A data acquisition and processing system for 3-D position sensitive CZT gamma-ray spectrometers

Journal Article · Wed Dec 01 00:00:00 EST 1999 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers)

DOI:https://doi.org/10.1109/23.819268· OSTI ID:20015426

Li, W; He, Z; Knoll, G F; Wehe, D K; Berry, J E

A PC-based data acquisition and processing system has been developed for two 3-D position-sensitive CZT {gamma} ray detectors. For each 3-D CZT detector, an integrated readout chip (VA1) is used to read out the signals from the 11 x 11 anode pixels. Two independent preamplifiers are used to read out the signals from the cathode and the grid electrodes that are used as trigger signals for low and high energy incident {gamma} rays, respectively. A PC-based DAQ board samples the amplitudes of the signals from the anode pixels and the cathode. The software collects and processes the energy spectra from the sampling data. The typical equivalent electronic noise of this system is measured to be 6 keV and 7 keV for the two 3-D CZT detectors, and the dynamic range of the system is up to 1 MeV. Spectra from 60, 122 and 662 keV {gamma} rays have been successfully measured using the two 3-D CZT detectors.

• Research Organization: Univ. of Michigan, Ann Arbor, MI (US)
• OSTI ID: 20015426
• Journal Information: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers), Vol. 46, Issue 6Pt2; Conference: 1998 Nuclear Science Symposium, Toronto, Ontario (CA), 11/08/1998--11/14/1998; Other Information: PBD: Dec 1999; ISSN 0018-9499
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
GAMMA SPECTROMETERS
DATA ACQUISITION SYSTEMS
DATA PROCESSING
POSITION SENSITIVE DETECTORS
READOUT SYSTEMS
ENERGY SPECTRA
NOISE
SEMICONDUCTOR DETECTORS