Second generation of portable gamma camera based on Caliste CdTe hybrid technology
Abstract
In the framework of a national funded program for nuclear safety, a first prototype of portable gamma camera was built and tested. It integrates a Caliste-HD CdTe-hybrid detector designed for space X-ray astronomy coupled with a new system-on-chip based acquisition system (FPGA and ARM microprocessor) and thermo-electrical coolers for a use at room temperature. The complete gamma part of the camera fits in a volume of 15 x 15 x 40 cm^3 for a mass lower than 1 kg and a power consumption lower than 10 W. Localization and spectro-identification of radionuclides in a contaminated scene were demonstrated during several test campaigns. A new generation of system is under development taking into account feedback experience from in-situ measurements and integrating a new generation of sensor cost-optimized by industrial applications called Caliste-O. Caliste-O holds a 16 x 16 pixel detector of 14 x 14 mm^2 and 2 mm thick with 8 full-custom front-end IDeF-X HD ASICs. Two prototypes were fabricated and tested. The paper will present the results of in-situ measurements with the first gamma camera, the spectroscopic performance of Caliste-O and the design of the second generation of gamma camera which aims for real time imaging and spectro-identification.
Keywords
Cite
@article{arxiv.2001.10224,
title = {Second generation of portable gamma camera based on Caliste CdTe hybrid technology},
author = {Daniel MAIER and Claire BLONDEL and Cyrille DELISLE and Olivier LIMOUSIN and Jerome MARTIGNAC and Aline MEURIS and Francois VISTICOT and Geoffrey DANIEL and Pierre-Anne BAUSSON and Olivier GEVIN and Guillaume AMOYAL and Frederick CARREL and Vincent SCHOEPFF and Charly MAHE and Fabrice SOUFFLET and Marie-Cecile VASSAL},
journal= {arXiv preprint arXiv:2001.10224},
year = {2020}
}
Comments
6 pages, 7 figures