Neutronics analysis for ITER cable looms

作者：Serikov Arkady^*; Bertalot Luciano; Clough Matthew; Fischer Ulrich; Suarez Alejandro

来源：Fusion Engineering and Design, 2015, 96-97: 943-947.

DOI：10.1016/j.fusengdes.2015.03.014

• ITER tokamak
• Diagnostics
• Cable looms
• Fusion neutronics
• MCNP
• Helios supercomputer

This paper briefly presents the results of neutronics analysis performed in support for the design development of the ITER diagnostics cabling system including its cable looms. The cable looms are distributed all around the ITER device and attached to the inner wall of the Vacuum Vessel (VV) and under the divertor cassettes. The results include distributions of neutronics characteristics calculated with the MCNP5 3D Monte Carlo code assuming ITER operation with 0.54 Full Power Years on 500 MW fusion power of DT neutron source defined in the standard ITER B-lite neutronics model. Neutron and photon fluxes, neutron energy group fluences, nuclear heating, neutron damage, and neutron-induced transmutation of the cable looms' materials have been analyzed in this paper. This work provides data for more comprehensive integral analysis of the cabling system with consideration of thermo-mechanical, electromagnetic, and structural aspects. The temperature gradients along the cable looms and nuclear transmutation of copper could result in formation of thermocouples due to the Radiation-Induced Thermoelectric Sensitivity (RITES) effect, which should be reduced in order to enhance the performance of the magnetic sensors. Therefore, reliable thermal contact should be established in the places of attachments of cable looms to the VV inner wall and the divertor cassette body.

• 出版日期2015-10