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Recent Progress in The CdTe γ-Rays Detector Simulation

Published online by Cambridge University Press:  21 February 2011

C. Manfredotti ,
F. Fizzotti ,
C. Ongaro ,
E. Vittone  and
U. Nastasi
E. Vittone
Affiliation:
Experim. Physics Dept., Univers. of Torino, Via Giuria 1, Torino, and Sezione INFN, Italy
U. Nastasi
Affiliation:
Radiotherapy Dept., Ospedale S.Giovanni Battista, via S.Massimo 24, Torino, Italy
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Abstract

Recently, we reported a simulation of spectroscopic performances of CdTe detectors by a Monte Carlo program ‘ISIDE’. The program was demonstrated to be extremely useful both for an exact simulation of the spectral response of CdTe to γy-rays and for a detailed understanding of the effect of physical and electronic parameters on the experimental performances. In the present work, the attention is focused on the various aspects of CdTe response to 57Co γ-rays, in an energy interval which is extremely interesting for practical applications of CdTe spectroscopy. Spectra are presented for different experimental conditions, particularly as far as electronics set up is concerned, in correlation with the relevant rise time distributions and with spatial distribution of interaction points in the detector. It is proved that in order to account for the rise times distributions as compared with the experimental ones, one must assume the presence of a dead region on the front of the detector. Moreover, a clear indication of what is needed in order to reach the best energy resolution in realistic conditions is given.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 302: Symposium F – Semiconductors for Room-Temperature Radiation Detector Applications , 1993 , 183
Copyright
Copyright © Materials Research Society 1993

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References

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