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A capacitive Frisch grid structure for CdZnTe detectors

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4 Author(s)
Montemont, G. ; Lab d''Electron. et de Technol. de l''Inf., CEA, Centre d''Etudes Nucleaires de Grenoble, France ; Arques, M. ; Verger, L. ; Rustique, J.

Recent results with CdZnTe (CZT) gamma spectrometers have shown that Frisch grid structures yield an excellent performance. Hole trapping problems have been solved by this means. However, some difficulties persist concerning optimization of performance in terms of electronic noise and response uniformity. Also, the complexity of Frisch grid structures makes them hard to manufacture on an industrial scale. This paper presents some results obtained using a new Frisch grid structure based on capacitive coupling. Extremely easy to produce, it allows highly efficient detector screening without leakage current increase

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Nuclear Science, IEEE Transactions on  (Volume:48 ,  Issue: 3 )