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.
References
[1]
ITER Project. http://www.iter.org
[2]
ITER Documentation Series (2001) Summary of the ITER Final Design Report IAEA/ITER EDA/DA/22. Vienna/ IAEA.
[3]
Geant4 Collaboration (2009) Introduction to GEANT4 User Documentation Version 4.9.4.
[4]
Araújo, A., Pereira, C., Veloso, M.A.F. and Costa, A.L. (2010) Flux and Dose Rate Evaluation of ITER System Using MCNP5 Brazilian. Journal of Physics, 40, 58-62. http://dx.doi.org/10.1590/S0103-97332010000100010
[5]
Velasquez, C.E., Pereira, C., Veloso, M.A.F. and Costa, A.L. (2014) Modelling Effects on Axial Neutron Flux in a Tokamak Device. Progress in Nuclear Energy, 78, 388-395. http://dx.doi.org/10.1016/j.pnucene.2014.03.005
[6]
ITER Documentation Series (1991) ITER Conceptual Design Report IAEA/ITER/DS/18. Vienna/IAEA.
[7]
Tabbakh, F. (2015) An Analytical Study of Photonuclear Interaction in ITER Operation for Enhancing the Nuclear Heating. Journal of Fusion Energy, 1-4. http://dx.doi.org/10.1007/s10894-015-9966-8
