Shielding Design of HT-7U Nuclear Fusion Experimental Device

Calculation and analysis on radiation field around HT 7U tokamak device under the condition of D D discharge have been performed with the one dimensional and two dimensional discrete ordinates transport calculation codes ANISN and DOT3.5.The effects of concrete wall and borated water with different thicknesses of the shield have been analyzed and optimized.The neutron spectrum,induced photon spectrum and dose rates equivalent are presented as a reference to the radiation protection design of HT 7U device.