Detector

Detection

The incident-flux and beam-position monitors that measure the delivered dose. There is no scattering, area, or imaging detector: the footprinting structural readout is done offline by mass spectrometry.

Enclosure: xfp-endstation.

Note

XFP has no Detector-role imaging device. The flux it delivers is the measurement that matters: the QuadEM electrometers bind FluxMonitor (incident flux plus a time-series trace to compute the delivered dose, with a diode array-logger as a further dose accumulator); the Sydor four-channel monitor binds the graduated PositionMonitor Family (beam position plus a sum-current flux readback, DIAG-1). The footprinting structural readout (which residues were modified) is OFFLINE mass spectrometry, downstream of the beamline and absent from the profile collection; what the beamline produces is a footprinted sample plus a dose record (READOUT-1, DET-1).

Name	Family	PV	Key specs	Replaceable	Status
FluxMonitor	FluxMonitor	XF:17BM-BI{EM:1}EM180:	the primary QuadEM electrometer reading incident flux and a per-exposure time-series, the basis for the delivered dose; a DIODE PDM array-logger (XF:17BMA-CT{DIODE-PDM:1}) accumulates the dose array and a second electrometer (XF:17BM-BI{EM:2}) adds channels; the flux-to-absorbed-dose calibration lives in offline analysis (DET-1, DOSE-1, READOUT-1)		new confirm
BeamPositionMonitor	PositionMonitor	XF:17BM-BI{EM:BPM1}	the Sydor four-channel beam-position monitor (per-quadrant currents, beam x / y, and a sum-current total-flux readback); binds the graduated PositionMonitor Family (DIAG-1); the position-vs-intensity split is DIAG-1		new confirm