Abstract
The low energy proportional counter LEPC (0.2–8 keV) and the high energy proportional counter HEPC (2–25 keV) for the Danish-Russian X-ray telescopes XSPECT/SODART are presently being tested at DSRI. The sensor principle of these detectors is based on the novel microstrip proportional counter (MSPC) where the strip electrodes are deposited by photolithography onto a rigid substrate. The MSPC offers many advantages: a uniform gas gain, excellent energy (∼ 13% at 6 keV) and position-resolutions (⪡ 1 mm), a fast charge collection and a low operating voltage. The energy response, imaging and background rejection performance of LEPC (82 × 82 mm) and HEPC ( Ø= 160 mm) will be discussed. The presentation will also include first results obtained with a high energy (∼ 150 keV) MSPC which is planned as a candidate for the X-ray monitor for the International Gamma-Ray Astrophysical Laboratory (INTEGRAL).
Published Version
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