Plasma Performance Required for a Tokamak Reactor to Generate Net Electric Power.

Abstract

Using a system analysis code, plasma parameter ranges required for a Tokamak reactor to generate net electric power (Penet) were investigated. The investigation revealed that in order for a Tokamak to produce a net electric power of 0 MW under foreseeable engineering conditions, it is required to achieve simultaneously the following ranges of parameters, i.e., normalized beta value 1.2 ≤ βN ≤ 2.7, confinement improvement factor for H-mode scaling 0.8 ≤ HH, and the ratio of Greenwald density limit 0.4 ≤ fnGW ≤ 1.1, for a major radius R ≤ 8.5 m. It also revealed that a reactor to produce a net electric power of 1,000 MW requires the simultaneous achievement of βN ≥ 3.0, HH ≥ 0.9 and fnGW ≥ 0.9.