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Proceedings Paper

Understanding and modeling glitch effects in ISOCAM and other future space telescopes
Author(s): Arnaud Claret; Koryo Okumura
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Paper Abstract

One of the main limitations to the sensitivity of photodetector operated in space comes from responsivity variations and glitches caused by the impacts of charged particles. An international glitch working group (GWG) was created in order to centralize information about these phenomena and prepare future space experiments. Results about the infrared camera ISOCAM on-board the Infrared Space Observatory (ISO) are presented here: - The presented glitch rate has been analytically evaluated and compared to in-flight measurements - The study of temporal and spatial properties of glitches has led to a classification into 3 distinct families. These families are related to the linear energy transfer (LET) of charged particles interacting with the detectors. - Removal of methods of glitch efforts are briefly addressed. - Monte Carlo simulations of radiatiaon effects have been made. Glitch rates, spatial and energetic properties of glitches have been computed. Monte-Carlo results are compared with measured values. - Perspectices and current studies for HERSCHEL are discussed.

Paper Details

Date Published: 5 March 2003
PDF: 12 pages
Proc. SPIE 4850, IR Space Telescopes and Instruments, (5 March 2003); doi: 10.1117/12.461490
Show Author Affiliations
Arnaud Claret, CEA Saclay (France)
Koryo Okumura, CEA Saclay (France)


Published in SPIE Proceedings Vol. 4850:
IR Space Telescopes and Instruments
John C. Mather, Editor(s)

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