Energy resolution improvement in room-temperature CZT detectors

被引：9
|
作者：
Ramachers, Y. [1 ]
Stewart, D. Y. [1 ]
机构：
[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England
来源：
JOURNAL OF INSTRUMENTATION | 2007年 / 2卷
基金：
英国科学技术设施理事会;
关键词：
gamma detectors (scintillators; CZT; HPG; HgI etc); front-end electronics for detector readout; data processing methods;
D O I：
10.1088/1748-0221/2/12/P12003
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We present methods to improve the energy resolution of single channel, room-temperature Cadmium-Zinc-Telluride (CZT) detectors. A new preamplifier design enables the acquisition of the actual transient current from the crystals and straightforward data analysis methods yield unprecedented energy resolution for our test-detectors. These consist of an eV-CAPture Plus crystal as standard and 1 cm cube Frisch collar crystals created in-house from low-grade coplanar grid detectors. Energy resolutions of 1.9% for our collar detectors and 0.8% for the eV crystal at 662 keV were obtained. The latter compares favourably to the best existing energy resolution results from pixel detectors.
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页数：13
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