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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/n_G $\sim$ 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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