Non-resonant magnetic braking on JET and TEXTOR

Publication: Research - peer-reviewJournal article – Annual report year: 2012

  • Author: Sun, Y., United Kingdom

    Culham Science Centre, United Kingdom

  • Author: Liang, Y., United Kingdom

    Culham Science Centre, United Kingdom

  • Author: Shaing, K.C., China

    Institute for Space, Astrophysical and Plasma Sciences, National Cheng Kung Unversity, China

  • Author: Liu, Y.Q., United Kingdom

    Culham Science Centre, United Kingdom

  • Author: Koslowski, H.R., United Kingdom

    Culham Science Centre, United Kingdom

  • Author: Jachmich, S., Belgium

    Koninklijke Militaire School-Ecole Royale Militaire, Belgium

  • Author: Alper, B., United Kingdom

    Culham Science Centre, United Kingdom

  • Author: Alfier, A., Italy

    Associazione EURATOM-ENEA sulla Fusione, Consorzio RFX Padova, Italy

  • Author: Asunta, O., Finland

    Aalto University, Finland

  • Author: Buratti, P., Italy

    Associazione EURATOM-ENEA sulla Fusione, C.R. Frascati, Italy

  • Author: Corrigan, G., United Kingdom

    Culham Science Centre, United Kingdom

  • Author: Delabie, E., United Kingdom

    Culham Science Centre, United Kingdom

  • Author: Giroud, C., United Kingdom

    Culham Science Centre, United Kingdom

  • Author: Gryaznevich, M.P., United Kingdom

    Culham Science Centre, United Kingdom

  • Author: Harting, D., United Kingdom

    Culham Science Centre, United Kingdom

  • Author: Hender, T., United Kingdom

    Culham Science Centre, United Kingdom

  • Author: Nardon, E., France

    CEA/IRFM Cadarache, France

  • Author: Naulin, Volker

    Plasma physics and fusion energy, Department of Physics, Technical University of Denmark, Fysikvej, 2800, Kgs. Lyngby, Denmark

  • Author: Parail, V., United Kingdom

    Culham Science Centre, United Kingdom

  • Author: Tala, T., Finland

    VTT, Finland

  • Author: Wiegmann, C., United Kingdom

    Culham Science Centre, United Kingdom

  • Author: Wiesen, S., United Kingdom

    Culham Science Centre, United Kingdom

  • Author: Zhang, T., United Kingdom

    Culham Science Centre, United Kingdom

View graph of relations

The non-resonant magnetic braking effect induced by a non-axisymmetric magnetic perturbation is investigated on JET and TEXTOR. The collisionality dependence of the torque induced by the n = 1, where n is the toroidal mode number, magnetic perturbation generated by the error field correction coils on JET is observed. The observed torque is located mainly in the plasma core (normalized radius ρ < 0.4) and increases with decreasing collisionality. The neoclassical toroidal plasma viscosity (NTV) torque in the collisionless regime is modelled using the numerical solution of the bounce-averaged drift kinetic equation. The calculated collisionality dependence of the NTV torque is in good agreement with the experimental observation on JET. The reason for this collisionality dependence is that the torque in the plasma core on JET mainly comes from the flux of the trapped electrons, which are still mainly in the 1/ν regime. The strongest NTV torque on JET is also located near the plasma core. The magnitude of the NTV torque strongly depends on the plasma response, which is also discussed in this paper. There is no obvious braking effect with n = 2 magnetic perturbation generated by the dynamic ergodic divertor on TEXTOR, which is consistent with the NTV modelling.

Original languageEnglish
JournalNuclear Fusion
Publication date2012
Volume52
Pages083007
Number of pages13
ISSN0029-5515
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 3

Keywords

  • Plasma physics
Download as:
Download as PDF
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
PDF
Download as HTML
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
HTML
Download as Word
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
Word

ID: 10001061