29 September 2004 Low-noise double-sided silicon strip detector for soft gamma-ray Compton camera
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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.
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Yasushi Fukazawa, Tatsuya Nakamoto, Naoyuki Sawamoto, Shingo Uno, Takashi Ohsugi, Hiroyasu Tajima, Tadayuki Takahashi, Takefumi Mitani, Takaaki Tanaka, Kazuhiro Nakazawa, "Low-noise double-sided silicon strip detector for soft gamma-ray Compton camera", Proc. SPIE 5501, High-Energy Detectors in Astronomy, (29 September 2004); doi: 10.1117/12.550764; https://doi.org/10.1117/12.550764
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