High efficiency photon counting detectors for the FAUST Spacelab far ultraviolet astronomy payload
The authors compare the performance of sealed tube microchannel-plate position sensitive detectors having transmission CsI photocathodes or opaque CsI photocathodes. These devices were developed for the FAUST Spacelab payload to accomplish imaging surveys in the band between 1300A and 1800A. The authors demonstrate that photocathode quantum efficiencies in excess of 40% at 1216A 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 <70..mu..m FWHM has been obtained and is maintained up to event rates of 5x10/sup 4/ sec/sup -1/. Background rates of 0.55 events cm/sup -2/ sec/sup -1/ have been achieved and low distortion (<1%) imaging has been demonstrated.
- Research Organization:
- Space Sciences Lab., Univ. of California, Berkeley, CA 94720
- OSTI ID:
- 6660024
- Report Number(s):
- CONF-861007-
- Journal Information:
- IEEE Trans. Nucl. Sci.; (United States), Vol. NS-34:1; Conference: Nuclear science and nuclear power systems symposium, Washington, DC, USA, 29 Oct 1986
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
PHOTOELECTRON COUNTING
POSITION SENSITIVE DETECTORS
COMPARATIVE EVALUATIONS
PERFORMANCE TESTING
SPACE VEHICLES
CESIUM IODIDES
FAR ULTRAVIOLET RADIATION
IMAGE PROCESSING
PHOTOCATHODES
QUANTUM EFFICIENCY
SPATIAL RESOLUTION
TRAJECTORIES
WAVELENGTHS
ALKALI METAL COMPOUNDS
CATHODES
CESIUM COMPOUNDS
COUNTING TECHNIQUES
EFFICIENCY
ELECTRODES
ELECTROMAGNETIC RADIATION
HALIDES
HALOGEN COMPOUNDS
INORGANIC PHOSPHORS
IODIDES
IODINE COMPOUNDS
MEASURING INSTRUMENTS
PHOSPHORS
PROCESSING
RADIATION DETECTORS
RADIATIONS
RESOLUTION
TESTING
ULTRAVIOLET RADIATION
VEHICLES
440101* - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments
640101 - Astrophysics & Cosmology- Cosmic Radiation