19-BM-FACT¶
Planned filtered white-beam bending-magnet CT beamline at APS Sector 19, built for high-throughput autonomous tomography with robotic sample handling. This page walks the beamline as it is designed; everything here is a Final Design Report specification, not a commissioned measurement.
| Property | Value |
|---|---|
| Asset | 19-BM (root Asset, tier = Unit, parent_id = None) |
| Facility | APS (bound via facility_code = "aps", FacilityKind = Site), Sector 19 |
| Status | In design (Final Design Report, 6 June 2026); first light targeted 2026-3 cycle |
| Source | APS bending magnet (M3); filtered white beam only, no monochromator |
| Control stack | EPICS (APS standard); PV names to be assigned |
Design phase
19-BM-FACT was under construction when the FDR was written. Every value on these pages is a design specification, carried as confirm until the beamline team verifies it. The things CORA still needs the team to confirm are collected on Open questions.
The beamline¶
19-BM-FACT is a sibling of the operational 2-BM: both are APS bending-magnet, indirect-detection, micron-CT beamlines. 19-BM differs in three ways that shape the model: it is filtered white-beam only (no monochromator or mirror optics, so the spectrum is set by filter selection), it runs in three enclosures (a front-end optics enclosure, a pure shielded transport, and the endstation), and it is built for autonomous high-throughput operation with a robotic sample changer.
Along the beam, in order:
- Source: the bending-magnet beam delivery and conditioning in 19-BM-A (the exit Be window and mask, the bremsstrahlung collimators, the white-beam slits, the F3-30 filter unit, and the vacuum isolation), rendered as the generated source-stage device walk.
- Sample: the in-air endstation in 19-BM-D, where the beam transitions through a water-cooled Be window and a Kapton window to the sample stage that hosts the robotic sample changer.
- Detector: the indirect-detection imaging system (scintillator, microscope optics, camera) and the downstream beam stops.
Cutting across all three:
- Controls: the EPICS control stack and the high-throughput trigger scheme.
The cross-cutting reference view is the Inventory: the planned Asset tree by parent_id with families and the values still pending confirmation. The Source page is generated from the beamline.yaml descriptor.
Techniques¶
Techniques: what 19-BM is designed to do, as design intent. Each is a portable Catalog Method that an APS Practice adapts once the beamline is operating.
Governance¶
Governance: who will act at 19-BM and the trust shape that gates their commands. People and agents are facility principals at the APS Site; autonomy is first-class here, so this is the deployment where CORA's supervisory agents are intended to go operational.
Model¶
Model: the developer's by-kind index into where each CORA aggregate's 19-BM content lives.
Not yet documented¶
19-BM is pre-build, so the operations runbook (procedures, recipes, cautions) and the live experiment view are deliberately not written yet: a runbook for an unbuilt beamline would be invention, not record. They join these pages as the beamline approaches commissioning. The 2-BM deployment shows the shape they will take.