Shield Optimization Study for Choke Coil of Tandem Mirror Fusion Reactor 'GAMMA R'

摘要

In summary, shield optimization calculations have been carried out for the choke coil shield of the GAMMA R. We could obtained the shield distribution in which an expensive material, tungsten, is effectively used to protect the choke coil. This optimal distribution could not have been obtained by varying the homogenized composition parametrically. Such an optimized distribution can decrease the amount of tungsten by 40% compared to the original homogeneous shield, while retaining the same dpa rate in the SC coil. These results provide the basic information for further study of the choke coil design for the GAMMA R.