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.
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 D-T generator. Within the uncertainty of the experimental set-up (4% at 95% confidence level) the unpackaged device was found to have essentially zero activation dose-burden whereas the packaged device exhibits a considerable degree of post irradiation absorbed dose due to deactivation radiation.
Price
Robert A
RA
Department of Radiography, City University, Rutland Place, Charterhouse Square, London EC1M 6PA, UK. rprice1495@aol.com
D016477:Artifacts; D004867:Equipment Design; D019544:Equipment Failure Analysis; D009502:Neutrons / Q000627:therapeutic use*; D010315:Particle Accelerators / Q000295:instrumentation; D017785:Photons / Q000627:therapeutic use*; D011786:Quality Control; D011835:Radiation Protection / Q000295:instrumentation* / Q000379:methods; D011868:Radioisotopes / Q000032:analysis*; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods; D011879:Radiotherapy Dosage; D011882:Radiotherapy, High-Energy / Q000295:instrumentation* / Q000379:methods; D014159:Transducers; D014173:Transistors, Electronic
D011868:Radioisotopes