Development of a position-sensitive CZT detector with coplanar grid electrode

The finite–element analysis was done to optimize position-sensing coplanar grid electrode geometry. CdZnTe crystals manufactured by PAM-XIAMEN with customized electrode geometry have been tested. After digitizing pre-amplifier signals, trapezoidal digital filter was adopted to enhance the signal to...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2018-06, Vol.316 (3), p.1221-1225
Main Authors: Kim, B. J., Lee, K. B., Lee, J. M., Park, T. S., Hwang, S. H.
Format: Article
Language:English
Subjects:
Cadmium zinc tellurides
Chemistry
Chemistry and Materials Science
Detection equipment
Diagnostic Radiology
Digital filters
Digitization
Electrodes
Electrons
Energy measurement
Energy resolution
Hadrons
Heavy Ions
Inorganic Chemistry
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Position measurement
Position sensing
Signal to noise ratio
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Description
Summary:The finite–element analysis was done to optimize position-sensing coplanar grid electrode geometry. CdZnTe crystals manufactured by PAM-XIAMEN with customized electrode geometry have been tested. After digitizing pre-amplifier signals, trapezoidal digital filter was adopted to enhance the signal to noise ratio. Energy resolution of 2.7% FWHM at 662 keV γ-ray energy was obtained. The measured results show the dramatic improvement with position-sensing technique.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-018-5890-5