Tokamak disruption heat flux simulator

Summary form only given. A coaxial plasma gun system, operating in the deflagration mode, has been built and fired. This system. powered by a 100-kJ capacitor bank, was designed to give a variable pulse length of approximately 50-100 μs. Current diagnostics for the system are rather rudimentary but sufficient for determination of plasma pulse characteristics and energy transfer to target. Electrical measurements include bank voltage measured via resistive voltage dividers and bank current measured via Rogowski coil. The shape of the plasma, its position relative to the target area, and the final impact area are determined via open-shutter photography and the use of witness plates. The total energy deposited onto targets will be determined through simple calorimetry and careful target mass measurements. Preliminary results describing the ablation of carbon targets exposed to disruptions like heat fluxes were obtained