[Table of Contents]

Plasma and Fusion Research

Volume 7, 1403125 (2012)

Regular Articles

Scaling Law of Non-Inductive Current Drive Steady State Tokamak
Kenro MIYAMOTO
Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
(Received 15 May 2012 / Accepted 8 July 2012 / Published 13 September 2012)

Abstract

In non-inductive current drive steady state operation of tokamak reactor, it is desirable that the Qcd value determined by the plasma current balance is the same as the Q value determined by the plasma energy balance [Progress in the ITER Physics Basis, Nucl. Fusion 47, S285 (2007)]. The more quantitative scaling laws of Q and Qcd are derived from the scaling laws of electron density, beta ratio, energy confinement time and current drive efficiency. The reduced scaling laws of Q and Qcd are examined by comparison with the data of the standard scenario of inductive operation and the reference scenario of non-inductive operation of ITER. Sensitivities of Q and Qcd on the plasma parameters are studied and requirement is examined to satisfy Qcd ≈ Q.

Keywords

steady state tokamak reactor, non-inductive current drive, ITER, current drive efficiency

DOI: 10.1585/pfr.7.1403125

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This paper may be cited as follows:

Kenro MIYAMOTO, Plasma Fusion Res. 7, 1403125 (2012).