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22 July 2008 Radiation study of swept-charge devices for the Chandrayaan-1 X-ray Spectrometer (C1XS) instrument
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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.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. Gow, D. R. Smith, A. D. Holland, B. Maddison, C. Howe, M. Grande, P. Sreekumar, and J. Huovelin "Radiation study of swept-charge devices for the Chandrayaan-1 X-ray Spectrometer (C1XS) instrument", Proc. SPIE 7021, High Energy, Optical, and Infrared Detectors for Astronomy III, 70211A (22 July 2008);

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