Advanced Search+
LI Li(李莉), LIU Yue (刘悦), XU Xinyang(许欣洋), XIA Xinnian(夏新念). The Effect of Equilibrium Current Profiles on MHD Instabilities in Tokamaks[J]. Plasma Science and Technology, 2012, 14(1): 14-19. DOI: 10.1088/1009-0630/14/1/04
Citation: LI Li(李莉), LIU Yue (刘悦), XU Xinyang(许欣洋), XIA Xinnian(夏新念). The Effect of Equilibrium Current Profiles on MHD Instabilities in Tokamaks[J]. Plasma Science and Technology, 2012, 14(1): 14-19. DOI: 10.1088/1009-0630/14/1/04

The Effect of Equilibrium Current Profiles on MHD Instabilities in Tokamaks

More Information
  • Received Date: August 05, 2011
  • A cylindrical model of linear MHD instabilities in tokamaks is presented. In the model, the cylindrical plasma is surrounded by a vacuum which is divided into inner and outer vacuum areas by a conducting wall. Linearized resistivity MHD equations with plasma viscosity are adopted to describe our model, and the equations are solved numerically as an initial value problem. Some of the results are used as benchmark tests for the code, and then a series of equilibrium current profiles are used to simulate the bootstrap current profiles in actual experiments with a bump on tail. Thus the effects of these kinds of profiles on MHD instabilities in tokamaks are revealed. From the analysis of the numerical results, it is found that more plasma can be confined when the center of the current bump is closer to the plasma surface, and a higher and narrower current bump has a better stabilizing effect on the MHD instabilities.
  • Related Articles

    [1]Wenjin Chen, Min Zhang, Zhiwei Ma. Interaction of dynamic magnetic island with bootstrap current in toroidal plasma[J]. Plasma Science and Technology. DOI: 10.1088/2058-6272/adac91
    [2]Ricardo FARENGO, Pablo L GARCÍA-MARTÍNEZ, Hugo E FERRARI. A simple and fast method to calculate the coil currents and the external poloidal flux and magnetic field for fixed boundary equilibria[J]. Plasma Science and Technology, 2024, 26(11): 115103. DOI: 10.1088/2058-6272/ad70e0
    [3]Hanyu ZHANG, Lina ZHOU, Yueqiang LIU, Guangzhou HAO, Shuo WANG, Xu YANG, Yutian MIAO, Ping DUAN, Long CHEN. Deep learning approaches to recover the plasma current density profile from the safety factor based on Grad–Shafranov solutions across multiple tokamaks[J]. Plasma Science and Technology, 2024, 26(5): 055101. DOI: 10.1088/2058-6272/ad13e3
    [4]Yemin HU, Liuqing WANG, Shuhang BAI, Zhi YU, Tianyang XIA. Numerical analysis for the free-boundary current reversal equilibrium in the AC plasma current operation in a tokamak[J]. Plasma Science and Technology, 2024, 26(2): 025102. DOI: 10.1088/2058-6272/ad0c98
    [5]H R MIRZAEI, R AMROLLAHI. Design, simulation and construction of the Taban tokamak[J]. Plasma Science and Technology, 2018, 20(4): 45103-045103. DOI: 10.1088/2058-6272/aaa669
    [6]Hailong GAO (高海龙), Tao XU (徐涛), Zhongyong CHEN (陈忠勇), Ge ZHUANG (庄革). Plasma equilibrium calculation in J-TEXT tokamak[J]. Plasma Science and Technology, 2017, 19(11): 115101. DOI: 10.1088/2058-6272/aa7f26
    [7]LIU Chao(刘超), LIU Yue(刘悦), MA Zhaoshuai(马照帅). Effect of Equilibrium Current Profiles on External Kink Modes in Tokamaks[J]. Plasma Science and Technology, 2014, 16(8): 726-731. DOI: 10.1088/1009-0630/16/8/02
    [8]F. L. BRAGA. MHD Equilibrium with Reversed Current Density and Magnetic Islands Revisited: the Vacuum Vector Potential Calculus[J]. Plasma Science and Technology, 2013, 15(10): 985-988. DOI: 10.1088/1009-0630/15/10/05
    [9]QU Hongpeng (曲洪鹏). Ion-Banana-Orbit-Width Effect on Bootstrap Current for Small Magnetic Islands[J]. Plasma Science and Technology, 2013, 15(9): 852-856. DOI: 10.1088/1009-0630/15/9/03
    [10]HE Zhixiong, DONG Jiaqi, HE Hongda, JIANG Haibin, GAO Zhe, ZHANG Jinhua. MHD Equilibrium Configuration Reconstructions for HL-2A Tokamak[J]. Plasma Science and Technology, 2011, 13(4): 424-430.

Catalog

    Article views (770) PDF downloads (1653) Cited by()

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return