Detector¶
The hemispherical electron energy analyzer and the beam-current flux monitors. First cut; PVs read from the profile collection, carried confirm.
ESM detection is photoemission: the Scienta SES hemispherical electron energy analyzer collects the photoelectrons and disperses them by kinetic energy and emission angle, while the QuadEM electrometers read the incident-beam current. They are modelled in the detection stage of the descriptor.
The analyzer binds the ElectronAnalyzer Family (graduated across ESM + SST; no photon-detector Family fits an electron spectrometer; see Model); the flux monitors reuse the catalog FluxMonitor.
Detection chain¶
| Device | Family | Design spec / note |
|---|---|---|
ElectronAnalyzer |
ElectronAnalyzer |
Scienta SES hemispherical analyzer; pass-energy / lens-mode / kinetic-energy-window controls; the ARPES detector (ARPES-1) |
FluxMonitor_Upstream / FluxMonitor_Branch |
FluxMonitor |
QuadEM electrometers (qem01-12); I0 / drain-current monitors (DET-1) |
The analyzer is the defining instrument of the beamline: it measures electrons, not photons, so it sat outside the photon-detector families CORA had (Camera, EnergyDispersiveSpectrometer, FluxMonitor). ESM introduced the ElectronAnalyzer Family for it, and it graduated into the catalog once SST (NSLS-II 7-ID HAXPES) earned the second Scienta SES; a future ESM XPEEM branch would reinforce it. Its lens modes, pass energies, and acquisition modes are ARPES-1.
Families¶
ElectronAnalyzer for the SES (graduated across ESM + SST). Reused from the catalog: FluxMonitor for the QuadEM monitors. The flux-monitor channel map is DET-1. See Inventory for the Asset tree.