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Global marginal stability of TAEs in the presence of fast ions

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Abstract

The global stability of toroidicity-induced Alfven eigenmodes (TAEs) in the presence of fast ions in realistic tokamak fusion-grade plasmas is analyzed with a global, perturbative approach. Volume averaged fast particle betas for marginal stability are obtained and analyzed for a wide range of plasma parameters such as the fast ion radial density profile width, the ratio of birth velocity to the Alfven velocity on axis and the bulk plasma beta. The different stability behaviour of two types of TAEs (`internal` or `external`) is evidenced. (author) 19 figs., 22 refs.
Authors:
Villard, L; Brunner, S; Vaclavik, J [1] 
  1. Ecole Polytechnique Federale, Lausanne (Switzerland). Centre de Recherche en Physique des Plasma (CRPP)
Publication Date:
Sep 01, 1994
Product Type:
Technical Report
Report Number:
LRP-500/94
Reference Number:
SCA: 700340; PA: AIX-26:009170; EDB-95:011483; SN: 95001302009
Resource Relation:
Other Information: PBD: Sep 1994
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; PLASMA INSTABILITY; ALFVEN WAVES; TOKAMAK DEVICES; BETA RATIO; C CODES; GRAD-SHAFRANOV EQUATION; IONS; PERTURBATION THEORY; THEORETICAL DATA; VELOCITY; 700340; PLASMA WAVES, OSCILLATIONS, AND INSTABILITIES
OSTI ID:
10103987
Research Organizations:
Ecole Polytechnique Federale, Lausanne (Switzerland). Centre de Recherche en Physique des Plasma (CRPP)
Country of Origin:
Switzerland
Language:
English
Other Identifying Numbers:
Other: ON: DE95611650; TRN: CH9400372009170
Availability:
OSTI; NTIS; INIS
Submitting Site:
CHN
Size:
48 p.
Announcement Date:
Jun 30, 2005

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Citation Formats

Villard, L, Brunner, S, and Vaclavik, J. Global marginal stability of TAEs in the presence of fast ions. Switzerland: N. p., 1994. Web.
Villard, L, Brunner, S, & Vaclavik, J. Global marginal stability of TAEs in the presence of fast ions. Switzerland.
Villard, L, Brunner, S, and Vaclavik, J. 1994. "Global marginal stability of TAEs in the presence of fast ions." Switzerland.
@misc{etde_10103987,
title = {Global marginal stability of TAEs in the presence of fast ions}
 author = {Villard, L, Brunner, S, and Vaclavik, J}
 abstractNote = {The global stability of toroidicity-induced Alfven eigenmodes (TAEs) in the presence of fast ions in realistic tokamak fusion-grade plasmas is analyzed with a global, perturbative approach. Volume averaged fast particle betas for marginal stability are obtained and analyzed for a wide range of plasma parameters such as the fast ion radial density profile width, the ratio of birth velocity to the Alfven velocity on axis and the bulk plasma beta. The different stability behaviour of two types of TAEs (`internal` or `external`) is evidenced. (author) 19 figs., 22 refs.}
 place = {Switzerland}
 year = {1994}
 month = {Sep}
 }