| SUNIST上MHD扰动测量和模式分析 |
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| 引用本文： | 吴彦斌,曾龙,钟方川,谭熠,高喆.SUNIST上MHD扰动测量和模式分析[J].东华大学学报(自然科学版),2011,37(1):120-125. |
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| 作者姓名： | 吴彦斌 曾龙 钟方川 谭熠 高喆 |
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| 作者单位： | 1. 东华大学,理学院,上海,201620
2. 清华大学,工程物理系,北京,100084 |
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| 基金项目： | 国家自然科学基金资助项目，973课题资助项目 |
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| 摘 要： | 磁流体(Magneto Hydrodynamic,MHD)不稳定性是托卡马克磁约束聚变等离子体中的基本物理现象,是影响装置放电稳定性及等离子体约束性能的重要因素.通过磁探针诊断对Sino-United Spherical Tokamak(SUNIST)上的Mirnov扰动进行测量和分析,利用奇异值分解(SVD)方法首次对扰动的环向和极向模数进行分辨,并给出放电过程中的模数时间演化过程.
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| 关 键 词： | SUNIST MHD扰动 奇异值分解(SVD) 模数分析 |
Measurements and Mode Analysis of MHD Fluctuations on SUNIST |
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| WU Yan-bin,ZENG Long,ZHONG Fang-chuan,TAN Yi,GAO Zhe.Measurements and Mode Analysis of MHD Fluctuations on SUNIST[J].Journal of Donghua University,2011,37(1):120-125. |
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| Authors: | WU Yan-bin ZENG Long ZHONG Fang-chuan TAN Yi GAO Zhe |
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| Institution: | WU Yan-bin1,ZENG Long2,ZHONG Fang-chuan1,TAN Yi2,GAO Zhe2(1.College of Science,Donghua University,Shanghai 201620,China,2.Department of Engineering Physics,Tsinghua University,Beijing 100084,China) |
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| Abstract: | Magneto hydrodynamic(MHD)instabilities are essential features in the magnetical confinement tokamak which plasma play an important role in discharge stabilization and plasma confinement.The Mirnov fluctuations are measured and analysed by magnetic measurement system on Sino-United Spherical Tokamak(SUNIST).The toroidal and poloidal numbers of Mirnov fluctuations are distinguished by using singular value decomposition(SVD),and the time evolution of the mode numbers during a discharge is present. |
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| Keywords: | SUNIST |
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