Numerical Analysis for Controlling the Eigenmode Formation of Alfven Waves in the GAMMA 10 Tandem Mirror

Journal Article · Sat Jan 15 00:00:00 EST 2005 · Fusion Science and Technology

OSTI ID:20849836

Yamaguchi, Y ^[1]; Ichimura, M ^[1]; Higaki, H ^[1]; Kakimoto, S ^[1]; Ide, K ^[1]; Inoue, D ^[1]; Nagai, H ^[1]; Nakagome, K ^[1]; Fukuyama, A ^[2]; Cho, T ^[1]

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1. Plasma Research Center, University of Tsukuba (Japan)
2. Kyoto University (Japan)

The numerical analysis is performed with two dimensional wave code for controlling the eigenmode formation of fast Alfven waves in the GAMMA 10 central cell. The plasma production by fast waves depends on the wave excitation in the plasma. Eigenmodes are strongly formed when the boundary conditions in the axial and radial directions are satisfied. As the optimum density for the formation of eigenmode exists discretely, the density is clamped at the value where the eigenmode is strongly formed. For the higher density plasma production, the eigenmodes must be continuously excited as the density increases. It is found that the almost continuous excitation of eigenmodes can be realized by using two waves with different frequencies at the same time.

• OSTI ID: 20849836
• Journal Information: Fusion Science and Technology, Vol. 47, Issue 1T; Other Information: Copyright (c) 2006 American Nuclear Society (ANS), United States, All rights reserved. http://epubs.ans.org/; Country of input: International Atomic Energy Agency (IAEA); ISSN 1536-1055
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALFVEN WAVES
BOUNDARY CONDITIONS
EXCITATION
GAMMA 10 DEVICES
NUMERICAL ANALYSIS
PLASMA
PLASMA DENSITY
PLASMA PRODUCTION
TWO-DIMENSIONAL CALCULATIONS