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(THP2/18) Predictive Simulations of High Performance and Dimensionless Scaling Experiments on JET

P. Strand, H. Nordman, J. Weiland, A. Jarmén

Chalmers University of Technology, Göteborg, Sweden

J. P. Christiansen
JET Joint Undertaking, Abingdon, UK

Abstract.  Predicitive simulations have been performed on JET dimensionally similar discharges together with high performance hot-ion H-mode and optimised shear discharges. The first-principles drift-wave model used in the simulations predicts global scalings in reasonable agreement with the scalings observed in the collisionality, isotope and $\beta$-scans of JET ELMy H-modes. In contrast to the weak dependence on $\beta$ found in the ELMy H-mode discharges, effects of finite-$\beta$ are shown to be important in the simulations of high performance discharges such as the ELM-free hot-ion H-modes on JET.

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