Open questions¶

What CORA needs the 8.3.2 team to confirm before the model can be trusted.

8.3.2 was reverse-engineered from ALS's public facility pages (als.lbl.gov/beamlines/8-3-2, microct.lbl.gov) and the public als-computing GitHub org, not from a live connection. The device structure is read from the DXchange / DXfile HDF5 data record that the ALS tooling reads, but ALS runs BCS (a LabVIEW Beamline Control System, not EPICS) and publishes no per-beamline channel manifest, so the Inventory is a planned shape with control handles unbound. This is CORA's first ALS Site and its first BCS / LabVIEW controls house-style. Each row below is a fact the beamline team owns, not a CORA modelling choice (those are on Model). It is a delete-on-answer queue. Priorities are Blocks-build, Blocks-go-live, and Nice-to-have.

Topology and scope¶

ID	Priority	Question	CORA assumes	Resolves
ENC-1	Blocks-go-live	The hutch grouping: a single experiment hutch, or a separate optics hutch feeding it?	A single `8-3-2-hutch`.	The Enclosure grouping.
SRC-1	Nice-to-have	The Superbend field and critical energy.	A superconducting bending-magnet source, 6-43 keV; field pending.	The source Asset detail.
ALSU-1	Nice-to-have	The ALS-U upgrade fate of 8.3.2: does it go dark, get rebuilt, or relocate, and on what schedule?	Dark time no sooner than October 2027; 8.3.2's fate carried pending.	The deployment roadmap.

Source and optics¶

ID	Priority	Question	CORA assumes	Resolves
MACHINE-1	Nice-to-have	The ALS storage-ring state 8.3.2 reads (the `source_name` / `current` handles).	Observe-only machine state, a loose `StorageRing`; exact handles pending.	The machine-state observation.
MONO-1	Blocks-go-live	The energy optic: the mechanism (multilayer vs crystal), d-spacing, and how the `energy`, `Z2`, `turret1` / `turret2`, and `TC2` / `TC3` channels relate.	An energy-setting `Monochromator`, 6-43 keV; `energy` the master axis.	The monochromator and energy modelling.
OPT-2	Nice-to-have	The slit blade-axis map (the `hslits_` and `vslits_` channels) and handles.	Horizontal + vertical slits bound to `Slit`.	The slit Asset detail.
FILT-1	Nice-to-have	The attenuating-filter materials and thicknesses on the `filter_y` axis.	A filter bound to `Filter`.	The filter Asset detail.

Sample endstation¶

ID	Priority	Question	CORA assumes	Resolves
SAMPLE-1	Blocks-go-live	The sample-motor stack: the rotary, the sample-centring axes (`sample_x` / `sample_y`), and the role of `axis1pos` / `axis2pos` / `axis5pos`.	A `RotaryStage` plus a `LinearStage`; axis sets and models pending.	The sample-stage modelling.
ROT-1	Blocks-go-live	Which sample-stack axis is the tomographic rotation.	One of the `axisNpos` channels is the rotation; identity pending.	The rotation Asset binding.
TRIG-1	Nice-to-have	The triggering / synchronization scheme for continuous-rotation tomography.	The rotary stage is the master clock feeding the camera trigger.	The trigger wiring.

The detector¶

ID	Priority	Question	CORA assumes	Resolves
DET-1	Blocks-go-live	The detector chain: the camera sensor / frame rate / model, the `scintillator_type`, and the `camera_objective` set.	A `Scintillator` + `Objective` + `Camera`; specs are per-dataset values, model carried pending.	The detector modelling.
DET-2	Nice-to-have	The detector-stack axes (`camera_distance`, `camera_elevation`, `tilt_motor`): models, travels, and which is the propagation distance.	A `LinearStage` detector stack; `camera_distance` the propagation distance.	The detector-stack modelling.

Control and safety¶

ID	Priority	Question	CORA assumes	Resolves
CTRL-1	Blocks-build	The BCS / LabVIEW control handles per 8.3.2 device (absent from any public manifest).	The handles are unbound, carried pending; the control plane is ALS BCS.	Binding each Asset's control handle.
PSS-1	Blocks-go-live	The ALS personnel-safety permit signals and the photon / front-end shutters (not published per beamline).	Permit leaves and shutters to be named; not invented here.	The Enclosure permit signals and the safety tier.
SUP-1	Nice-to-have	The vacuum extent and the cooling-water / beam / power supplies.	Photon beam, cooling water, vacuum, and power.	The Supply observations.
GOV-1	Nice-to-have	The ALS operator pool and safety-review structure (site-level).	Carried pending on the ALS Site, not instantiated per beamline.	The governance principals.