What CORA needs the 4-ID POLAR team to confirm before the model can be trusted.
4-ID POLAR was reverse-engineered from the beamline's own Bluesky instrument repo (BCDA-APS/polar-bits), so the control handles in the Inventory are the beamline's real PVs, but read from a config snapshot rather than confirmed by staff. Each row below is a fact the beamline team owns, not a CORA modelling choice (those are recorded on Model instead, including which loose Families graduate and the diffractometer Assembly). It is a delete-on-answer queue: when an item is answered, the answer lands in the descriptor and the row is removed, with the reason in the commit. Priorities are Blocks-build (the answer changes the structure of the model), Blocks-go-live (a placeholder is fine for the description, but the real value is needed before CORA observes or drives the hardware), and Nice-to-have.
Do the three experiment stations (4-ID-B, 4-ID-G, 4-ID-H) run off one beam in series, or are any canted / branched off separate beams? Which optics are shared versus per-station?
One root Unit Asset 4-ID POLAR with one optics spine feeding the three stations; KB mirrors and filters are per-station.
One-vs-many beam walks and the shared-vs-per-station optics split in the descriptor.
TOPO-2
Blocks-go-live
The 4-ID-Raman station: what instruments and devices does it carry? (Its devices.yml is a symlink that did not resolve in the source clone, so it did not extract.)
The Raman station exists but is out of this cut.
The Raman station devices and a fifth enclosure if warranted.
TOPO-3
Nice-to-have
Two PVs gave ambiguous station hints: 4iddMZ0: (the SGZ Vortex detector) and 4idkepco: (a Kepco magnet supply). What station does each sit in?
The Vortex is placed at 4-ID-G and the Kepco magnet at 4-ID-G, both confirm. No 4-ID-D / 4-ID-K enclosures are declared.
The Huber Eulerian and high-pressure diffractometers: the real circle set (4-circle Eulerian? 6-circle?) and which motor is which circle (omega, chi, phi, two-theta).
Two diffractometers modelled as plain devices with the config's axis maps; the circle roles are partial.
The circle geometry, which decides the Assembly(Diffractometer) slot shape (see Model).
DIFF-2
Blocks-go-live
The reciprocal-space coordination: is hklpy2 driving an (h, k, l, energy) pseudo-axis, and over what geometry?
A reciprocal-space PseudoAxis is assumed for the Assembly design; not yet a device.
The sample magnets: the two 2 T magnets (bmag/emag) and the high-field magnet (magnet911) field ranges and control PVs (the 2 T magnets had no control PV in the config), and the Kepco-driven gmag.
Four Magnet Assets (loose Family); fields and several PVs unconfirmed.
The magnet specs and handles.
TEMP-1
Nice-to-have
The LakeShore 336 and 340 controllers: sensor channels and the sample stages they regulate.
Two TemperatureController Assets (catalog Family, presents Regulator) at 4-ID-G.
The temperature-controller model.
SAMPLE-1
Nice-to-have
The Ventus laser at 4-ID-H: is it a pump-probe source CORA should model as a device, or only carry as a Clearance hazard?
One Laser Asset (loose Family); modelling-versus-hazard is open.
The laser model or hazard treatment.
SAMPLE-2
Nice-to-have
The preamplifiers, lock-in (srs810), and high-pressure-cell controllers (Pace PC1/PC2) are in the config but not modelled here. Which are beamline equipment versus user-brought?