Impurity transport driven by fishbones in MAST

Tools

Cecconello, M. and Jones, O.M. and Garzotti, L. and McClements, K.G. and Carr, M. and Henderson, S.S. and Sharapov, S.E. and Klimek, I. (2015) Impurity transport driven by fishbones in MAST. Nuclear Fusion, 55 (3). 032002. ISSN 0029-5515 (https://doi.org/10.1088/0029-5515/55/3/032002)

Full text not available in this repository.Request a copy

Abstract

In MAST, bursting toroidal Alfvén eigenmodes and fishbones are observed to give rise to an asymmetric perturbation to the soft x-ray (SXR) emission close to the magnetic axis which grows and decays on the time scale of the fishbone evolution. As the fishbone nears its maximum amplitude, the SXR emission starts to increase (decrease) at radial positions smaller (larger) than the radial position of the magnetic axis. This trend in the SXR emission persists for a few milliseconds, until the fishbone starts to decay in amplitude and the slower overall trend of the SXR emission once again becomes dominant. A preliminary analysis suggests that the change in the SXR emission is due to the localized accumulation of high-Z impurities, sustained against parallel transport by the effects of fishbones on the fast ion population.

ORCID iDs

Cecconello, M., Jones, O.M., Garzotti, L., McClements, K.G., Carr, M., Henderson, S.S. ORCID logoORCID: https://orcid.org/0000-0002-8205-4437, Sharapov, S.E. and Klimek, I.;
  • Item type:Article
    ID code:53855
    Dates:
    Date
    Event
    6 February 2015
    Published
    15 January 2015
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:23 Jul 2015 15:06
    Last modified:11 Nov 2024 11:05
    URI:https://strathprints.strath.ac.uk/id/eprint/53855
CORE (COnnecting REpositories)