The eddy current probe array for Keda Torus eXperiment

doi:10.1063/1.4966988

	The eddy current probe array for Keda Torus eXperiment
	Li, Zichao 1; Li, Hong 1; Tu, Cui 1; Hu, Jintong 1; You, Wei 1; Luo, Bing 1; Tan, Mingsheng 1; Adil, Yolbarsop 1; Wu, Yanqi 1; Shen, Biao 2
刊名	REVIEW OF SCIENTIFIC INSTRUMENTS
	2016-11-01
卷号	87 页码:8
ISSN号	0034-6748
DOI	10.1063/1.4966988
英文摘要	In a reversed field pinch device, the conductive shell is placed as close as possible to the plasma so as to balance the plasma during discharge. Plasma instabilities such as the resistive wall mode and certain tearing modes, which restrain the plasma high parameter operation, respond closely with conditions in the wall, in essence the eddy current present. Also, the effect of eddy currents induced by the external coils cannot be ignored when active control is applied to control instabilities. One diagnostic tool, an eddy current probe array, detects the eddy current in the composite shell. Magnetic probes measuring differences between the inner and outer magnetic fields enable estimates of the amplitude and angle of these eddy currents. Along with measurements of currents through the copper bolts connecting the poloidal shield copper shells, we can obtain the eddy currents over the entire shell. Magnetic field and eddy current resolutions approach 2 G and 6 A, respectively. Additionally, the vortex electric field can be obtained by eddy current probes. As the conductivity of the composite shell is high, the eddy current probe array is very sensitive to the electric field and has a resolution of 0.2 mV/cm. In a bench test experiment using a 1/4 vacuum vessel, measurements of the induced eddy currents are compared with simulation results based on a 3D electromagnetic model. The preliminary data of the eddy currents have been detected during discharges in a Keda Torus eXperiment device. The typical value of toroidal and poloidal eddy currents across the magnetic probe coverage rectangular area could reach 3.0 kA and 1.3 kA, respectively. Published by AIP Publishing.
WOS关键词	TOKAMAK ; SYSTEM ; PLASMA ; RFX
WOS研究方向	Instruments & Instrumentation ; Physics
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000390242300339
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/46938]
专题	中国科学院近代物理研究所
通讯作者	Li, Hong
作者单位	1.Univ Sci & Technol China, Dept Modern Phys, CAS Key Lab Geospace Environm, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 3.Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA 4.Univ Saskatchewan, Plasma Phys Lab, Saskatoon, SK 7N 5E2, Canada
推荐引用方式 GB/T 7714	Li, Zichao,Li, Hong,Tu, Cui,et al. The eddy current probe array for Keda Torus eXperiment[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,2016,87:8.
APA	Li, Zichao.,Li, Hong.,Tu, Cui.,Hu, Jintong.,You, Wei.,...&Liu, Wandong.(2016).The eddy current probe array for Keda Torus eXperiment.REVIEW OF SCIENTIFIC INSTRUMENTS,87,8.
MLA	Li, Zichao,et al."The eddy current probe array for Keda Torus eXperiment".REVIEW OF SCIENTIFIC INSTRUMENTS 87(2016):8.