Development of a cadmium telluride pixel detector for astrophysical applications

Hiromasa Miyasaka*, Fiona A. Harrison, Walter R. Cook, Peter H. Mao, Vikram R. Rana, Shin Nosuke Ishikawa, Masayoshi Ushio, Hiroyuki Aono, Shin Watanabe, Goro Sato, Motohide Kokubun, Tadayuki Takahashi

*この研究の対応する著者

研究成果

5 被引用数 (Scopus)

抄録

We are developing imaging Cadmium Telluride (CdTe) pixel detectors optimized for astrophysical hard X-ray applications. Our hybrid detector consist of a CdTe crystal 1mm thick and 2cm × 2cm in area with segmented anode contacts directly bonded to a custom low-noise application specific integrated circuit (ASIC). The CdTe sensor, fabricated by ACRORAD (Okinawa, Japan), has Schottky blocking contacts on a 605 micron pitch in a 32 × 32 array, providing low leakage current and enabling readout of the anode side. The detector is bonded using epoxy-gold stud interconnects to a custom low noise, low power ASIC circuit developed by Caltech's Space Radiation Laboratory. We have achieved very good energy resolution over a wide energy range (0.62keV FWHM @ 60keV, 10.8keV FWHM @ 662keV). We observe polarization effects at room temperature, but they are suppressed if we operate the detector at or below 0°C degree. These detectors have potential application for future missions such as the International X-ray Observatory (IXO).

本文言語English
ホスト出版物のタイトルProceedings of SPIE - The International Society for Optical Engineering
7435
DOI
出版ステータスPublished - 2009
イベントUV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVI - San Diego, CA
継続期間: 2009 8 32009 8 3

Other

OtherUV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVI
CitySan Diego, CA
Period09/8/309/8/3

ASJC Scopus subject areas

  • 応用数学
  • コンピュータ サイエンスの応用
  • 電子工学および電気工学
  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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