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Experimental Study of the MHD Instabilities Controlling by External Magnetic Field System on SUNIST Spherical Tokamak

Author: JiangYanZuo
Tutor: ZhongFangChuan
School: Donghua University
Course: Plasma Physics
Keywords: Spherical tokamak MHD instability control External magnetic field
CLC: TL612.2
Type: Master's thesis
Year: 2011
Downloads: 18
Quote: 0
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Abstract


In the spherical tokamak of SUNIST to establish a plus n = 1 radial magnetic field , and to carry out the control of MHD instability . This radial magnetic field power to meet to within 1ms peak current and maintain more than 3 ms of the current platform, and with fast turn-off function . The tests show that this set of radial magnetic field system can provide stable and reliable in the center of the vacuum chamber mainly radial magnetic field to the n = 1 mode . After taking into account the external applied magnetic field of the vacuum chamber vortex formation and penetration experiments analyzed by the mode obtained the cap plus n = 1 radial magnetic system generates a magnetic field space mode mainly for the m / n = 4 / 1 of the mold , the magnetic field structure of the magnetic field structure in line with the numerical simulation in the design space . Experimental data show that the applied n = 1 radial magnetic field , the plasma MHD instabilities space model structure is changed , some of the major instability mode can be suppressed . In addition , the applied magnetic field , there is still room for improvement of the plasma current , enhance the role of plasma density .

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CLC: > Industrial Technology > Nuclear technology > Controlled thermonuclear reactions ( fusion reaction theory and experimental facilities) > Theory > Plasma Physics > Instability
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