Development of the saddle loop sensors on the J-TEXT tokamak

Development of the saddle loop sensors on the J-TEXT tokamak

To measure the amplitude and phase of the non-axisymmetric radial magnetic field generated by the locked mode, 12 saddle loop sensors are newly developed on the J-TEXT Tokamak. The saddle loop is made of flexible printed circuit (FPC) to adapt the complex installment environment and ensure the insta...

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Main Authors: Daojing Guo, Qiming Hu, Da Li, Nengchao Wang, Yonghua Ding, Chengshuo Shen, Zhuo Huang, Guo Xu, Qingquan Yu, Yuejin Tang, Ge Zhuang
Format: Article
Language:English
Published: AIP Publishing LLC 2017-10-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4993480
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spelling doaj-9f342ad02d9348e3a2640b63e698ce982020-11-24T21:35:39ZengAIP Publishing LLCAIP Advances2158-32262017-10-01710105002105002-710.1063/1.4993480009710ADVDevelopment of the saddle loop sensors on the J-TEXT tokamakDaojing Guo0Qiming Hu1Da Li2Nengchao Wang3Yonghua Ding4Chengshuo Shen5Zhuo Huang6Guo Xu7Qingquan Yu8Yuejin Tang9Ge Zhuang10State Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaMax-Planck-Institut für Plasmaphysik, 85748 Garching, GermanyState Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaTo measure the amplitude and phase of the non-axisymmetric radial magnetic field generated by the locked mode, 12 saddle loop sensors are newly developed on the J-TEXT Tokamak. The saddle loop is made of flexible printed circuit (FPC) to adapt the complex installment environment and ensure the installment accuracy. In the experiment, the saddle loop measures the radial magnetic field of locked mode and the axisymmetric equilibrium magnetic fields as well as that of the corresponding eddy current. Precise compensation for the fluxes induced by the horizontal and vertical field coils is realized by utilizing the lumped eddy current circuits based on an analytical model. By using this set of saddle loop sensors, the amplitude and phase of the m/n = 2/1 locked mode are clearly measured for the case of error field locking with slow rotation and the penetration of resonant magnetic perturbations (RMPs) respectively. Here, m and n are the poloidal and toroidal mode number.http://dx.doi.org/10.1063/1.4993480
collection DOAJ
language English
format Article
sources DOAJ
author Daojing Guo
Qiming Hu
Da Li
Nengchao Wang
Yonghua Ding
Chengshuo Shen
Zhuo Huang
Guo Xu
Qingquan Yu
Yuejin Tang
Ge Zhuang
spellingShingle Daojing Guo
Qiming Hu
Da Li
Nengchao Wang
Yonghua Ding
Chengshuo Shen
Zhuo Huang
Guo Xu
Qingquan Yu
Yuejin Tang
Ge Zhuang
Development of the saddle loop sensors on the J-TEXT tokamak
AIP Advances
author_facet Daojing Guo
Qiming Hu
Da Li
Nengchao Wang
Yonghua Ding
Chengshuo Shen
Zhuo Huang
Guo Xu
Qingquan Yu
Yuejin Tang
Ge Zhuang
author_sort Daojing Guo
title Development of the saddle loop sensors on the J-TEXT tokamak
title_short Development of the saddle loop sensors on the J-TEXT tokamak
title_full Development of the saddle loop sensors on the J-TEXT tokamak
title_fullStr Development of the saddle loop sensors on the J-TEXT tokamak
title_full_unstemmed Development of the saddle loop sensors on the J-TEXT tokamak
title_sort development of the saddle loop sensors on the j-text tokamak
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2017-10-01
description To measure the amplitude and phase of the non-axisymmetric radial magnetic field generated by the locked mode, 12 saddle loop sensors are newly developed on the J-TEXT Tokamak. The saddle loop is made of flexible printed circuit (FPC) to adapt the complex installment environment and ensure the installment accuracy. In the experiment, the saddle loop measures the radial magnetic field of locked mode and the axisymmetric equilibrium magnetic fields as well as that of the corresponding eddy current. Precise compensation for the fluxes induced by the horizontal and vertical field coils is realized by utilizing the lumped eddy current circuits based on an analytical model. By using this set of saddle loop sensors, the amplitude and phase of the m/n = 2/1 locked mode are clearly measured for the case of error field locking with slow rotation and the penetration of resonant magnetic perturbations (RMPs) respectively. Here, m and n are the poloidal and toroidal mode number.
url http://dx.doi.org/10.1063/1.4993480
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