Review of ICR Heating on the Spherical Tokamak Globus-M

被引：3

作者：

Dyachenko, V. V. ^{[1
]}

Ayushin, B. B. ^{[1
]}

Gusev, V. K. ^{[1
]}

Khitrov, S. A. ^{[1
]}

Chemyshev, F. V. ^{[1
]}

Mironov, M. I. ^{[1
]}

Petrov, Yu. V. ^{[1
]}

Sakharov, N. V. ^{[1
]}

Shcherbinin, O. N. ^{[1
]}

机构：

[1] RAS, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

来源：

RADIO FREQUENCY POWER IN PLASMAS | 2009年 / 1187卷

关键词：

spherical tokamak; RF heating; PLASMA;

D O I：

10.1063/1.3273726

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The results of experiments on the RF heating of hydrogen-deuterium plasma at ion cyclotron frequencies in the Globus-M spherical tokamak are presented. RF power up to 200 kW at frequencies about 7.5-9 MHz fed via a single-loop antenna led to an increase in the ion temperature from 180 eV up to 400 eV in the best case. High heating efficiency is maintained at high H-concentration (up to 70%). Characteristic times of the ion temperature buildup and decay corresponded to the ion energy confinement time. If the second hydrogen harmonic is arranged in front of antenna, on-axis ion heating becomes worse. It is shown, that in Globus conditions graphite shielding of an inner surface of a vacuum chamber decreases heating due to surface absorption of RF power. Simulation of processes of RF power absorption is performed also. For modeling I-D wave code was used including all possible mechanisms of RF power absorption.

引用

页码：197 / 200

页数：4

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