Detector

Detector

The indirect-detection imaging system: a scintillator converts the transmitted X-ray image to visible light, visible-light microscope optics relay it, and a camera records 2-D projections that are reconstructed off-line into 3-D micron-resolution tomograms.

Enclosure: 19-BM-D.

Note

Specific scintillator, microscope-optics, and camera selections are procured after the FDR and are carried as questions (DET-1). The microscope composes the cross-facility Microscope Assembly (scintillator + optics + camera presenting the Detector Role), the same blueprint 2-BM uses; it is not a Family of its own.

Name	Family	PV	Key specs	Replaceable	Status
DetectorStage	Table		positions the indirect-detection system in air, downstream of the sample; axis layout TBD		new confirm
Scintillator	Scintillator		confirm: scintillator selection procured post-FDR (DET-1) converts the X-ray projection to a visible-light image		new confirm
Microscope	Housing		confirm: microscope-optics selection procured post-FDR (DET-1) the visible-light microscope chassis: a Housing that anchors the cross-facility Microscope Assembly (scintillator + optics + camera) presenting the Detector Role; the Fixture is registered once hardware is chosen		new confirm
Camera	Camera		confirm: camera selection procured post-FDR (DET-1) records 2-D projection images for off-line reconstruction		new confirm

Beam stops

The photon and bremsstrahlung stops at the downstream end of 19-BM-D, plus the extra downstream-wall shielding required for a white-beam BM station.

Enclosure: 19-BM-D.

Note

all RSS / safety elements at the downstream wall; the guillotines provide the APS TB-44 extra lead area.

Name	Family	PV	Key specs	Replaceable	Status
PhotonStop	BeamStop		passive sketch: A359-M100 material: water-cooled copper block cooling: water-cooled, in series with the upstream Be window; flow monitored by the BLEPS (BLEPS-1) absorbs the transmitted white beam after the sample / detector region		new confirm
BremsstrahlungStop	BeamStop		passive sketch: A359-K3 material: chevron stack of lead bricks absorbs bremsstrahlung behind the photon stop, at the downstream wall		new confirm
DownstreamGuillotines	Shielding		passive material: Pb, >= 12 mm thick each (two guillotines) movable PSS-grade shielding on the inside of the downstream wall; the 1 x 1 m2 extra-lead area required by APS TB-44; aligned in place (no internal fiducialisation). One is held open during operation, coupling 19-BM-C and 19-BM-D into one shielded volume (ENC-1)		new confirm