Model

The developer's index into where CSX content lives, the GratingMonochromator graduation this deployment earns, and the record of what is deliberately deferred. First cut.

CSX is a descriptor-and-docs scaffold today, reverse-engineered from the beamline's profile collection: it exists as the descriptor and docs below, not yet as registered events or integration scenarios. This page points to where each piece lives, and records the scope decisions that are CORA's to make (kept off the staff Open questions, which carry only world-facts).

Kind	Where	Notes
Beamline descriptor	deployments/csx/beamline.yaml	the device walk with bound PVs; source of the generated Source page
Site descriptor	deployments/nsls2/site.yaml	the NSLS-II facility surface; CSX added to its beamline list, with RSXS / diffraction Practices
Extraction provenance	NSLS2/csx-profile-collection	the startup/csx1 device classes the descriptor was curated from
Catalog Family	catalog/catalog.yaml	GratingMonochromator graduates with this deployment (below); no other change
Catalog Method	catalog/catalog.yaml	none added; the RSXS / diffraction legs reuse existing pending Methods (TECH-1)
Equipment Assets	not yet registered	the Inventory is the planned shape; no scenario registers CSX Assets yet
Trust / governance	not yet instantiated	see Governance

What this deployment graduates

CSX is the consolidation deployment for soft X-ray. SIX (NSLS-II 2-ID) introduced GratingMonochromator as a loose family at n=1; CSX's VLS-PGM (XF:23ID1-OP{Mono, 200-2200 eV) is the second independent soft X-ray plane-grating monochromator, which earns the rule-of-three. So GratingMonochromator graduates into the catalog with this deployment: it becomes a catalog Family that both SIX and CSX bind, with the grating line density and energy range carried as a per-Asset settings difference (the InsertionDevice / Monochromator precedent), not a Family split. The SIX deployment's references are swept from loose to graduated in the same change. The catalog Monochromator (a crystal / multilayer Bragg optic) is deliberately not stretched to cover the grating mono; they are distinct optics. Its naming-r3 review is done.

CSX also reinforces an existing abstraction rather than adding one: its TARDIS endstation is an in-vacuum hkl E6C diffractometer whose circles bind the catalog Goniometer Family and the composed Assembly(Diffractometer), a third hkl diffractometer after 4-ID and 8-ID (and the first in a soft X-ray, in-vacuum context). No new family is introduced.

Deliberately not here yet

• The fine piezo nanopositioner. CSX carries a piezo nanopositioner for sample / lens fine-positioning; it is deferred (it would fold to Hexapod or stay a loose nanopositioner family, an owner call at the point it is modelled).

• The reciprocal-space solver. The TARDIS hkl pseudo-axis is modelled as a PseudoAxis device; the inverse-kinematics partition rule is DIFF-2, deferred (as on 4-ID / 8-ID).

• The coherent / holography Method. CSX's defining coherence (the FastCCD coherent-scattering and holography) is carried as a beam-quality enabler and settings on the existing scattering Methods, not coined as its own Method; whether coherent soft X-ray scattering enters the catalog is an owner decision (TECH-1).

• The simulated devices and full asset-tree scenarios. No test_csx_*.py registers the CSX 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.

The 2-BM Model page shows the by-kind index a fully-modelled deployment carries.