New mode of operating a magnetized coaxial plasma gun for injecting magnetic helicity into a spheromak

被引：36
|
作者：
Woodruff, S [1 ]
Hill, DN [1 ]
Stallard, BW [1 ]
Bulmer, R [1 ]
Cohen, B [1 ]
Holcomb, CT [1 ]
Hooper, EB [1 ]
McLean, HS [1 ]
Moller, J [1 ]
Wood, RD [1 ]
机构：
[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
来源：
PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 09期
关键词：
D O I：
10.1103/PhysRevLett.90.095001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
By operating a magnetized coaxial plasma gun continuously with just sufficient current to enable plasma ejection, large gun-voltage spikes (similar to1 kV) are produced, giving the highest sustained voltage similar to500 V and highest sustained helicity injection rate observed in the Sustained Spheromak Physics Experiment. The spheromak magnetic field increases monotonically with time, exhibiting the lowest fluctuation levels observed during formation of any spheromak ((B) over tilde /Bgreater than or equal to2%). The results suggest an important mechanism for field generation by helicity injection, namely, the merging of helicity-carrying filaments.
引用
收藏
页码：1 / 095001
页数：4
相关论文
共 50 条
  • [21] Effects of bias magnetic field on plasma ejection and dynamic characteristics of a coaxial gun operated in gas-puffed mode
    Qi, Liangwen
    Song, Jian
    Zhao, Fantao
    Zhao, Chongxiao
    Yan, Huijie
    Wang, Dezhen
    PLASMA PHYSICS AND CONTROLLED FUSION, 2021, 63 (11)
  • [22] Detecting and tracking high-velocity plasmoids produced by a magnetized coaxial plasma gun in visible images
    Li, Zhaoxuan
    Ye, Yang
    Kong, Defeng
    Tan, Mingsheng
    Zhong, Fubin
    Wang, Mingyuan
    Qu, Chengming
    Zhao, Zhihao
    Wu, Yahao
    Zhang, Qiaofeng
    Wang, Chao
    Huang, Yanqing
    Zhang, Shoubiao
    REVIEW OF SCIENTIFIC INSTRUMENTS, 2024, 95 (12):
  • [23] Development of a magnetized coaxial plasma gun for simulation experiment of type-I ELM heat loads
    Sakuma, I.
    Shoda, K.
    Iwamoto, D.
    Kikuchi, Y.
    Fukumoto, N.
    Nagata, M.
    2011 IEEE/NPSS 24TH SYMPOSIUM ON FUSION ENGINEERING (SOFE), 2011,
  • [24] Application of a magnetized coaxial plasma gun for formation of a high-beta field-reversed configuration
    Nishida, T.
    Kiguchi, T.
    Asai, T.
    Takahashi, T.
    Matsuzawa, Y.
    Okano, T.
    Nogi, Y.
    FUSION ENGINEERING AND DESIGN, 2006, 81 (23-24) : 2843 - 2847
  • [25] Analysis and optimization of acceleration model in coaxial plasma gun in pre-fill mode
    Zhang, Jin-Shuo
    Sun, Hui
    Du, Zhi-Jie
    Zhang, Xue-Hang
    Xiao, Qing-Mei
    Fan, Jin-Rui
    Yan, Hui-Jie
    Song, Jian
    ACTA PHYSICA SINICA, 2023, 72 (15)
  • [26] A Thomson-type mass and energy spectrometer for characterizing ion energy distributions in a coaxial plasma gun operating in a gas-puff mode
    Rieker, G. B.
    Poehlmann, F. R.
    Cappelli, M. A.
    PHYSICS OF PLASMAS, 2013, 20 (07)
  • [27] The influence of magnetic islands on drift mode stability in magnetized plasma
    Wilson, H. R.
    Connor, J. W.
    PLASMA PHYSICS AND CONTROLLED FUSION, 2009, 51 (11)
  • [28] Observation of an enhanced magnetic helicity injection mode by a rotating plasma annulus
    Wang, Zhehui
    Si, Jiahe
    Li, Hui
    JOURNAL OF FUSION ENERGY, 2007, 26 (1-2) : 233 - 238
  • [29] Observation of an Enhanced Magnetic Helicity Injection Mode by a Rotating Plasma Annulus
    Zhehui Wang
    Jiahe Si
    Hui Li
    Journal of Fusion Energy, 2007, 26 : 233 - 238
  • [30] The internal magnetic field structures and current density profiles in the Helicity Injected Spherical Torus plasma driven by coaxial helicity injection
    Nagata, M
    Kanki, T
    Fukumoto, N
    Uyama, T
    PHYSICS OF PLASMAS, 2003, 10 (07) : 2932 - 2939
12345