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. https://resolver.caltech.edu/CaltechAUTHORS:20180109-103218910
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Abstract
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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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 | ||||||||
DOI: | 10.1117/12.825711 | ||||||||
Record Number: | CaltechAUTHORS:20180109-103218910 | ||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20180109-103218910 | ||||||||
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; http://dx.doi.org/10.1117/12.825711 | ||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||
ID Code: | 84188 | ||||||||
Collection: | CaltechAUTHORS | ||||||||
Deposited By: | Tony Diaz | ||||||||
Deposited On: | 09 Jan 2018 18:59 | ||||||||
Last Modified: | 15 Nov 2021 20:17 |
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