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Proceedings Paper

Radiation study of swept-charge devices for the Chandrayaan-1 X-ray Spectrometer (C1XS) instrument
Author(s): J. Gow; D. R. Smith; A. D. Holland; B. Maddison; C. Howe; M. Grande; P. Sreekumar; J. Huovelin
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Paper Abstract

The Chandrayaan-1 X-ray Spectrometer (C1XS) will be launched as part of the Indian Space Research Organisation (ISRO) Chandrayaan-1 payload in September 2008, arriving at the Moon within 7 days to begin a two year mission in lunar orbit conducting mineralogical surface mapping over the range of 1 - 10 keV. The detector plane of the instrument consists of twenty four e2v technologies CCD54 swept-charge devices (SCDs). Such devices were first flown in the Demonstration of a Compact Imaging X-ray Spectrometer (D-CIXS) instrument onboard SMART-1 [4, 5]. The detector plane in each case provides a total X-ray collection area of 26.4 cm2. The SCD is capable of providing near Fano-limited spectroscopy at -10°C, and at -20°C, near the Chandrayaan-1 mission average temperature, it achieves a total system noise of 6.2 electrons r.m.s. and a FWHM of 134 eV at Mn-Kα. This paper presents a brief overview of the C1XS mission and a detailed study of the effects of proton irradiation on SCD operational performance.

Paper Details

Date Published: 22 July 2008
PDF: 12 pages
Proc. SPIE 7021, High Energy, Optical, and Infrared Detectors for Astronomy III, 70211A (22 July 2008); doi: 10.1117/12.791732
Show Author Affiliations
J. Gow, Brunel Univ. (United Kingdom)
D. R. Smith, Brunel Univ. (United Kingdom)
A. D. Holland, Planetary and Space Science Research Institute, The Open Univ. (United Kingdom)
B. Maddison, STFC Rutherford Appleton Lab. (United Kingdom)
C. Howe, STFC Rutherford Appleton Lab. (United Kingdom)
M. Grande, Univ. of Wales, Aberystwyth (United Kingdom)
P. Sreekumar, Indian Space Research Organisation (India)
J. Huovelin, Univ. of Helsinki (Finland)

Published in SPIE Proceedings Vol. 7021:
High Energy, Optical, and Infrared Detectors for Astronomy III
David A. Dorn; Andrew D. Holland, Editor(s)

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