HAND-HELD GAMMA-RAY SPECTROMETER BASED ON HIGH-EFFICIENCY FRISCH-RING CdZnTe DETECTORS.
Frisch-ring CdZnTe detectors have demonstrated good energy resolution, el% FWHM at 662 keV, and good efficiency for detecting gamma rays. This technique facilitates the application of CdZnTe materials for high efficiency gamma-ray detection. A hand-held gamma-ray spectrometer based on Frisch-ring detectors is being designed at Brookhaven National Laboratory. It employs an 8x8 CdZnTe detector array to achieve a high volume of 19.2 cm3, so that detection efficiency is significantly improved. By using the front-end ASICs developed at BNL, this spectrometer has a small profile and high energy resolution. The spectrometer includes signal processing circuit, digitization and storage circuit, high-voltage module, and USB interface. In this paper, we introduce the details of the system structure and report our test results with it.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- Doe - National Nuclear Security Administration
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 910363
- Report Number(s):
- BNL-77989-2007-CP; R&D Project: 10514; NN2001030; TRN: US0704138
- Resource Relation:
- Conference: 2007 NUCLEAR SCIENCE SYMPOSIUM MEDICAL IMAGING CONFERENCE; HONOLULU, HAWAII; 20071028 through 20071103
- Country of Publication:
- United States
- Language:
- English
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