This title appears in the Scientific Report :
2010
Please use the identifier:
http://dx.doi.org/10.1088/0741-3335/52/10/105007 in citations.
Toroidal rotation braking with n = 1 magnetic perturbation field on JET
Toroidal rotation braking with n = 1 magnetic perturbation field on JET
A strong toroidal rotation braking has been observed in plasmas with application of an n = 1 magnetic perturbation field on the JET tokamak. Calculation results from the momentum transport analysis show that the torque induced by the n = 1 perturbation field has a global profile. The maximal value o...
Saved in:
Personal Name(s): | Sun, Y. |
---|---|
Liang, Y. / Koslowski, H. R. / Jachmich, S. / Alfier, A. / Asunta, O. / Corrigan, G. / Giroud, C. / Gryaznevich, M.P. / Harting, D. / Hender, T. / Nardon, E. / Naulin, V. / Parail, V. / Tala, T. / Wiegmann, C. / Wiesen, S. | |
Contributing Institute: |
Plasmaphysik; IEK-4 |
Published in: | Plasma physics and controlled fusion, 52 (2010) S. 105007 |
Imprint: |
Bristol
IOP Publ.
2010
|
Physical Description: |
105007 |
DOI: |
10.1088/0741-3335/52/10/105007 |
Document Type: |
Journal Article |
Research Program: |
Fusion |
Series Title: |
Plasma Physics and Controlled Fusion
52 |
Subject (ZB): | |
Publikationsportal JuSER |
A strong toroidal rotation braking has been observed in plasmas with application of an n = 1 magnetic perturbation field on the JET tokamak. Calculation results from the momentum transport analysis show that the torque induced by the n = 1 perturbation field has a global profile. The maximal value of this torque is at the plasma core region (rho < 0.4) and it is about half of the neutral beam injection torque. The calculation shows that the plasma is mainly in the nu-root nu regime in the plasma core, but it is close to the transition between the 1/nu and nu-root nu regimes. The neoclassical toroidal viscosity (NTV) torque in the 1/nu and nu-root nu regimes is calculated. The observed torque is of a magnitude in between that of the NTV torque in the 1/nu and nu-root nu regimes. The NTV torque in the nu-root nu regimes is enhanced using the Lagrangian variation of the magnetic field strength. However, it is still smaller than the observed torque by one order of magnitude. |