COMPACT TOROID FUELING FOR ITER

Experimental and theoretical work indicates that deep fueling of ITER may be possible by Compact Toroid (CT) injection. CT velocities suffic ient for center fueling of a reactor have been demonstrated in the RAC E device. CT injections into the TdeV tokamak have achieved central pe netration at 1.4 T, and have increased the particle inventory by more than 30% without disruption. Tests on the MARAUDER device have achieve d CT mass-densities suitable for injection into 5 T tokamaks. Techniqu es for producing multiple-shot CT's with passive electric switching ar e being tested on CTIX. The advantages of deep fueling by CT injection include profile peaking to reach ignition, profile control, low triti um inventory and others. In this paper, the CT experimental results ar e summarized, a conceptual design of a CT fueler for ITER is presented , and the implications on ITER operation and fuel cycle are discussed.