A NEW KIND OF POCKET GAMMA-NEUTRON DOSERATE CHIRPER |
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Authors: | LEI Chuan-Heng |
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Institution: | Institute of High Energy Physics, Academia Sinica, Beijing |
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Abstract: | In order to avoid unnecessary or unallowable exposure in the gamma-neutron mixed field, the radioactive-contact person should know the radiation environment at any time by himself when he is working. A new kind of pocket radiation doserate monitor (chirper) based on silicon PIN photodiode as detector is designed. It can be used to monitor the gamma doserate in the order of 1 mrem/h and the neutron doserate in the order of 10 mrem/h simultaneously. In this paper, the detector selection, the circuit design, the construction and the performance of the chirper prototype are described. |
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