Detector¶
The energy-dispersive RIXS spectrometer arm, its photon-counting camera, and the counting electronics. First cut; PVs read from the profile collection, carried confirm.
RIXS detection is the signature of SIX: a meters-long energy-dispersive spectrometer arm collects the scattered soft X-rays, disperses them by energy, and spreads the spectrum onto a photon-counting camera at the end of the arm, while counting electronics read the incident and drain currents. They are modelled in the detection stage of the descriptor.
The spectrometer arm binds a loose SpectrometerArm Family (no catalog Family fits a multi-chamber dispersive arm; the catalog EnergyDispersiveSpectrometer is a point Sensor, see Model); the camera reuses the catalog Camera Family and the counters FluxMonitor.
Detection chain¶
| Device | Family | Design spec / note |
|---|---|---|
RIXSSpectrometer |
SpectrometerArm (loose) |
energy-dispersive arm: bridge truss (BT:1) + optics chamber (3AA:1) + detector chamber (DC:1); the arm angle selects momentum transfer (RIXS-1) |
RIXSCamera |
Camera |
photon-counting RIXS camera with on-detector centroiding and isolinear curvature correction; Family decision is RIXS-2 (DET-1) |
DetectorSlit |
Slit |
detector-chamber baffle slit (OPT-2) |
Scaler / Electrometer |
FluxMonitor |
counting scaler + Femto transimpedance electrometer for the I0 / drain channels (DET-1) |
The arm is three coupled chambers: the bridge truss carries it, the optics chamber holds the dispersing element (its 2T is the dispersion arm), and the detector chamber positions the camera (its 2T and Z set the detector angle and distance). The full chamber geometry, and whether the arm composes into an Assembly, is RIXS-1.
Families¶
Reused from the catalog: Camera (the RIXS camera), Slit (the detector slit), and FluxMonitor (the scaler and electrometer). New at n=1: the SpectrometerArm Family for the dispersive arm, held loose until a second RIXS / dispersive-arm beamline earns it. Whether the photon-counting camera warrants its own Family (versus Camera with settings) is RIXS-2; the channel map is DET-1. See Inventory for the Asset tree.