. | confirm |
|
PhotonShutter |
Shutter |
XF:06BM-PPS{Sh:A} |
Photon shutter into the optics (shb); PPS permit leaf pending (PSS-1). | confirm |
Optics¶
Condition the beam and set its energy: two mirrors, the double-crystal monochromator, the beam-defining slits, and the attenuating filters. PVs verified against startup/BMM/user_ns/instruments.py and dcm.py.
Enclosure: 6-BM-A.
| Name | Family | PV | Key specs | Replaceable | Status |
|---|---|---|---|---|---|
CollimatingMirror |
Mirror |
XF:06BM-OP{Mir:M1 |
First mirror M1 (class Mirrors, 556 mm), collimating; bend/translation axes (YU/YDO/YDI/XU/XD). | confirm |
|
Monochromator |
Monochromator |
XF:06BMA-OP{Mono:DCM1 |
axis channels: {'Bragg': 'XF:06BMA-OP{Mono:DCM1-Ax:Bragg}Mtr'} crystal cut: Si(111) Double-crystal monochromator (class DCM, instance dcm, Si(111)). The Bragg angle is the energy actuator; the EnergyAxis below is the master energy. A second crystal set may be available (DCM-1). |
confirm |
|
FocusingMirror |
Mirror |
XF:06BMA-OP{Mir:M2 |
Second mirror M2 (class Mirrors, 1288 mm), focusing and harmonic-rejection; bend/translation axes. | confirm |
|
ConditioningSlit |
Slit |
XF:06BMA-OP{Slt:01 |
Optics-hutch beam-defining slit (slits2, class StandardSlits): outboard/inboard/top/bottom blades. | confirm |
|
SampleSlit |
Slit |
XF:06BM-BI{Slt:02 |
Endstation entrance slit (slits3): O/I/T/B blades defining the beam onto the sample. | confirm |
|
Filter |
Filter |
XF:06BMA-BI{Fltr:01 |
Attenuating filter paddles (dm1_filters, Y1/Y2) in the first diagnostic module. | confirm |
|
EnergyAxis |
PseudoAxis |
The master energy axis: driving it sets the monochromator Bragg angle. An XAS measurement SWEEPS this axis across an absorption edge; that sweep is the energy_scan Capability the catalog anticipates but does not yet coin (ENERGY-1). | confirm |
||
DiagnosticScreen |
Screen |
XF:06BMA-BI{Diag:02 |
Fluorescent diagnostic screens (dm2_fs, dm3_fs) for beam viewing; loose Screen family (the 2-BM FLAG precedent). | new confirm |
|
BeamPositionMonitor |
GenericProbe |
XF:06BM-BI{BPM:1 |
Beam-position monitor and beam-current transmitter (dm3_bpm, dm3_bct) in the diagnostic module; read-only. | confirm |