Published November 2012 | Version v1
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Studies of energetic-ion-driven MHD instabilities in helical plasmas with low magnetic shear

Creators

  • 1. Kyoto University, Institute of Advanced Energy, Uji, Kyoto (Japan)
  • 2. National Laboratory for Magnetic Fusion, CIEMAT, Madrid (Spain)

Description

We discuss the features of energetic-ion-driven MHD instabilities such as Alfvén eigenmodes (AEs) in three-dimensional magnetic configuration with low magnetic shear and low toroidal field period number (Np) that are characteristic of advanced helical plasmas. Comparison of experimental and numerical studies in Heliotron J with those in TJ-II indicates that the most unstable AE is global AE (GAE) in low magnetic shear configuration in spite of the iota and the helicity-induced AE (HAE) is also the most unstable AE in the high iota configuration. (author)

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Additional details

Publishing Information

Imprint Pagination
9 p.
Report number
NIFS--1057

Conference

Title
24. IAEA Fusion Energy Conference
Dates
8-13 Oct 2012
Place
San Diego, CA (United States)

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
45097516
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ALFVEN WAVES; BEAM INJECTION HEATING; COMPUTERIZED SIMULATION; HELICAL CONFIGURATION; HELICITY; HELIOTRON; MAGNETIC CONFINEMENT; MAGNETIC FIELDS; MAGNETIC SURFACES; MAGNETOHYDRODYNAMICS; MHD EQUILIBRIUM; OSCILLATION MODES; PLASMA MACROINSTABILITIES; ROTATIONAL TRANSFORM; SHEAR; TAIL IONS
Descriptors DEC
CHARGED PARTICLES; CLOSED PLASMA DEVICES; CONFIGURATION; CONFINEMENT; EQUILIBRIUM; FLUID MECHANICS; HEATING; HYDRODYNAMICS; HYDROMAGNETIC WAVES; INSTABILITY; IONS; MAGNETIC FIELD CONFIGURATIONS; MECHANICS; PARTICLE PROPERTIES; PLASMA CONFINEMENT; PLASMA HEATING; PLASMA INSTABILITY; SIMULATION; THERMONUCLEAR DEVICES

Optional Information

Notes
12 refs., 6 figs., 1 tab.
Secondary number(s)
IAEA-CN--197; EX/5--2