TY - GEN
T1 - Imaging and spectral performance of cdte double-sided strip detectors for the hard x-ray imager onboard ASTRO-H
AU - Hagino, Kouichi
AU - Odaka, Hirokazu
AU - Sato, Goro
AU - Watanabe, Shin
AU - Takeda, Shin'ichiro
AU - Kokubun, Motohide
AU - Fukuyama, Taro
AU - Saito, Shinya
AU - Sato, Tamotsu
AU - Ichinohe, Yuto
AU - Takahashi, Tadayuki
AU - Nakano, Toshio
AU - Nakazawa, Kazuhiro
AU - Makishima, Kazuo
AU - Tajima, Hiroyasu
AU - Tanaka, Takaaki
AU - Ishibashi, Kazunori
AU - Miyazawa, Takuya
AU - Sakai, Michito
AU - Sakanobe, Karin
AU - Kato, Hiroyoshi
AU - Takizawa, Shunya
AU - Uesugi, Kentaro
PY - 2012
Y1 - 2012
N2 - The imaging and spectral performance of CdTe double-sided strip detectors (CdTe-DSDs) was evaluated for the ASTRO-H mission. The charcterized CdTe-DSDs have a strip pitch of 0.25 mm, an imaging area of 3.2 cm×3.2 cm and a thickness of 0.75 mm. The detector was successfully operated at a temperature of -20°C and with an applied bias voltage of 250 V. By using two-strip events as well as one-strip events for the event reconstruction, a good energy resolution of 2.0 keV at 59.5 keV and a sub-strip spatial resolution was achieved. The hard X-ray and gamma-ray response of CdTe-DSDs is complex due to the properties of CdTe and the small pixel effect. Therefore, one of the issues to investigate is the response of the CdTe-DSD. In order to investigate the spatial dependence of the detector response, we performed fine beam scan experiments at SPring-8, a synchrotron radiation facility. From these experiments, the depth structure of the electric field was determined as well as properties of carriers in the detector and successfully reproduced the experimental data with simulated spectra.
AB - The imaging and spectral performance of CdTe double-sided strip detectors (CdTe-DSDs) was evaluated for the ASTRO-H mission. The charcterized CdTe-DSDs have a strip pitch of 0.25 mm, an imaging area of 3.2 cm×3.2 cm and a thickness of 0.75 mm. The detector was successfully operated at a temperature of -20°C and with an applied bias voltage of 250 V. By using two-strip events as well as one-strip events for the event reconstruction, a good energy resolution of 2.0 keV at 59.5 keV and a sub-strip spatial resolution was achieved. The hard X-ray and gamma-ray response of CdTe-DSDs is complex due to the properties of CdTe and the small pixel effect. Therefore, one of the issues to investigate is the response of the CdTe-DSD. In order to investigate the spatial dependence of the detector response, we performed fine beam scan experiments at SPring-8, a synchrotron radiation facility. From these experiments, the depth structure of the electric field was determined as well as properties of carriers in the detector and successfully reproduced the experimental data with simulated spectra.
KW - ASTRO-H mission
KW - CdTe detector
KW - Double-sided strip detector
KW - Hard X-ray Imager
KW - X-ray/ray astrophysics
UR - http://www.scopus.com/inward/record.url?scp=84871754322&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84871754322&partnerID=8YFLogxK
U2 - 10.1117/12.926052
DO - 10.1117/12.926052
M3 - Conference contribution
AN - SCOPUS:84871754322
SN - 9780819491442
VL - 8443
BT - Proceedings of SPIE - The International Society for Optical Engineering
T2 - Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray
Y2 - 1 July 2012 through 6 July 2012
ER -