TITLE:
Photonuclear Effect on ITER Operation
AUTHORS:
Farshid Tabbakh, Amir Hossein Gharashi
KEYWORDS:
ITER, Photo-Nuclear, Wall-Loading, Energy Deposition, GEANT4
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.3 No.8,
August
26,
2015
ABSTRACT: In this study, neutron and gamma radiation
produced during the ITER tokamak operation including the nuclear heating were
studied. This is an approach for analyzing the neutron flux by their
contributions. The calculations were conducted using Geant4 Monte Carlo method
based on the ITER simplified geometry. It was found that for present design of
ITER, only 0.1% of neutrons is contributed by photonuclear interaction while,
33% belongs to the (n, xn) reaction. Finally by adding Beryllium element in the
coolant leading to the increase in the neutron flux by increasing the rate of (γ,
n) reactions was calculated.