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An array of virtual Frisch-grid CdZnTe detectors and a front-end application-specific integrated circuit for large-area position-sensitive gamma-ray cameras

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/1.4927455· OSTI ID:1239771
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  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Univ. of Texas at El Paso, El Paso, Texas (United States)
  3. Korea University, Seoul (South Korea)
  4. SUNY Binghamton, Vestal, NY (United States)
+ Show Author Affiliations
We developed a robust and low-cost array of virtual Frisch-grid CdZnTe (CZT) detectors coupled to a front-end readout ASIC for spectroscopy and imaging of gamma rays. The array operates as a self-reliant detector module. It is comprised of 36 close-packed 6x6x15 mm3 detectors grouped into 3x3 sub-arrays of 2x2 detectors with the common cathodes. The front-end analog ASIC accommodates up to 36 anode and 9 cathode inputs. Several detector modules can be integrated into a single- or multi-layer unit operating as a Compton or a coded-aperture camera. We present the results from testing two fully assembled modules and readout electronics. The further enhancement of the arrays’ performance and reduction of their cost are made possible by using position-sensitive virtual Frisch-grid detectors, which allow for accurate corrections of the response of material non-uniformities caused by crystal defects.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE; USDOE National Nuclear Security Administration (NNSA), Office of Nonproliferation and Verification Research and Development (NA-22)
OSTI ID:
1239771
Alternate ID(s):
OSTI ID: 1228712
OSTI ID: 22482704
Report Number(s):
BNL--108271-2015-JA; NN2001
Journal Information:
Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 7 Vol. 86; ISSN 0034-6748; ISSN RSINAK
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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journal February 2012
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Cited By (1)

Efficient Charge Collection in Coplanar-Grid Radiation Detectors journal May 2018

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