Development of Double-Sided CdTe Strip Detectors for $\gamma$-Ray Imaging and Spectroscopy
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概要
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By reading out both anode and cathode strips, double-sided CdTe strip detectors can achieve a large area and a high position resolution with few readout channels, which makes them very attractive for X-ray and $\gamma$-ray imaging and spectroscopy. We have developed double-sided CdTe strip detectors, $1.28 \times 1.28$ cm2 in size and 0.5 and 2.0 mm in thickness. Both electrodes are divided into 32 orthogonal strips with a pitch of 400 μm. For a detector of 0.5 mm thickness, the energy resolution was measured to be 1.5 keV (FWHM) at 60 keV. For the 2.0-mm-thick detector, an energy resolution of 8.0 keV (FWHM) at 662 keV was obtained using only the anode signal. By combining both the anode and cathode signals, we successfully improved the spectral performance and measured an energy resolution of 5.9 keV (FWHM) at 662 keV.
- 2010-11-25
著者
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KOKUBUN Motohide
Institute of Space and Astronautical Science
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WATANABE Shin
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS/JAXA)
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Nakazawa Kazuhiro
Department Of Physics The University Of Tokyo
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Tanaka Takaaki
Kavli Institute For Particle Astrophysics And Cosmology Stanford University
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SATO Goro
Institute of Space and Astronautical Science (ISAS/JAXA)
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Takahashi Tadayuki
Institute Of Space And Astronautical Science Japan Aerospace Exploration Agency
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Kokubun Motohide
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
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Ishikawa Shin-nosuke
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
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Ishikawa Shin-nosuke
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan
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Fukuyama Taro
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
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Odaka Hirokazu
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
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Saito Shinya
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
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Odaka Hirokazu
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan
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TAKAHASHI Tadayuki
Institute of Space and Astronautical Science (ISAS), JAXA:Department of Physics, The University of Tokyo
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Takahashi Tadayuki
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
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WATANABE Shin
Institute of Space and Astronautical Science (ISAS), JAXA
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Watanabe Shin
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
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Nakazawa Kazuhiro
Department of Physics, Graduate School of Science, University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
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TAKAHASHI Tadayuki
Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA)
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