Plasma Fueling, Pumping, and Tritium Handling Considerations for FIRE

摘要

Tritium pellet injection will be utilized on the Fusion Ignition Research211u001eExperiment (FIRE) for efficient tritium fueling and to optimize the density 211u001eprofile for high fusion power. Conventional pneumatic pellet injectors, coupled 211u001ewith a guidetube system to launch pellets into the plasma from the high, field 211u001eside, low field side, and vertically, will be provided for fueling along with gas 211u001epuffing for plasma edge density control. About 0.1 g of tritium must be injected 211u001eduring each 10-s pulse. The tritium and deuterium will be exhausted into the 211u001edivertor. The double null divertor will have 16 cryogenic pumps located near the 211u001edivertor chamber to provide the required high pumping speed of 200 torr-L/s.