Title :
Neutron energy spectrum determination near the surface of the JET vacuum vessel using the multifoil activation technique
Author :
Pillon, M. ; Jarvis, O.N. ; Conroy, S.
Author_Institution :
Assoc. EURATOM-ENEA, Rome, Italy
Abstract :
The activation of zinc, indium, aluminum, copper and magnesium foils has been used as a means of examining the energy spectrum of neutrons produced by discharges in the Joint European Torus (JET). Several threshold reactions are used together with a least-squares unfolding code to determine the 2.5 and 14 MeV neutron yields produced by the JET plasma; the analysis shows that the energy spectrum produced by downscattered neutrons is satisfactorily calculated with the MCNP neutron transport code
Keywords :
Monte Carlo methods; fusion reactor ignition; fusion reactor theory and design; neutron spectra; neutron transport theory; Al; Cu; In; JET vacuum vessel; Joint European Torus; MCNP neutron transport code; Mg; Zn; discharges; downscattered neutrons; energy spectrum; least-squares unfolding code; multifoil activation; neutron yields; plasma; surface; threshold reactions; Elementary particle vacuum; Neutrons; Plasma confinement; Plasma materials processing; Plasma measurements; Plasma simulation; Plasma transport processes; Radioactive decay; Tokamaks; Zinc;
Conference_Titel :
Fusion Engineering, 1989. Proceedings., IEEE Thirteenth Symposium on
Conference_Location :
Knoxville, TN
DOI :
10.1109/FUSION.1989.102196
