MFTF-α+T: an upgrade to the MFTF-B

Several options for upgrading the MFTF-B physics and nuclear performance have been considered. Early in FY83, these upgrades were proposed to the fusion community. The one most favorably received was the MFTF-α+T. The proposed implementation will permit two modes of operation. One mode emphasizes better confinement and higher Q. A physics goal is to achieve a central cell Q of 2. At this point, about one-third of the central cell heating comes from alpha particles. At the proposed Q of 2, the power out of the center cell plasma is twice that of the input power to the plasma. The second operating mode emphasizes high fusion power production and high neutron wall loading in the central cell. This is achieved with a center cell insert module, which promises a wall loading of 2 MW/m2. This mode will provide a unique opportunity for operating a power-producing blanket section at reactor-like parameters