Proceedings Article10.1117/12.312891
Position-sensitive CZT detector module
James L. Matteson,Fred Duttweiller,George L. Huszar,Philippe Leblanc,Robert T. Skelton,Edwin A. Stephan,Paul L. Hink,P. F. Dowkontt,Kimberly R. Slavis,Tumay O. Tumer,Scott D. Kravis +10 more
- 01 Jul 1998
- Vol. 3446, pp 192-201
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TL;DR: In this paper, a coded mask imagers with crossed-strip readout was developed for high-energy x-ray astronomy missions with large area arrays and high live-area factors.
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Abstract: Coded mask imagers for future high energy x-ray astronomy missions will require detector planes with areas of hundreds to thousands of cm2 and position resolutions < 1 mm. Such detectors will enable coded mask imagers to discover and study thousands of high energy x-ray sources. The UCSD/WU/UCR/NOVA collaboration has been developing CZT detector systems with crossed-strip readout to meet these requirements. We report progress on a compact detector module with 41 cm2 area and 0.5 mm spatial resolution. The design includes the bias network and ASIC readout electronics, and allows modules to be combined in large area arrays with very high live-area factors. Results from laboratory and balloon flight tests are presented.© (1998) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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Citations
Recent progress in CdTe and CdZnTe detectors
Tadayuki Takahashi,Shin Watanabe +1 more
TL;DR: In this paper, the advantages and disadvantages of CdTe and CdZnTe semiconductor detectors are summarized and the technique for improving energy resolution and photopeak efficiencies is discussed.
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Integrated circuit and sensor for imaging
Tumay O. Tumer,Martin Clajus,Robert F. Calderwood,Gerard Visser +3 more
- 05 Mar 2003
TL;DR: In this paper, the authors present a multi-channel integrated circuit with both solid state and scintillator detectors for two-dimensional and three-dimensional medical and industrial imaging.
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X-ray and gamma ray detector readout system
Tumay O. Tumer,Martin Clajus,Gerard Visser +2 more
- 08 Nov 2002
TL;DR: In this paper, a transimpedance preamplifier and discriminator for high resolution PET imagers based on LSO (lutetium ortho-oxysilicate, Lu 2 SiO 5 ) scintillator and avalanche photodiode (APD) arrays is presented.
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Patent
Multi-channel integrated circuit
Tumay O. Tumer,Gerard Visser +1 more
- 18 Feb 2004
TL;DR: In this article, a multi-channel integrated circuit is provided in which each channel has an analog section and a digital section, each channel employs low noise charge sensitive amplifier at its input followed by other circuitry such as shaper, pole zero, peak hold, different comparators, buffers and digital control and readout.
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Three-dimensional imaging and detection efficiency performance of orthogonal coplanar CZT strip detectors
Mark L. McConnell,John R. Macri,James M. Ryan,K. Larson,Louis-Andre Hamel,G. Bernard,C. Pomerleau,O. Tousignant,Jean-Charles Leroux,Valentin T. Jordanov +9 more
- 21 Nov 2000
TL;DR: In this paper, the authors report on recent three-dimensional imaging performance and detection efficiency measurements obtained with 5 mm thick prototype CdZnTe detectors fabricated with orthogonal coplanar anode strips.
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Performance of CdZnTe coplanar-grid gamma-ray detectors
Paul N. Luke,E.E. Eissler +1 more
TL;DR: In this article, the spectral performance of coplanar grid detectors using currently available CdZnTe materials is examined theoretically and experimentally, and it is shown that energy resolution close to the charge-statistics limit can be achieved.
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TL;DR: In this article, a discussion of the effects of electrode geometry on charge signal generation and energy resolution is presented, and various electrode configurations including spherical, coaxial, pixel, strip and coplanar-grid are examined in theoretical terms to evaluate their effectiveness and limitations.
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Mark Amman,Paul N. Luke +1 more
- 01 Apr 1997
TL;DR: In this article, a variation of the coplanar-grid method is presented, where the signal from only one grid electrode is read out, and the signal response is optimized by changing the relative areas of the two grid electrodes and the bias applied across the detector.
CdZnTe background measurements at balloon altitudes
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- 18 Oct 1996
TL;DR: In this paper, preliminary results from the first CdZnTe background measurements made by a balloon instrument are presented and contributions from different background processes are discussed, which are essential to determine which physical processes make the most important background contributions and are critical in the design of future scientific instruments.
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