Techniques¶
What the modelled part of P02 is designed to do, as intent. First cut.
A technique is a portable Catalog Method; a Practice is how a facility adapts it. P02's diffraction techniques reuse Methods the fleet already carries pending, so the Methods below render unlinked until a technique enters scope (TECH-1).
Powder diffraction (P02.1)¶
P02.1 illuminates a powder / polycrystalline sample with a high-energy (~60 keV) monochromatic beam and reads the Debye-Scherrer rings on the Pilatus 1M area detector, with in-situ temperature control for parametric studies.
| Technique | Catalog method | Notes |
|---|---|---|
| High-energy powder diffraction | powder_diffraction |
the powder sample read by the Pilatus 1M; reuses the powder_diffraction slug i11 / XPD share, a further consumer (TECH-1) |
Total scattering / PDF (P02.1)¶
P02.1 also collects total scattering to high momentum transfer (the high-energy beam plus the PerkinElmer flat-panel) for pair-distribution-function analysis of local / disordered structure.
| Technique | Catalog method | Notes |
|---|---|---|
| Total scattering / pair-distribution-function | total_scattering |
high-Q total scattering on the PerkinElmer flat-panel; reuses the total_scattering slug i15-1 / XPD share, a further consumer (TECH-1) |
High-pressure diffraction (P02.2)¶
P02.2 puts the sample in a diamond-anvil cell and collects diffraction under high pressure (and variable temperature), for extreme-conditions studies.
| Technique | Catalog method | Notes |
|---|---|---|
| Diamond-anvil-cell high-pressure diffraction | powder_diffraction |
high-pressure diffraction in the DAC; reuses the powder_diffraction slug, a further consumer (TECH-1, PRESSURE-1) |
A high-energy diffraction beamline on familiar vocabulary¶
P02 is the fleet's high-energy powder / total-scattering beamline and its first diamond-anvil-cell extreme-conditions endstation. Its techniques reuse the powder_diffraction and total_scattering slugs already carried pending across the fleet (Diamond i11 / i15-1, NSLS-II XPD), so none forces a new Method now. The instrument anatomy reuses existing Families end to end: the monochromator binds Monochromator, the bendable mirrors Mirror, the detectors Camera, the sample environment TemperatureController, and the high-pressure cell the catalog PressureCell (graduated across 13-id and P02, with P02 the second consumer that earned it).
Not modelled yet¶
The concrete acquisition recipes (the powder-ring integration sequences, the high-Q PDF collection, the pressure-ramp diffraction loops) are not written yet; they join as the deployment approaches the point where CORA drives P02. Whether the diffraction Methods or the PressureCell Family enter CORA's catalog is an owner-scope decision on Model; see Open questions for the world-facts to confirm first.