期刊
PLASMA PHYSICS AND CONTROLLED FUSION
卷 57, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0741-3335/57/2/025016
关键词
tokamak; locked mode; error field; torque balance
资金
- US Department of Energy [DE-SC0008520, DE-AC05-06OR23100, DE-FC02-04ER54698, DE-AC02-09CH11466]
- U.S. Department of Energy (DOE) [DE-SC0008520] Funding Source: U.S. Department of Energy (DOE)
Detailed measurements from the DIII-D tokamak of the toroidal dynamics of error field penetration locked modes under the influence of slowly evolving external fields, enable study of the toroidal torques on the mode, including interaction with the intrinsic error field. The error field in these low density Ohmic discharges is well known based on the mode penetration threshold, allowing resonant and non-resonant torque effects to be distinguished. These m/n = 2/1 locked modes are found to be well described by a toroidal torque balance between the resonant interaction with n = 1 error fields, and a viscous torque in the electron diamagnetic drift direction which is observed to scale as the square of the perturbed field due to the island. Fitting to this empirical torque balance allows a time-resolved measurement of the intrinsic error field of the device, providing evidence for a time-dependent error field in DIII-D due to ramping of the Ohmic coil current.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据