Detector

The large flat-panel area detectors for powder / PDF, the detector distance stage that sets the accessible Q, the flux counters, and the exposure shutter. PVs verified against startup/80-areadetector.py, 18-ion-chamber.py, 16-electrometer.py, 10-motors.py.

Enclosure: 28-ID-C.

Note

XPD's measurement is the diffraction pattern on a large flat-panel detector. For total scattering / PDF the detector sits close to reach high Q; the distance stage moves it, the PDF two-distance shape. All reuse existing families. Which panels are live versus the spare set is a staff question (DET-1).

Name	Family	PV	Key specs	Replaceable	Status
AreaDetector	Camera	XF:28IDC-ES:1{Det:PE1}	PerkinElmer flat-panel area detector (pe1, class XPDPerkinElmer; a second panel pe2 at Det:PE2, a third pe3 at the 28-ID-D endstation). The primary powder / PDF detector; reuses Camera.		confirm
DexelaDetector	Camera	XF:28IDC-ES:1{Det:DEX}	Dexela flat-panel detector (the Det:DEX namespace is real, but the device is defined-and-currently-commented-out in source, not a live panel); reuses Camera. Live status pending (DET-1).		confirm
DetectorStage	LinearStage	XF:28IDC-ES:1{Det:PE1-Ax:	Detector translation (pe1_x, pe1_z): the Z axis sets the sample-to-detector distance and hence the accessible Q-range, the close / far distances a PDF measurement uses. Reuses LinearStage.		confirm
IonChamber	FluxMonitor	XF:28IDC-BI{IC101}	Ion chamber (ion_chamber) measuring incident flux for normalization; reuses FluxMonitor (graduated #353).		confirm
QuadElectrometer	FluxMonitor	XF:28IDC-BI{IM:02}EM180:	Quad electrometer (qem1, NSLS-II QuadEM) reading I0 intensity (and a scaler em / sc); reuses FluxMonitor. Channel map pending (DIAG-1).		confirm
ExposureShutter	Shutter	XF:28IDC-ES:1{Sh:Exp}	Endstation exposure-shutter command signal (Sh:Exp, used by the area-detector multi-trigger and the beam suspender) gating the detector exposure; a separate motorized fast shutter (shctl1) sits on Sh2:Exp. Reuses the Shutter family.		confirm