Toroidal torques due to n=1 magnetic perturbations in ITER baseline scenario  

作　　者：Jingwei LI Li LI Yueqiang LIU Yunfeng LIANG Yanfei WANG Lu TIAN Zhongqing LIU Fangchuan ZHONG 李经纬;李莉;刘钺强;梁云峰;王燕飞;田璐;刘仲庆;钟方川(College of Physics,Donghua University,Shanghai 201620,People’s Republic of China;Member of Magnetic Confinement Fusion Research Centre,Ministry of Education,Shanghai 201620,People’s Republic of China;General Atomics,San Diego CA 92186-5608,United States of America;Institut für Energie-und Klimaforschung–Plasmaphysik,Partner of the Trilateral Euregio Cluster(TEC),Forschungszentrum Juülich GmbH,Jülich 52425,Germany)

机构地区：[1]College of Physics,Donghua University,Shanghai 201620,People’s Republic of China [2]Member of Magnetic Confinement Fusion Research Centre,Ministry of Education,Shanghai 201620,People’s Republic of China [3]General Atomics,San Diego CA 92186-5608,United States of America [4]Institut für Energie-und Klimaforschung–Plasmaphysik,Partner of the Trilateral Euregio Cluster(TEC),Forschungszentrum Juülich GmbH,Jülich 52425,Germany

出　　处：《Plasma Science and Technology》2025年第1期39-51,共13页等离子体科学和技术(英文版)

基　　金：funded by National Natural Science Foundation of China(NSFC)(Nos.12075053,11505021 and 11975068);by National Key R&D Program of China(No.2022YFE 03060002);by Fundamental Research Funds for the Central Universities(No.2232024G-10);supported by the U.S.DoE Office of Science(No.DE-FG02–95ER54309)。

摘　　要：Toroidal torques,generated by the resonant magnetic perturbation(RMP)and acting on the plasma column,are numerically systematically investigated for an ITER baseline scenario.The neoclassical toroidal viscosity(NTV),in particular the resonant portion,is found to provide the dominant contribution to the total toroidal torque under the slow plasma flow regime in ITER.While the electromagnetic torque always opposes the plasma flow,the toroidal torque associated with the Reynolds stress enhances the plasma flow independent of the flow direction.A peculiar double-peak structure for the net NTV torque is robustly computed for ITER,as the toroidal rotation frequency is scanned near the zero value.This structure is found to be ultimately due to a non-monotonic behavior of the wave-particle resonance integral(over the particle pitch angle)in the superbanana plateau NTV regime in ITER.These findings are qualitatively insensitive to variations of a range of factors including the wall resistivity,the plasma pedestal flow and the assumed frequency of the rotating RMP field.

关 键 词：toroidal torques resonant magnetic perturbation fieds plasma flow ITER baseline scenario 

分 类 号：O53[理学—等离子体物理]