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Proceedings Paper

SAX Low-Energy Gas Scintillation Proportional Counter (LE-GSPC): calibration and system performance
Author(s): Didier D. E. Martin; Marcos Bavdaz; Anthony J. Peacock; Giuseppe Vacanti; Arvind N. Parmar
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Paper Abstract

The low energy gas scintillation proportional counter (LE-GSPC) is an imaging x-ray spectrometer. It is one of the narrow field instruments on board the SAX satellite and covers the lower energy range from 0.1 to 10 keV. The low energy response of the detector is achieved by using a driftless gas cell and a thin multilayer polyimide foil as entrance window. The overall design of the imaging GSPC for space application is described. Using unit level and system level calibration data, acquired at a synchrotron and a long beam x-ray source, the capabilities both in terms of energy and position resolution are discussed. The overall efficiency of the instrument which includes the mirror's effective area, the entrance windows' transparencies, the detector's efficiency and electronics deadtime are reviewed. Background rejection issues and the experiment's consequent sensitivity to the measurement of cosmic x- ray source spectra are addressed.

Paper Details

Date Published: 16 October 1995
PDF: 14 pages
Proc. SPIE 2517, X-Ray and EUV/FUV Spectroscopy and Polarimetry, (16 October 1995); doi: 10.1117/12.224911
Show Author Affiliations
Didier D. E. Martin, European Space Agency/ESTEC (Netherlands)
Marcos Bavdaz, European Space Agency/ESTEC (Netherlands)
Anthony J. Peacock, European Space Agency/ESTEC (Netherlands)
Giuseppe Vacanti, European Space Agency/ESTEC (Netherlands)
Arvind N. Parmar, European Space Agency/ESTEC (Netherlands)

Published in SPIE Proceedings Vol. 2517:
X-Ray and EUV/FUV Spectroscopy and Polarimetry
Silvano Fineschi, Editor(s)

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