Model

The developer's by-kind index: where each CORA aggregate's SIX content lives, the loose families this first soft X-ray deployment introduced and has since graduated, and the record of what is deliberately deferred. Design-phase scaffold.

For the aggregate shapes see the architecture model and the per-BC modules.

Aggregate (BC)	Where at SIX
Asset (Equipment)	the stage pages: Source, Sample, Detector
Capability, Method (Recipe)	Techniques
Enclosure (Enclosure)	the index
Zone, Conduit, Policy (Trust); Actor (Access)	Governance
Procedure, Recipe, Caution, Supply, Subject, Run, Campaign, Dataset, Decision	deferred (design-phase; see below)

New loose families

SIX is CORA's first soft X-ray beamline, a new optics, detector, and sample-environment regime. It introduced three device classes no hard X-ray catalog Family covered. All three have since graduated: GratingMonochromator became a catalog Family once CSX (NSLS-II 23-ID) earned the soft X-ray PGM, Manipulator once ESM (NSLS-II 21-ID) earned the UHV sample manipulator, and SpectrometerArm once ESRF ID32 (the RIXS and XES arms) and ID28 (the multi-analyzer arm) earned the dispersive spectrometer arm SIX coined (the Monochromator, SampleManipulator, and RIXSSpectrometer here bind them).

Family	Presents	What it is	Status
GratingMonochromator	Positioner	the soft X-ray plane-grating monochromator (PGM): premirror at a fixed-focus c-value plus an interchangeable grating, no Bragg crystal	graduated (SIX + CSX, MONO-1)
SpectrometerArm	Positioner	the meters-long energy-dispersive RIXS arm (bridge truss + optics chamber + detector chamber)	graduated (SIX + ID32 RIXS/XES + ID28)
Manipulator	Positioner	the UHV cryostat sample manipulator (x/y/z/theta)	graduated (SIX + ESM, SAMPLE-1)

The catalog Monochromator is deliberately not stretched to cover the PGM: its note describes a crystal / multilayer Bragg monochromator, and a plane-grating mono has no Bragg crystal, selects energy by grating pitch and translation, and takes its resolution from the exit slit, so GratingMonochromator is a distinct Family rather than a settings variant. Likewise SpectrometerArm is distinct from the catalog EnergyDispersiveSpectrometer (a point Sensor, not a multi-chamber dispersive arm); it presents the Positioner Role (an arm that positions a dispersing grating and carries a Camera at its focus).

Deliberately not here yet

• The RIXS-camera Family question. The RIXS camera does on-detector single-photon centroiding and isolinear curvature correction, a photon-counting regime distinct from an integrating-frame area detector. It is modelled here as the catalog Camera with that behavior carried as a note; whether the photon-counting pipeline warrants its own Family is RIXS-2, deferred (a Camera-with-settings is the lower-risk first cut).

• The EPU polarization DOF. The elliptically-polarizing undulator adds a phase (polarization) axis beyond gap. It binds the catalog InsertionDevice with the polarization carried as a setting; whether the EPU phase warrants a distinct family is deferred until a second EPU beamline (SRC-1).

• The legacy end-station PGM. The profile collection carries a discarded second monochromator instance (Mono:2 / espgm) and a dead PGMjoe class; only the live Mono:1 PGM is modelled.

• The RIXS Method. Whether RIXS enters CORA's catalog is an owner decision; the Practice renders unlinked, pending (TECH-1).

• The simulated devices and full asset-tree scenarios. No test_six_*.py registers the SIX asset tree, and no vendor Models are bound. Those land when the design firms and the team approves.

• Operations and experiment views. A runbook and live experiment view for a beamline CORA does not yet drive would be invention; see the note on the index.