HEAT-RESISTANT NEUTRON SHIELDING AND THE NEUTRON SHIELD METHOD

摘要

PROBLEM TO BE SOLVED: To provide a heat resistant neutron shielding and a neutron shield method, employing the shielding which shows heat resistance to over 250°C, has ample neutron shield performance and can be placed along the outer wall of a vacuum vessel and the like, in a fusion system without providing special cooling systems.;SOLUTION: The heat resistant neutron shielding is obtained by hot-press molding neutron-shielding components including phenol resin of 100 pts.mass, of which the heat resistance temperature of the hardening object is over 250°C and neutron absorbing powder of 1 to 10 pts.mass having boron carbide powder of 1 pts.mass. The neutron shielding method has the heat resistant neutron shielding arranged along the outer wall of at least the vacuum vessel, in a fusion system provided with a torus-shaped vacuum vessel inside a superconducting coil.;COPYRIGHT: (C)2006,JPO&NCIPI