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New CdTe Quantum Sensor, With Improved Spatial Resolution, for Fast X-Ray and γ-Ray Imaging

Published online by Cambridge University Press:  10 February 2011

Jean-Louis Gerstenmayer,
Olivier Bonnin,
Vincent Gerbe,
Francis Glasser and
Olivier Peyret
Jean-Louis Gerstenmayer
Affiliation:
CEA, BIII, BP 12, F-91680 Bruyères le Châtel
Olivier Bonnin
Affiliation:
CEA, BIII, BP 12, F-91680 Bruyères le Châtel
Vincent Gerbe
Affiliation:
CEA, LETI, F-38054 Grenoble
Francis Glasser
Affiliation:
CEA, LETI, F-38054 Grenoble
Olivier Peyret
Affiliation:
CEA, LETI, F-38054 Grenoble
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Abstract

We have designed and tested a new compact, very sensitive (>1 μRad), X-ray quantum sensor for high energy (0.5 -10 MeV) flash imaging. Monte Carlo simulations have been computed for several interesting detector materials (CdZnTe, HgI2-a, BGO, CsI, LSO...). From these calculations, we obtain general design rules and curves which allow one to optimize the pixel size of a sensor to the dose levels. An experimental CdZnTe detector array and its performance is presented.

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