TY - JOUR
T1 - Analysis of Tungsten Transport in JT-60U Plasmas*)
AU - Shimizu, Yusuke
AU - Fujita, Takaaki
AU - Arimoto, Hideki
AU - Nakano, Tomohide
AU - Hoshino, Kazuo
AU - Hayashi, Nobuhiko
N1 - Funding Information:
This study was carried out under the National Centralized Tokamak Collaborative Research Program in JAEA. This study was supported by JSPS KAKENHI Grant Number 25420895.
Publisher Copyright:
© 2015 The Japan Society of Plasma Science and Nuclear Fusion Research
PY - 2015
Y1 - 2015
N2 - In JT-60U plasmas, increasing the toroidal rotation opposite to the plasma current (CTR rotation) enhances tungsten accumulation. Hoshino et al. have proposed two pinch models (i.e., PHZ pinch and Er pinch), which account for the effects of toroidal rotation and the radial electric field, respectively. We introduce them to the integrated transport code TOTAL. We study the dependence of tungsten accumulation on the toroidal rotation in TOTAL simulations of JT-60U plasmas. Because the assumptions of the Er pinch model are incompatible with the experimental conditions, we study the effect of the PHZ pinch only. The tungsten accumulation was four times higher at high toroidal rotation velocity than at low toroidal rotation velocity, replicating the experimental trend. The tungsten accumulation in the PHZ pinch model was 1.4 - 2.2 times higher than predicted by neoclassical transport only.
AB - In JT-60U plasmas, increasing the toroidal rotation opposite to the plasma current (CTR rotation) enhances tungsten accumulation. Hoshino et al. have proposed two pinch models (i.e., PHZ pinch and Er pinch), which account for the effects of toroidal rotation and the radial electric field, respectively. We introduce them to the integrated transport code TOTAL. We study the dependence of tungsten accumulation on the toroidal rotation in TOTAL simulations of JT-60U plasmas. Because the assumptions of the Er pinch model are incompatible with the experimental conditions, we study the effect of the PHZ pinch only. The tungsten accumulation was four times higher at high toroidal rotation velocity than at low toroidal rotation velocity, replicating the experimental trend. The tungsten accumulation in the PHZ pinch model was 1.4 - 2.2 times higher than predicted by neoclassical transport only.
KW - Er pinch
KW - neoclassical transport
KW - PHZ pinch
KW - toroidal rotation
KW - tungsten accumulation
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U2 - 10.1585/pfr.10.3403062
DO - 10.1585/pfr.10.3403062
M3 - Article
AN - SCOPUS:85108618432
SN - 1880-6821
VL - 10
SP - 1
EP - 4
JO - Plasma and Fusion Research
JF - Plasma and Fusion Research
ER -