FAR-TECH's Nanoparticle Plasma Jet System and its Application to Disruptions, Deep Fueling, and Diagnostics

Hyper{\-}velocity plasma jets have potential applications in tokamaks for disruption mitigation, deep fueling and diagnostics. Pulsed power based solid-state sources and plasma accelerators offer advantages of rapid response and mass delivery at high velocities. Fast response is critical for some disruption mitigation scenario needs, while high velocity is especially important for penetration into tokamak plasma and its confining magnetic field, as in the case of deep fueling. FAR-TECH is developing the capability of producing large-mass hyper-velocity plasma jets. The prototype solid-state source has produced: 1) $>$8.4 mg of H$_{2}$ gas only, and 2) $>$25 mg of H$_{2}$ and $>$180 mg of C$_{60}$ in a H$_{2}$/C$_{60}$ gas mixture. Using a coaxial plasma gun coupled to the source, we have successfully demonstrated the acceleration of composite H/C$_{60}$ plasma jets, with momentum as high as 0.6~g$\cdot $km/s, and containing an estimated C$_{60}$ mass of $\sim $75 mg. We present the status of FAR-TECH's nanoparticle plasma jet system and discuss its application to disruptions, deep fueling, and diagnostics. A new TiH$_{2}$/C$_{60}$ solid-state source capable of generating significantly higher quantities of H$_{2}$ and C$_{60}$ in $<$0.5 ms will be discussed.