Concept of a blanket first wall supported by radial tubes

This paper describes a new idea for the design of the first wall of a fusion reactor blanket. Radially oriented tubes are used to support the first wall and to channel coolant to the front of the blanket. A metal skin resembling a tufted or quilted seat cushion is supported in pure tension by the tubes. This thin skin, which forms the first wall, can contain the internal pressure of the blanket and yet be reasonably transparent to neutrons. The structural volume fraction is the minimum theoretically required, thus further enhancing neutron economy. Another advantage is the openness of the blanket interior, giving the blanket designer considerable freedom. The design appears to be resistant to radiation damage.