Performance Assessment of ITER-FEAT

概要

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Three typical operation modes (inductive, hybrid and non-inductive modes) of ITER-FEAT are investigated by using 0D and 1.5D transport codes. Sensitivity analyses on the effects of density profile, impurity concentration and ion heating fraction are performed. It is shown that ITER-FEAT can achieve its required physics performance (fusion gain Q≥10) with a range of different assumptions for these effects. Operation with high fusion gain (Q〜50) and possibility of ignition operation are also explored. It is shown that transient ignition is possible and sustained ignition can be achieved with a slight improvement of plasma performance. Plasma performance is estimated by a new approach using a probabilistic method. It is shown that the probability to reach Q≥10 is 65%-90% (depending on the scaling formula to be used). This value for Q≥50 is 25%-60%. In hybrid mode (long pulse operation with non-inductive current drive), the burn time longer than 1,000s is shown to be achievable with conservative assumptions. A preliminary study for full non-inductive mode shows that operation compatible with divertor conditions is possible when the confinement enhancement factor HH(y,2) is 1.5 and the normalized beta β_N is 3.5.
社団法人プラズマ・核融合学会の論文
2001-07-25