The effect of a radial electric field on the neoclassical tearing mode driven losses of energetic trapped ions

Hugo Ferrari; Youwen Sun; Kaiyang He; Ricardo Farengo; Pablo García-Martínez

Plasma Science and Technology > 2025 > Accepted Manuscript

Hugo Ferrari, Youwen Sun, Kaiyang He, Ricardo Farengo, Pablo García-Martínez. The effect of a radial electric field on the neoclassical tearing mode driven losses of energetic trapped ions[J]. Plasma Science and Technology.

Citation:

PDF (2321 KB)

The effect of a radial electric field on the neoclassical tearing mode driven losses of energetic trapped ions

Comisión Nacional de Energía Atómica Gerencia de Física, CAB
Institute of Plasma Physics Chinese Academy of Sciences
Chinese Academy of Sciences Institute of Plasma Physics
Gerencia de Fïsica
CONICET Patagonia Norte

More Information

Received Date: November 12, 2024
Revised Date: March 16, 2025
Accepted Date: March 18, 2025
Available Online: March 19, 2025

Graphical Abstract

Abstract

Abstract

A rotating neoclassical tearing mode (NTM) can increase the trapped ion losses when the frequency of the NTM is close to the precessional frequency of the trapped particles. When an equilibrium electric field, produced by the rotation of the plasma and the density gradient, is present, the average precessional frequency of the trapped ions changes and so does the mode frequency corresponding to the maximum loss rate. Our results show that when an electric field with a value of 11.2 kV/m at q = 2 is included the maximum of the trapped ion losses increases from 27 % to 30 % based on EAST equilibrium.
- Ion Losses,
- NTM,
- Fast Particles,
- Tokamaks,
- Plasma Rotation,
- Radial Electric Field

FullText(HTML)

References (0)

[1]	Haibing LI (李海冰), Jie ZHU (朱杰), Wei YANG (杨威), Xu ZHANG (张旭), Donglai WANG (王东来), Junyu ZHU (朱俊谕), Xingming BIAN (卞星明). Humidity effects on the ground-level resultant electric field of positive DC conductors[J]. Plasma Science and Technology, 2019, 21(7): 74001-074001. DOI: 10.1088/2058-6272/ab0a3f
[2]	Wenjia WANG (王文家), Deng ZHOU (周登), Yue MING (明玥). The residual zonal flow in tokamak plasmas with a poloidal electric field[J]. Plasma Science and Technology, 2019, 21(1): 15101-015101. DOI: 10.1088/2058-6272/aadd8e
[3]	Yue MING (明玥), Deng ZHOU (周登), Wenjia WANG (王文家). Geodesic acoustic modes in tokamak plasmas with anisotropic distribution and a radial equilibrium electric field[J]. Plasma Science and Technology, 2018, 20(8): 85101-085101. DOI: 10.1088/2058-6272/aabc5c
[4]	Carlo POGGI, Théo GUILLAUME, Fabrice DOVEIL, Laurence CHÉRIGIER-KOVACIC. Estimation of the Lyman-α signal of the EFILE diagnostic under static or radiofrequency electric field in vacuum[J]. Plasma Science and Technology, 2018, 20(7): 74001-074001. DOI: 10.1088/2058-6272/aabde3
[5]	Y WANG (王宇), G ZHAO (赵高), C NIU (牛晨), Z W LIU (刘忠伟), J T OUYANG (欧阳吉庭), Q CHEN (陈强). Reversal of radial glow distribution in helicon plasma induced by reversed magnetic field[J]. Plasma Science and Technology, 2017, 19(2): 24003-024003. DOI: 10.1088/2058-6272/19/2/024003
[6]	CHANG Lei (苌磊), LI Qingchong (李庆冲), ZHANG Huijie (张辉洁), LI Yinghong (李应红), WU Yun (吴云), ZHANG Bailing (张百灵), ZHUANG Zhong (庄重). Effect of Radial Density Configuration on Wave Field and Energy Flow in Axially Uniform Helicon Plasma[J]. Plasma Science and Technology, 2016, 18(8): 848-854. DOI: 10.1088/1009-0630/18/8/10
[7]	RAN Huijuan(冉慧娟), WANG Lei(王磊), WANG Jue(王珏), WANG Tao(王涛), YAN Ping(严萍). Discharge Characteristics of SF₆ in a Non-Uniform Electric Field Under Repetitive Nanosecond Pulses[J]. Plasma Science and Technology, 2014, 16(5): 465-470. DOI: 10.1088/1009-0630/16/5/05
[8]	LIU Wenzheng(刘文正), WANG Hao(王浩), DOU Zhijun(窦志军). Impact of the Insulator on the Electric Field and Generation Characteristics of Vacuum Arc Metal Plasmas[J]. Plasma Science and Technology, 2014, 16(2): 134-141. DOI: 10.1088/1009-0630/16/2/09
[9]	Azusa FUKANO, Akiyoshi HATAYAMA. Electric Potential in Surface Produced Negative Ion Source with Magnetic Field Increasing Toward a Wall[J]. Plasma Science and Technology, 2013, 15(3): 266-270. DOI: 10.1088/1009-0630/15/3/15
[10]	T. TAKIZUKA. Development of the PARASOL Code and Full Particle Simulation of Tokamak Plasma with an Open-Field SOL-Divertor Region Using PARASOL[J]. Plasma Science and Technology, 2011, 13(3): 316-325.