Translator Disclaimer
21 October 2004 Characterization of coplanar grid CZT detectors with highly collimated x-ray beam
Author Affiliations +
CdZnTe detectors demonstrated great potentials for detection of gamma radiation. However, energy resolution of CdZnTe detectors is significantly affected by uncollected holes which have low mobility and short lifetime. To overcome this deleterious effects upon energy resolution special detector designs have to be implemented. The most practical of them are the small pixel effect device, the co-planar grid device, and the virtual Frisch-grid device. We routinely use a highly collimated high-intensity X-ray beams provided by National Synchrotron Light Source (NSLS) facility at Brookhaven National Laboratory to study of CdZnTe material and performances of the different types of devices on the micron-scale. This powerful tool allows us to evaluate electronic properties of the material, device performance, uniformity of the detector responses, effects related to the device's contact pattern and electric field distribution, etc. In particular, in this paper we present new results obtained from the performance studies of 15 x 15 x 7.5 mm3 coplanar-grid devices coupled to readout ASIC. We observed the effect of the strip contacts comprising the grids on the energy resolution of the coplanar-grid device.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gabriella A. Carini, Aleksey E. Bolotnikov, Giuseppe S. Camarda, Gomez W. Wright, Gianluigi De Geronimo, D. Peter Siddons, and Ralph B. James "Characterization of coplanar grid CZT detectors with highly collimated x-ray beam", Proc. SPIE 5540, Hard X-Ray and Gamma-Ray Detector Physics VI, (21 October 2004);


Novel x ray and gamma ray drift detectors based on...
Proceedings of SPIE (October 19 1999)
New results from testing of coplanar-grid CdZnTe detectors
Proceedings of SPIE (September 16 2005)
High-energy x-ray imaging spectrometer (HEXIS)
Proceedings of SPIE (November 10 1998)
Techniques Of Absolute Low Energy X-Ray Calibration
Proceedings of SPIE (August 12 1986)
Hybrid contacts for CZT virtual Frisch-grid detectors
Proceedings of SPIE (September 22 2011)

Back to Top