Mitigation by CT injection may have a number of advantages

1. Mitigation by CT injection may have a number of advantages • The injected compact torus (CT) moves quickly • Slowest step in CT mitigation is gas-puffing into the injector (~200 s). Bias flux can be provided by permanent magnet • By coordinating MGI and CT timing, core cooling could be precisely controlled • The CT species and velocity can be varied to tailor the penetration depth • Could reduce the total amount of injected gas from the MGI system, making recovery easier • It might also allow for tailoring the shut-down to avoid the “hot-tail” runaways which are common with pellets R. Raman U. Washington • Further advantages if the CT system is operated in a Marshall Gun mode? • A long trailing plasma containing significant neutrals and at amounts >100 times more than the mass of a single CT can be injected • These neutrals would have much higher velocity than what is possible by MGI alone and would penetrate on a faster time scale