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(ITERP/05) Physics Basis of ITER-FEAT

M. Shimada1), D. J. Campbell2), M. Wakatani3), H. Ninomiya4), N. V. Ivanov5), V. Mukhovatov1) and the ITER Joint Central Team and Home Teams
1) ITER Joint Central Team, Naka Joint Work Site, Naka-machi, Ibaraki-ken, Japan
2) EFDA Close Support Unit, Garching, Germany
3) Kyoto University, Kyoto, Japan
4) Japan Atomic Energy Research Institute, Naka-machi, Ibaraki-ken, Japan
5) Kurchatov Institute, Moscow, Russian Federation

Abstract.  This paper reviews Physics R&D results obtained since the publication of the ITER Physics Basis document. The heating power required for the LH transition has been re-assessed, including recent results from C-Mod and JT-60U and it has been found that the predicted power is a factor of two lower than the previous projection. For predicting ITER-FEAT performance, a conservative scaling IPB98(y,2) has been adopted for the energy confinement, producing confinement times $ \sim$ 20% lower than those derived from the IPB98(y,1) law. While energy confinement degradation at high density remains a serious issue, recent experiments suggest that good confinement is achievable in ITER at n/nG $ \sim$ 0.85 with high triangularity. The estimated runaway electron energy has been reduced to $ \sim$ 20MJ, since recent experiments show that runaway electrons disappear for q95leq2.

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IAEA 2001