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Open questions

What CORA needs the 7-BM team to confirm before the model can be trusted.

7-BM is in the design phase and its operations documentation is partial, so this page is long by design: almost every value in the Inventory is taken from the 7-BM docs or inferred, not confirmed with staff. Each row below is a fact the beamline team owns, not a CORA modelling choice. 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 (needed before the model is built for real), Blocks-go-live (needed before first users), and Nice-to-have.

A note on what 7-BM tests that 2-BM did not: 7-BM is multi-technique (high-speed imaging, radiography, tomography, energy-dispersive diffraction, fluorescence), runs white, monochromatic, and focused beam, and carries a flow and combustion sample environment. The questions below concentrate on the new shapes; the tomography path itself reuses the 2-BM model unchanged.

Control and safety

ID Priority Question CORA assumes Resolves
CTRL-1 Blocks-build What are the EPICS PV handles for each device? Control handles are unassigned; CORA leaves the device handle empty. Wiring each Asset to a real control handle.
PSS-1 Blocks-build What are the PSS search-and-secure permit signals for the 7-BM-A and 7-BM-B hutches? Both hutches exist with permit signals to be named. The Enclosure permit signals.
HAZ-1 Blocks-go-live Do combustion, flammable-gas, or radioactive-check-source experiments need a review / approve / expire workflow distinct from the standard APS ESAF clearance? The flow and combustion hazard surface is handled by ESAF clearances plus operator Cautions plus alarms, not a separate hazard aggregate. Whether a Hazard lifecycle is earned beyond Clearance and Caution.

Sources and optics

ID Priority Question CORA assumes Resolves
SRC-1 Blocks-build What is the 7-BM source after APS-U? The docs do not state it. A bending-magnet source, carried confirm, mirroring the 2-BM source representation. The Source device and beamline source field.
BEAM-1 Blocks-build Which beam mode (white, monochromatic via the DMM, or focused via the KB mirrors) is canonical for each technique, and is the DMM split-stripe dual-energy mode used routinely? Beam mode is a per-technique choice over one set of optics, not a fixed source property. Binding each technique and Practice to a beam mode.
OPT-1 Nice-to-have Which optics sit in the routine pilot path: the DMM, the multilayer mirror, the KB focusing pair, the polycapillary optics, and the channel-cut calibration crystals? The DMM, multilayer mirror, and KB pair are modelled; the polycapillary and channel-cut crystals are deferred until a confirmed technique needs them. Which optics are Assets and which stay deferred.
CHOP-1 Blocks-go-live Is the rotary chopper permanently installed or fitted per time-resolved run, is its duty cycle a commanded setting or a manual mechanical re-index, and is the photoeye a tracked Sensor or inseparable floor wiring? A loose Chopper family, pending whether it is a new catalog Family or an existing Shutter / RotaryStage plus settings. The chopper modelling boundary.

Techniques

ID Priority Question CORA assumes Resolves
TECH-1 Blocks-go-live Which techniques are in scope for the CORA pilot: tomography, high-speed imaging, radiography, energy-dispersive diffraction, confocal fluorescence, and which combine (the docs note EDD running simultaneously with tomography)? Tomography reuses the 2-BM Methods; the other techniques are design intent, carried pending on the APS site Practices. Which Methods and Practices the pilot binds.

Detector

ID Priority Question CORA assumes Resolves
DET-1 Blocks-go-live Is the germanium energy-dispersive detector the same physical device as the fluorescence MCA, and is XRF a routine standalone technique or only an EDD energy-scale calibration step? One EnergyDispersiveSpectrometer device presenting the Sensor Role, with fluorescence as a calibration step, not a separate detector. One versus two Sensor-backed detector Assets, and whether a spectroscopy Method is earned.
RAD-1 Blocks-go-live For time-resolved radiography, what is the point-detector chain (PIN diode plus ADQ14 digitizer or oscilloscope plus DataGrabber), and is one acquisition trace one Dataset? A Photodiode device presenting the Sensor Role; the digitizer / scope / DataGrabber stay on the floor; the data unit is unconfirmed. The radiography detector Family and the Run / Dataset shape.
HSI-1 Blocks-go-live For high-speed imaging, is one chopper-gated movie burst one Run / Dataset (and the N-sequence set one Campaign), and how are top-up-blanked frames represented (invalid-marked, dropped, gap)? One high-speed Camera; the acquisition unit and blanking semantics are unconfirmed. The Run / Dataset / Acquisition shape for time-resolved capture.

Sample environment

ID Priority Question CORA assumes Resolves
FLOW-1 Blocks-build Must CORA command the gas-flow and compressed-air setpoints (the Sierra Smart-Trak controllers and the electronic air regulator), or only read them back, and is there a third settable sample-environment actuator? A loose FlowController family presenting the now-earned Regulator Role (Settable affordance); the settable-actuator shape is settled, so what is open is whether CORA commands the setpoints and whether FlowController itself graduates (loose at 7-BM + I22, short of rule-of-three). The command-vs-read decision and FlowController graduation.
ENV-1 Blocks-go-live Is there an installed combustion, spray, or fuel-injection device at 7-BM, or is combustion an intended use served by the air, gas, and vacuum infrastructure? No combustion rig Asset is modelled; combustion is served by the facility Supplies and bound to the specimen Subject. Whether a combustion-rig Asset and a fuel-vapor Caution are modelled.

Controls and site

ID Priority Question CORA assumes Resolves
TIMING-1 Nice-to-have Should the DG645 delay generators, softGlue FPGA, Machine Status Link P0 reference, and top-up inhibit be one TimingController device, or do any of them deserve separate modelling? One TimingController carries the whole scheme, mirroring the 2-BM Timing device. The timing-subsystem Asset shape.
SECTOR-1 Nice-to-have Confirm 7-BM is in Sector 7, and whether it shares any governed resource (optics, safety system, compute) with another APS beamline. 7-BM is a separate beamline in Sector 7 under the APS Site, sharing no governed resource with 2-BM. The sector label and any cross-beamline shared-resource governance.