Synchrotron radiation response characterization of coplanar grid CZT detectors

Author

Carini, G.A. ; Bolotnikov, A.E. ; Camarda, G.S. ; Wright, G.W. ; James, R.B. ; De Geronimo, D.G. ; Siddons, D.P.

Author_Institution

Nonproliferation & Nat. Security Dept., Brookhaven Nat. Lab., Upton, NY

Volume

7

fYear

2004

fDate

16-22 Oct. 2004

Firstpage

4264

Lastpage

4267

Abstract

Commercial 15times15times7.5 mm³ 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

Keywords

X-ray detection; application specific integrated circuits; nuclear electronics; semiconductor counters; synchrotron radiation; Brookhaven National Synchrotron Light Source; cathode signals; collimated high-energy X-ray beam; coplanar grid CdZnTe detectors; detector response uniformity; device contact pattern; electric field distribution; electronic properties; energy resolution; fluctuations; front-end Application Specific Integrated Circuit; low noise amplification; performance mapping; strip contacts; timing signal; Application specific integrated circuits; Availability; Instruments; Integrated circuit noise; Light sources; Optical collimators; Radiation detectors; Synchrotron radiation; X-ray detection; X-ray detectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2004 IEEE

Conference_Location

Rome

ISSN

1082-3654

Print_ISBN

0-7803-8700-7

Electronic_ISBN

1082-3654

Type

conf

DOI

10.1109/NSSMIC.2004.1466832

Filename

1466832