Experiment

CORA's Experiment model landing on FXI: the subjects, runs, campaigns, datasets, and decisions CORA would record for a beamtime. Described here as shape; CORA is not yet running FXI, so there are no live instances.

At an operating beamline this page is served by the running app from the live read-API. For FXI it describes what CORA's Experiment BC would capture.

Subjects

The specimen under study, recorded as a CORA Subject with its custody and history. The sample identity per run is carried on the Run.

Runs

A scan session is a CORA Run. CORA records the conduct (what was run, by whom, against which Assets) and the provenance, with terminal states Completed, Truncated, or Held. The Assets a Run snapshots at start and end are the source-stage and sample-stage devices in the Inventory (the beam delivery, the sample stage and rotary, the optics, and the detector).

Campaigns

A multi-run initiative. CORA maps this to the NSLS-II proposal and cycle (the facility's beamtime unit), so a proposal/cycle is one Campaign envelope over its Runs.

Datasets

The data of record. CORA records its own Dataset for each Run within its Experiment model; the data-of-record store is CORA's, not the facility's. The raw frames the detector produces land on the facility filestore (floor); CORA's transfer leg moves the frames from there over its TransferPort into the CORA Dataset and its lineage. CORA references where the frames physically sit; it does not depend on the facility's catalog as its own system of record.

Decisions

Provenance of the choices made during a beamtime: energy, technique, reconstruction parameters, and any alignment or center-finding outcome. For an autonomous or adaptive run, these are the agent's recorded inferences, governed by the trust boundary. FXI has no standing autonomous agent today, so this is the shape, not an instance.