Construction and testing of a pixellated CZT detector and shield for a hard x-ray astronomy balloon flight

  title={Construction and testing of a pixellated CZT detector and shield for a hard x-ray astronomy balloon flight},
  author={Peter F. Bloser and Tomohiko Narita and Jonathan A. Jenkins and Jonathan E. Grindlay},
  booktitle={SPIE Optics + Photonics},
We report on the construction and laboratory testing of pixellated CZT detectors mounted in a flip-chip, tiled fashion and read out by an ASIC, as required for proposed hard X-ray astronomy missions. Two 10 mm X 10 mm X 5 mm detectors were fabricated, one out of standard eV Products high-pressure Bridgman CZT and one out of IMARAD horizontal Bridgman CZT. Each was fashioned with a 4 X 4 array of gold pixels on 2.5 mm pitch with a surrounding guard ring. The detectors were mounted side by side… Expand
4 Citations
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We present initial results from our evaluation of a gold- contacted pixellated detector using cadmium zinc telluride substrate produced by IMARAD Imaging Systems. The Horizontal Bridgman (HB) grownExpand
(Fine-Pixel) imaging CdZnTe arrays for space applications
  • B. Ramsey
  • Physics
  • 2001 IEEE Nuclear Science Symposium Conference Record (Cat. No.01CH37310)
  • 2001
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Effect of twin boundaries on the spectroscopic performance of CdZnTe detectors
Most single grains in cadmium zinc telluride (CdZnTe) grown by the high-pressure Bridgman (HPB) technique contain multiple twin boundaries. As a consequence, twin boundaries are one of the mostExpand


Design and testing of a prototype pixellated CZT detector and shield for hard- x-ray astronomy
We report on the design and laboratory testing of a prototype imaging CZT detector intended for balloon flight testing in April 2000. The detector test several key techniques needed for theExpand
CdZnTe background measurement at balloon altitudes with an active BGO shield
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High-altitude balloon flight of CdZnTe detectors for high-energy x-ray astronomy
CdZnTe (CZT) is a room-temperature semiconductor well suited for high energy x-ray astronomy. Knowledge of its background properties is essential for optimizing CZT based instruments. To study itsExpand
High-altitude balloon flight of CdZnTe detectors for high-energy x-ray astronomy: II
Cadmium Zinc Telluride (CZT) is a room temperature semiconductor detector well suited for high energy x-ray astronomy. We have developed a CZT detector with 500 micron crossed strip readout and anExpand
Balloon-Borne Hard X-Ray Imaging and Future Surveys
Abstract Several payloads for hard X-ray (20–600 keV) imaging with coded aperture telescopes have been developed for balloon flight observations of cosmic x-ray sources. We briefly review theExpand
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We report initial results from the design and evaluation of two pixellated PIN Cadmium Zinc Telluride detectors and an ASIC-based readout system. The prototype imaging PIN detectors consist of 4 X 4Expand
Prototype Imaging CD-ZN-TE Array Detector
The authors describe initial results of their program to develop and test Cd-Zn-Te (CZT) detectors with a pixellated array readout. Their primary interest is in the development of relatively thickExpand
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Because of its high atomic number and convenient room temperature operation, CdZnTe has great potential for use in both balloon and space borne hard x-ray (5 - 200 keV) astrophysics experiments. HereExpand
Model calculations of the response of CZT strip detectors
Position-sensitive CZT detectors for research in astrophysics in the five - several hundred keV range are being developed by several groups. These are very promising for large area detector arrays inExpand
Instrumental background in balloon-borne gamma-ray spectrometers and techniques for its reduction
Abstract A study of the instrumental background in balloon-borne gamma-ray spectrometers is presented. The calculations are based on newly available interaction cross sections and new analyticExpand