Charge dependence of neoclassical and turbulent transport of light impurities on MAST

Authors :: Henderson, S. S.
Garzotti, L.
Casson, F. J.
Dickinson, D.
O'Mullane, M.
Patel, A.
Roach, C. M.
Summers, H. P.
Tanabe, H.
Valovic, M.
team, the MAST
Source :: Plasma Physics and Controlled Fusion, Vol. 57, No. 9, September 2015, pp. 095001
Publication Year :: 2015
Abstract: Carbon and nitrogen impurity transport coefficients are determined from gas puff experiments carried out during repeat L-mode discharges on the Mega-Amp Spherical Tokamak (MAST) and compared against a previous analysis of helium impurity transport on MAST. The impurity density profiles are measured on the low-field side of the plasma, therefore this paper focuses on light impurities where the impact of poloidal asymmetries on impurity transport is predicted to be negligible. A weak screening of carbon and nitrogen is found in the plasma core, whereas the helium density profile is peaked over the entire plasma radius.<br />Comment: 17 pages, 7 figures

Database :: arXiv
Journal :: Plasma Physics and Controlled Fusion, Vol. 57, No. 9, September 2015, pp. 095001
Publication Type :: Report
Accession number :: edsarx.1508.00424
Document Type :: Working Paper
Full Text :: https://doi.org/10.1088/0741-3335/57/9/095001

Full Text Access

Tools