ARIES-I Tokamak Reactor Start-Up Simulations, Tradeoffs, and Engineering Considerations^†

Estimates of the ARIES-I current and fusion-power rampup have been made using a profile-averaging, plasma/circuit simulation model. For the case of a combined inductive and rf-assisted startup, a minimization of non-inductive startup power needed to supply both resistive and inductive magnetic-flux requirements generally favors a low-density current rampup, which is then followed by a DT fueling schedule that brings the plasma to full fusion power.