Towards an optimum design of a P-MOS radiation detector for use in high-energy medical photon beams and neutron facilities: analysis of activation materials
Department of Radiography, City University, Rutland Place, Charterhouse Square, London EC1M 6PA, UK
Corresponding author: rprice1495{at}aol.com
The behaviour of packaged and unpackaged ESAPMOS4 RadFET radiation detectors (NMRC Cork, Ireland) was investigated when used in the mixed photon and neutron environment of a medical linear accelerator operating above the nucleon separation energy and in a 14 MeV neutron field provided by a DT generator. Within the uncertainty of the experimental set-up (4% at 95% confidence level) the unpackaged device was found to have essentially zero activation doseburden whereas the packaged device exhibits a considerable degree of post irradiation absorbed dose due to deactivation radiation.
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