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Proceedings Paper

Performance of microstrip proportional counters for x-ray astronomy on spectrum-roentgen-gamma
Author(s): Carl Budtz-Joergensen; Axel Bahnsen; Finn Erland Christensen; M. Mohl Madsen; C. Olesen; Herbert W. Schnopper
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Paper Abstract

DSRI will provide a set of four imaging proportional counters for the Danish-Soviet X-ray telescopes XSPECT/SODART. The sensor principle is based on the novel micro-strip proportional counter (MSPC), where the strip electrodes are deposited by photolithography onto a rigid substrate. The MSPC offers many advantages : A uniform gas gain, an excellent energy resolution, the possibility to match the strip pitch to the desired positron resolution, a fast charge collection and low operating voltages. However, a stable behaviour of the MSPC requires a careful choice of both substrate and strip electrode material. The low energy detectors will be equipped with polyimide windows of 0.5 pm thickness, providing a high quantum efficiency even at 200 eV with an energy resolution comparable to that of solid state detectors. The MSPC is capable of operating at high counting rates (iO ph s1) and the electronics is designed to match this capability.

Paper Details

Date Published: 1 October 1991
PDF: 9 pages
Proc. SPIE 1549, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy II, (1 October 1991); doi: 10.1117/12.48360
Show Author Affiliations
Carl Budtz-Joergensen, Danish Space Research Institute (Denmark)
Axel Bahnsen, Danish Space Research Institute (Denmark)
Finn Erland Christensen, Danish Space Research Institute (Denmark)
M. Mohl Madsen, Danish Space Research Institute (Denmark)
C. Olesen, Danish Space Research Institute (Denmark)
Herbert W. Schnopper, Danish Space Research Institute (United States)

Published in SPIE Proceedings Vol. 1549:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy II
Oswald H. W. Siegmund; Richard E. Rothschild, Editor(s)

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