Simultaneous analysis of ion and electron heat transport by power modulation in JET

被引：24

作者：

Ryter, F. ^{[1
]}

Angioni, C. ^{[1
]}

Giroud, C. ^{[2
]}

Peeters, A. G. ^{[3
]}

Biewer, T. ^{[4
]}

Bilato, R. ^{[1
]}

Joffrin, E. ^{[5
]}

Johnson, T. ^{[6
]}

Leggate, H. ^{[2
]}

Lerche, E. ^{[7
]}

Madison, G. ^{[2
]}

Mantica, P. ^{[8
]}

Van Eester, D. ^{[7
]}

Voitsekhovitch, I. ^{[2
]}

机构：

[1] Max Planck Inst Plasma Phys, EURATOM Assoc, D-85748 Garching, Germany

[2] EURATOM UKAEA Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[3] Univ Warwick, Ctr Fus Space & Astrophys, Coventry 7AL, W Midlands, England

[4] Oak Ridge Natl Lab, Div Fus Energy, Oak Ridge, TN 37831 USA

[5] JET EFDA CSU, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[6] EURATOM VR Assoc, EES, KTH, S-10044 Stockholm, Sweden

[7] Assoc Euratom Belgian State, LPP ERM KMS, TEC, B-1000 Brussels, Belgium

[8] EURATOM ENEA CNR Assoc, Ist Fis Plasma, I-20125 Milan, Italy

来源：

NUCLEAR FUSION | 2011年 / 51卷 / 11期

关键词：

ASDEX UPGRADE; TEMPERATURE GRADIENT; ECH MODULATION; FUSION PLASMAS; MODE PLASMAS; CONFINEMENT; TOKAMAK; SIMULATIONS; BOUNDARIES; PROFILE;

D O I：

10.1088/0029-5515/51/11/113016

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：

Heating power modulation experiments using ion cyclotron resonance heating (ICRH) in the (3)He minority scheme have been performed in the JET tokamak to investigate heat transport properties. This RF scheme provides a dominant localized ion heating, but also some electron heating, and therefore both ion and electron heat channels were modulated. This allows us to carry out a simultaneous transport analysis of ion and electron heat transport channels, including transient transport phenomena. This also provides an experimental assessment of the ICRH heat sources of the (3)He scheme. The modulation approach, so far widely used for electron transport studies, has been validated for ion heat transport in these experiments and yields results on stiffness and threshold of the ion temperature gradient (ITG)-driven ion heat transport. The results for the electron channel demonstrate the importance of the ITG-driven, off-diagonal, contribution to electron heat transport in plasmas with significant ion heating.

引用

页数：34

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