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Proceedings Paper

Low-noise double-sided silicon strip detector for soft gamma-ray Compton camera
Author(s): Yasushi Fukazawa; Tatsuya Nakamoto; Naoyuki Sawamoto; Shingo Uno; Takashi Ohsugi; Hiroyasu Tajima; Tadayuki Takahashi; Takefumi Mitani; Takaaki Tanaka; Kazuhiro Nakazawa
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Paper Abstract

A Semiconductor Multiple-Compton Telescope (SMCT) is expected to proceed a high-sensitivity soft gamma-ray observation in the energy range of 0.1-20 MeV. Double-sided silicon strip detector (DSSD) is one of key technologies for constructing SMCT, as well as the high-stopping semiconductor CdTe, because of its high energy resolution and high scattering efficiency. We have developed a low-noise system of DSSD and frontend LSI for SMCT, by optimizing geometrical structures of DSSD. We have thus obtained an energy resolution of 1.3 keV (FWHM) for 60 keV and 122 keV at -10°C in the multi-channel reading. Gamma-ray responses such as image flatness and charge splittings were found to be not problematic. We also demonstrated that our system achieved the good angular resolution close to the Doppler-broadening limit in the Compton imaging by two DSSDs.

Paper Details

Date Published: 29 September 2004
PDF: 11 pages
Proc. SPIE 5501, High-Energy Detectors in Astronomy, (29 September 2004); doi: 10.1117/12.550764
Show Author Affiliations
Yasushi Fukazawa, Hiroshima Univ. (Japan)
Tatsuya Nakamoto, Hiroshima Univ. (Japan)
Naoyuki Sawamoto, Hiroshima Univ. (Japan)
Shingo Uno, Hiroshima Univ. (Japan)
Takashi Ohsugi, Hiroshima Univ. (Japan)
Hiroyasu Tajima, Stanford Linear Accelerator Ctr. (United States)
Tadayuki Takahashi, Institute of Space and Astronautical Science/JAXA (Japan)
Takefumi Mitani, Institute of Space and Astronautical Science/JAXA (Japan)
Takaaki Tanaka, Institute of Space and Astronautical Science/JAXA (Japan)
Kazuhiro Nakazawa, Institute of Space and Astronautical Science/JAXA (Japan)

Published in SPIE Proceedings Vol. 5501:
High-Energy Detectors in Astronomy
Andrew D. Holland, Editor(s)

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