Development of uniform CdTe pixel detectors based on Caltech ASIC

Kousuke Oonuki; Hokuto Inoue; Kazuhiro Nakazawa; Takefumi Mitani; Takaaki Tanaka; Tadayuki Takahashi; C. M. Hubert Chen; Walter R. Cook; Fiona A. Harrison

doi:10.1117/12.552598

29 September 2004 Development of uniform CdTe pixel detectors based on Caltech ASIC

Kousuke Oonuki, Hokuto Inoue, Kazuhiro Nakazawa, Takefumi Mitani, Takaaki Tanaka, Tadayuki Takahashi, C. M. Hubert Chen, Walter R. Cook, Fiona A. Harrison

Author Affiliations +

Proceedings Volume 5501, High-Energy Detectors in Astronomy; (2004) https://doi.org/10.1117/12.552598
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

We have developed a large CdTe pixel detector with dimensions of 23.7 x 13.0 mm² and a pixel size of 448 x 448 μm². The detector is based on recent technologies of an uniform CdTe single crystal, a two-dimensional ASIC, and stud bump-bonding to connect pixel electrodes on the CdTe surface to the ASIC. Good spectra are obtained from 1051 pixels out of total 1056 pixels. When we operate the detector at -50°C, the energy resolution is 0.67 keV and 0.99 keV at 14 keV and 60 keV, respectively. Week-long stability of the detector is confirmed at operating temperatures of both -50°C and -20°C. The detector also shows high uniformity: the peak positions for all pixels agree to within 0.82%, and the average of the energy resolution is 1.04 keV at a temperature of -50°C. When we normalized the peak area by the total counts detected by each pixel, a variation of 2.1% is obtained.

Citation Download Citation

Kousuke Oonuki, Hokuto Inoue, Kazuhiro Nakazawa, Takefumi Mitani, Takaaki Tanaka, Tadayuki Takahashi, C. M. Hubert Chen, Walter R. Cook, and Fiona A. Harrison "Development of uniform CdTe pixel detectors based on Caltech ASIC", Proc. SPIE 5501, High-Energy Detectors in Astronomy, (29 September 2004); https://doi.org/10.1117/12.552598

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available