ASSESSMENT OF NEUTRON RADIATION DAMAGE AND SHIELDING FOR OPERATIONAL GOOD PRACTICE OF THE VIDEO SYSTEMS AT JET

摘要

High neutron and gamma ray yields in fusion reactorslike JET can be detrimental to the applied diagnosticequipment such as video imaging systems. For instance,defects induced in semiconductors by neutrons viadisplacement damage effects degrade the performance ofCCD image sensors. Actions to minimize and/or mitigatethese effects need to be considered during operation andmaintenance of the video system at JET. A preliminarystudy on the setting up of a neutron/gamma shield aroundthe cameras has been pursued.