[Table of Contents]

Plasma and Fusion Research

Volume 9, 3402128 (2014)

Regular Articles

Microwave Reflection from the Region of Electron Cyclotron Resonance Heating in the L-2M Stellarator
German M. BATANOV, Valentin D. BORZOSEKOV, Nikolay K. KHARCHEV, Leonid V. KOLIK, Eugeny M. KONCHEKOV, Dmitriy V. MALAKHOV, Alexander E. PETROV, Karen A. SARKSYAN, Alexander S. SAKHAROV, Nina N. SKVORTSOVA and Vladimir D. STEPAKHIN
Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow 119991, Russia
(Received 9 December 2013 / Accepted 15 May 2014 / Published 29 July 2014)

Abstract

In experiments on electron cyclotron resonance (ECR) heating of plasma at the second harmonic of the electron gyrofrequency in the L-2M stellarator, the effect of partial reflection of high-power gyrotron radiation from the ECR heating region located in the center of the plasma column have been revealed. The reflection coefficient is found to be on the order of 10−3. The coefficient of reflection of an extraordinary wave from the second-harmonic ECR region is calculated in the one-dimensional full-wave model. The calculated and measured values of the reflection coefficient are found to coincide in the order of magnitude.

Keywords

stellarator, plasma heating, microwave, gyrotron, electron-cyclotron resonance, full-wave equation

DOI: 10.1585/pfr.9.3402128

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This paper may be cited as follows:

German M. BATANOV, Valentin D. BORZOSEKOV, Nikolay K. KHARCHEV, Leonid V. KOLIK, Eugeny M. KONCHEKOV, Dmitriy V. MALAKHOV, Alexander E. PETROV, Karen A. SARKSYAN, Alexander S. SAKHAROV, Nina N. SKVORTSOVA and Vladimir D. STEPAKHIN, Plasma Fusion Res. 9, 3402128 (2014).