Recent JET experiments on Alfven eigenmodes with intermediate toroidal mode numbers: measurements and modelling of n=3 toroidal Alfven eigenmodes with the TAEFL code

被引：12

作者：

Testa, D. ^{[1
]}

Spong, D. ^{[2
]}

Panis, T. ^{[1
]}

Blanchard, P. ^{[1
,3
]}

Fasoli, A. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Assoc EURATOM Confederat Suisse, CRPP, CH-1015 Lausanne, CH, Switzerland

[2] Oak Ridge Natl Lab, Fus Energy Theory Grp, Oak Ridge, TN USA

[3] EFDA CSU, Culham Sci Ctr, Abingdon, Oxon, England

来源：

NUCLEAR FUSION | 2011年 / 51卷 / 04期

基金：

瑞士国家科学基金会;

关键词：

TOKAMAK PLASMAS; GYROFLUID MODEL; BURNING PLASMA; INSTABILITIES; PARTICLES; STABILITY;

D O I：

10.1088/0029-5515/51/4/043009

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

This paper reports the results of recent experiments performed on the JET tokamak on Alfven eigenmodes (AEs) with toroidal mode number (n) in the range n = 3-15. The stability properties of these medium-n AEs are investigated experimentally using a new set of compact in-vessel antennas, providing a direct and real-time measurement of the frequency, damping rate and amplitude for each individual toroidal mode number. We report here the quantitative analysis of the measurements of the damping rate for stable n = 3 toroidal AEs as a function of the edge plasma elongation, and the theoretical analysis of these data with the TAEFL code. The TAEFL results are in excellent qualitative agreement with the measurements, reproducing well the experimental scaling of increasing damping rate versus increasing edge elongation, and in many cases are also quantitatively correct, with a difference with respect to the measurements below 30%, particularly for magnetic configurations that have a larger edge magnetic shear.

引用

页数：11

共 33 条

[31] Evidence for Alfven eigenmodes driven by alpha particles in D-3He fusion experiments on JET
Kiptily, V. G.
Fitzgerald, M.
Kazakov, Ye. O.
Ongena, J.
Nocente, M.
Sharapov, S. E.
Dreval, M.
Stancar, Z.
Craciunescu, T.
Garcia, J.
Giacomelli, L.
Goloborodko, V.
Oliver, H. J. C.
Weisen, H.
NUCLEAR FUSION, 2021, 61 (11)
[32] Optimization of the active MHD spectroscopy system on JET for the excitation of individual intermediate and high-n Alfven eigenmodes
Panis, T.
Testa, D.
Fasoli, A.
Klein, A.
Carfantan, H.
Blanchard, P.
NUCLEAR FUSION, 2010, 50 (08)
[33] Alpha particle-driven toroidal Alfven eigenmodes in Tokamak Fusion Test reactor deuterium-tritium plasmas: Theory and experiments
Fu, GY
Nazikian, R
Budny, R
Chang, Z
PHYSICS OF PLASMAS, 1998, 5 (12) : 4284 - 4291

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