
The Library
The effect of plasma triangularity on turbulent transport: modeling TCV experiments by linear and non-linear gyrokinetic simulations
Tools
Marinoni, A., Brunner, S., Camenen, Y., Coda, S., Graves, J. P., Lapillonne, X., Pochelon, A., Sauter, O., Villard, L. and Team, T. C. V. (2009) The effect of plasma triangularity on turbulent transport: modeling TCV experiments by linear and non-linear gyrokinetic simulations. Plasma Physics and Controlled Fusion, Vol.51 (No.5). Article no. 055016. doi:10.1088/0741-3335/51/5/055016 ISSN 0741-3335.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Official URL: http://dx.doi.org/10.1088/0741-3335/51/5/055016
Abstract
The effect of plasma shape on confinement has been experimentally explored in the TCV tokamak revealing that the core electron heat transport is significantly reduced by a negative triangularity configuration, which could indicate a (partial) stabilization of the microinstabilities at play in a conventional positive triangularity configuration.
This work is a theoretical investigation of the effect exerted by triangularity on plasma turbulence. In particular, it compares the TCV experimental results with non-linear local gyrokinetic simulations performed on the basis of actual MHD equilibrium reconstructions.
In both the linear and non-linear phases, negative triangularity is found to have a stabilizing influence on ion-scale instabilities, specifically on the so-called trapped electron mode (TEM) which is the dominant instability in the conditions of the TCV experiments considered; more specifically, the variation of the heat flux with triangularity calculated by the non-linear simulations is in fair agreement with the experimental results.
The resulting stabilization is a result of a rather complex modification of the toroidal precessional drift of trapped particles exerted by negative triangularity.
Item Type: | Journal Article | ||||
---|---|---|---|---|---|
Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Plasma Physics and Controlled Fusion | ||||
Publisher: | Institute of Physics Publishing Ltd. | ||||
ISSN: | 0741-3335 | ||||
Official Date: | May 2009 | ||||
Dates: |
|
||||
Volume: | Vol.51 | ||||
Number: | No.5 | ||||
Number of Pages: | 19 | ||||
Page Range: | Article no. 055016 | ||||
DOI: | 10.1088/0741-3335/51/5/055016 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
Data sourced from Thomson Reuters' Web of Knowledge
Request changes or add full text files to a record
Repository staff actions (login required)
![]() |
View Item |