Radial Potential Fluctuation Measurements During the Application of Electron Cyclotron Heating in the Tandem Mirror GAMMA 10

A study of fluctuation is one of main issues in fusion plasma researches. In the tandem mirror GAMMA10, a potential fluctuation changes during the formation of confinement potential with the application of electron cyclotron heating (ECH). Potential fluctuation induces radial particle transports. We...

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Bibliographic Details
Published in:Fusion science and technology 2009-02, Vol.55 (2T), p.82-86
Main Authors: Mizuguchi, Masanori, Yoshikawa, Masayuki, Miyata, Yoshiaki, Oono, Youhei, Nakashima, Yousuke, Imai, Tsuyoshi
Format: Article
Language:English
Subjects:
Communication, education, history, and philosophy
Exact sciences and technology
Magnetic confinement and equilibrium
Physics
Physics literature and publications
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasma heating by microwaves
ecr, lh, collisional heating
Plasma production and heating
Plasma properties
Transport properties
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Summary:A study of fluctuation is one of main issues in fusion plasma researches. In the tandem mirror GAMMA10, a potential fluctuation changes during the formation of confinement potential with the application of electron cyclotron heating (ECH). Potential fluctuation induces radial particle transports. We have studied the radial profiles of the potential fluctuation during the application of ECH. The potential in the central cell of GAMMA10 is measured by a gold neutral beam probe (GNBP) system. GNBP is a useful tool for the study of radial potential and its fluctuation directly in the fusion plasmas. It was confirmed that the stronger radial potential was formed during the application of plug ECH than that without plug-ECH.
ISSN:1536-1055
1943-7641
DOI:10.13182/FST09-A6987