Synchrotron radiation response characterization of coplanar grid CZT detectors

被引：18

作者：

Carini, GA ^{[1
]}

Bolotnikov, AE

Camarda, GS

Wright, GW

De Geronimo, G

Siddons, DP

James, RB

机构：

[1] Brookhaven Natl Lab, Nonproliferat & Natl Secur Dept, Upton, NY 11973 USA

[2] Univ Palermo, Dept Elect Engn, I-90128 Palermo, Italy

[3] Brookhaven Natl Lab, Instrumentat Div, Upton, NY 11973 USA

[4] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2005年 / 52卷 / 05期

关键词：

D O I：

10.1109/TNS.2005.856759

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Commercial 15 x 15 x 7.5 mm(3) coplanar grid CdZnTe detectors were studied on the micron-scale using a collimated high-energy X-ray beam provided by Brookhaven's National Synchrotron Light Source. This powerful tool enables simultaneous studies of detector response uniformity, electronic properties of the material, and effects related to the device's contact pattern and electric field distribution. The availability of a front-end Application Specific Integrated Circuit, developed at Brookhaven's Instrumentation Division, providing low noise amplification of grids and cathode signals, corresponding timing signal and adjustable relative gain, allowed to correlate performance mapping and fluctuations in collected charge. We observed the effect of the strip contacts comprising the coplanar grids on the energy resolution of the coplanar-grid device.

引用

页码：1941 / 1944

页数：4

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