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Development of a cadmium telluride pixel detector for astrophysical applications

Miyasaka, Hiromasa and Harrison, Fiona A. and Cook, Walter R. and Mao, Peter H. and Rana, Vikram R. and Ishikawa, Shin-nosuke and Ushio, Masayoshi and Aono, Hiroyuki and Watanabe, Shin and Sato, Goro and Kokubun, Motohide and Takahashi, Tadayuki (2009) Development of a cadmium telluride pixel detector for astrophysical applications. In: UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVI. Proceedings of SPIE. No.7435. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, Art. No. 74350Q.

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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).

Item Type:Book Section
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URLURL TypeDescription
Miyasaka, Hiromasa0000-0002-8074-4186
Harrison, Fiona A.0000-0003-2992-8024
Rana, Vikram R.0000-0003-1703-8796
Additional Information:© 2009 SPIE.
Group:Space Radiation Laboratory
Subject Keywords:hard X-ray astrophysics, CdTe, anode pixelated detector, ASIC, International X-ray Observatory
Series Name:Proceedings of SPIE
Issue or Number:7435
Record Number:CaltechAUTHORS:20180109-103218910
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Official Citation: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, "Development of a cadmium telluride pixel detector for astrophysical applications", Proc. SPIE 7435, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVI, 74350Q (21 August 2009); doi: 10.1117/12.825711;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84188
Deposited By: Tony Diaz
Deposited On:09 Jan 2018 18:59
Last Modified:15 Nov 2021 20:17

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