Techniques¶
What the modelled part of P10 is designed to do, as intent. First cut.
A technique is a portable Catalog Method; a Practice is how a facility adapts it. P10's primary technique, XPCS, is a graduated catalog Method (earned at the APS 8-ID), so its practice binds it directly; the coherent-imaging techniques reuse pending slugs (TECH-1).
X-ray photon correlation spectroscopy¶
P10 illuminates the sample with a coherent beam and reads the speckle pattern on a high-frame-rate area detector (Lambda / Eiger); the intensity autocorrelation over time measures the sample dynamics.
| Technique | Catalog method | Notes |
|---|---|---|
| X-ray photon correlation spectroscopy (XPCS) | xpcs |
the coherent beam on the sample read by the high-frame-rate Lambda / Eiger, the correlation computed downstream; binds the graduated xpcs Method (earned at APS 8-ID), the second consumer |
Coherent diffraction imaging¶
P10's E1 endstation focuses the coherent beam (the CRL) and records coherent diffraction patterns (the Quadro / Eiger) for ptychographic / coherent-diffraction reconstruction.
| Technique | Catalog method | Notes |
|---|---|---|
| Coherent diffraction imaging / ptychography | ptychography |
the focused coherent beam scanned across the sample, the diffraction recorded for phase retrieval; reuses the pending ptychography slug, a further consumer (TECH-1) |
A graduated Method meets a new facility¶
P10 is a further XPCS beamline (after APS 8-ID and NSLS-II CHX). Unlike the other PETRA III beamlines (whose techniques are not yet earned and carry pending practices), P10's XPCS practice binds the graduated xpcs Method directly, reusing the abstraction the APS 8-ID deployment forced into the catalog. This is the reuse-earns-the-abstraction principle working as intended: a technique graduated at one facility carries cleanly to another on a different control plane. The coherent-imaging side reuses the pending ptychography slug; the instrument anatomy reuses existing Families (the CRL Transfocator, the hexapod Hexapod, the detector suite Camera).
Not modelled yet¶
The concrete acquisition recipes (the XPCS multi-tau / correlation sequences, the ptychographic scan trajectories, the coherent-diffraction exposures) are not written yet; they join as the deployment approaches the point where CORA drives P10. Whether ptychography enters CORA's catalog is an owner-scope decision on Model; see Open questions for the world-facts to confirm first.