Technical feasibility study on a fusion power monitor based on activation of water flow

摘要: As a part of development nuclear instrumentation for the international thermonuclear experimental reactor (ITER), technical feasibility fusion power monitor based on activation water flow was studied. The determines D–T neutron yield, i.e., power, by measuring 6.1 and 7.1 MeV γ rays accompanied disintegration 16N nuclei that are produced 16O(n,p) 16N reactions with 14 neutrons in water. consists pipe loop laid from first wall to outside bioshield γ-ray detector, e.g., BGO scintillator. Fusion can be measured an absolute value this similar method pneumatic tube system; addition, has feature continuously measures time resolution faster than 1 s. This also other excellent features terms long-term stability, sensitivity only being maintenance free. In order con...