Computer Science – Performance
Scientific paper
Feb 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987rsci...58..167c&link_type=abstract
Review of Scientific Instruments (ISSN 0034-6748), vol. 58, Feb. 1987, p. 167-173.
Computer Science
Performance
3
Astronomical Spectroscopy, Charge Coupled Devices, Image Processing, Imaging Spectrometers, Photonics, Signal To Noise Ratios, Image Resolution, Microchannel Plates, Optical Measuring Instruments, Photocathodes, Signal Processing
Scientific paper
The paper describes the design and development of a large format 40-mm active diameter imaging photon detector. The design comprises an S20 semitransparent photocathode proximity focused onto a stack of two microchannel plates clamped back to back having channel length to diameter ratios of 80:1. Event readout is facilitated by a circular arc terminated resistive anode. The theoretical performance of the design is discussed with reference to gain measurements of the microchannel plates. Experimental results give an optimum position resolution of 100 microns which is spatially nonuniform and degrades towards the edge of the imaging field. The role of signal processing in this nonuniformity is discussed, and design modifications which would achieve optimum imaging performance are described.
Clampin Marc
Edwin R. P.
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