Development of a Hybrid CdTe pixel detector with a low-noise front-end ASIC

Goro Sato*, Tetsuichi Kishishita, Hirokazu Ikeda, Takuto Sakumura, Tadayuki Takahashi

*この研究の対応する著者

研究成果

1 被引用数 (Scopus)

抄録

We have developed a prototype cadmium telluride (CdTe) pixel detector for future use in focusing hard X-ray telescopes. We adopted a hybrid configuration where each CdTe sensor pixel is vertically connected to a corresponding pixel cell fabricated in a readout ASIC. This configuration is suitable for detectors with high pixel density to reduce a stray capacitance between readout signal lines. The readout chip consists of a 12 x 12 matrix of identical 270 μm x 270 μm pixel cells, and was implemented with TSMC 0.35-μm CMOS technology. Each pixel cell contains a charge-sensitive amplifier, pole-zero cancellation circuit, low-pass filter, comparator, and peak/bottom-hold circuit. We succeeded to obtain detector signals from all the 144 channels, showing a equivalent noise charge distribution of 66±4 e- (rms). The linearity is maintained within ±1 % up to 3.5 fC, which corresponds to - 100 keV for CdTe. The detector exhibits good spectral performance with 870 eV (FWHM) at 59.5 keV. The power consumption is 150 μW per pixel, and 48 mW in total.

本文言語English
ホスト出版物のタイトルIEEE Nuclear Science Symposium Conference Record
ページ2207-2210
ページ数4
DOI
出版ステータスPublished - 2009
イベント2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009 - Orlando, FL
継続期間: 2009 10 252009 10 31

Other

Other2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009
CityOrlando, FL
Period09/10/2509/10/31

ASJC Scopus subject areas

  • 放射線
  • 核物理学および高エネルギー物理学
  • 放射線学、核医学およびイメージング

フィンガープリント

「Development of a Hybrid CdTe pixel detector with a low-noise front-end ASIC」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル