First-principle theory-based scaling of the SOL width in limited tokamak plasmas, experimental validation, and implications for the ITER start-up(25thIAEA2014)

Result code in IS VaVaI

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Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

First-principle theory-based scaling of the SOL width in limited tokamak plasmas, experimental validation, and implications for the ITER start-up(25thIAEA2014)

Original language description

Předneseno na:25th IAEA Fusion Energy Conference,2014 The steady-state heat load onto the plasma facing components of tokamak devices depends on the SOL width, which results from a balance between plasma outflowing from the core region, turbulent transport, and losses to the divertor or limiter. Here we present a first-principle based scaling for the characteristic SOL pressure scale length. It is found that the SOL width increases with the tokamak major radius, the safety factor, and the density, whileit decreases with the toroidal magnetic field and the plasma temperature. The scaling is benchmarked against the flux-driven non-linear turbulence simulations that have been carried out with the GBS code. The theoretical scaling reveals good agreement with experimental data obtained in a number of tokamaks, including TCV, Alcator C- MOD, COMPASS, JET, and Tore Supra.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů