High efficiency photon counting detectors for the FAUST Spacelab far ultraviolet astronomy payload

Details High efficiency photon counting detectors for the FAUST Spacelab far ultraviolet astronomy payload High efficiency photon counting detectors for the FAUST Spacelab far ultraviolet astronomy payload

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987itns...34...41s&link_type=abstract

(IEEE, NASA, DOE, et al., 1986 Nuclear Science Symposium, 33rd, and 1986 Symposium on Nuclear Power Systems, 18th, Washington, D

Astronomy and Astrophysics

Astronomy

9

Imaging Techniques, Microchannel Plates, Radiation Detectors, Spacelab Payloads, Ultraviolet Astronomy, Cesium Iodides, Far Ultraviolet Radiation, Point Spread Functions, Quantum Efficiency, Spatial Resolution

Scientific paper

The performances of sealed tube microchannel-plate position sensitive detectors having transmission CsI photocathodes or opaque CsI photocathodes are compared. These devices were developed for the FAUST Spacelab payload to accomplish imaging surveys in the band between 1300 A and 1800 A. It is demonstrated that photocathode quantum efficiencies in excess of 40 percent at 1216 A have been achieved with the transmission and the opaque CsI photocathodes. The effect of the photoelectron trajectory on the spatial resolution is assessed. Spatial resolution of less than 70 microns FWHM has been obtained and is maintained up to event rates of 50,000/sec. Background rates of 0.55 events sq cm per sec have been achieved and low distortion (less than 1 percent) imaging has been demonstrated.

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