| Magnetic Fluctuation Measurement in Sino United Spherical Tokamak Plasma |
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| 引用本文： | 刘飞 王文浩 何也熙 刘君 谭熠 解丽风 曾龙. Magnetic Fluctuation Measurement in Sino United Spherical Tokamak Plasma[J]. 中国物理快报, 2007, 24(7): 2014-2017 |
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| 作者姓名： | 刘飞 王文浩 何也熙 刘君 谭熠 解丽风 曾龙 |
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| 作者单位： | Sino Uaited Spherical Tokamak Laboratory, Department of Engineering Physics, Tsinghua University, Beijing 100084 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 10275041 and 10375089. |
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| 摘 要： | To investigate the magnetic fluctuations and for further transport study, the poloidal and radial magnetic field t is conducted on the Sino United Spherical Tokamak （SUNIST）. Auto-power spectral density indicares that the magnetic fiuctuation energy mainly concentrates in the frequency region lower than lO kttz. The magnetic field oscillations, which are characterized by harmonic frequencies of 40 kHz, are observed in the scrape- off layer; by contrast, in the plasma core, the magnetic fluctuations are of Gaussian type. The time-frequency profiles show that the poloidal magnetic fluctuations are temporally intermittent. The autocorrelation calculation indicates that the fluctuations in decorrelation time vary between the core and the edge.
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| 关 键 词： | 磁性测定 等离子体 球形 电子运输 |
| 收稿时间： | 2007-04-08 |
| 修稿时间： | 2007-04-08 |
Magnetic Fluctuation Measurement in Sino United Spherical Tokamak Plasma |
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| LIU Fei,WANG Wen-Hao,HE Ye-Xi,LIU Jun,TAN Yi,XIE Li-Feng,ZENG Long. Magnetic Fluctuation Measurement in Sino United Spherical Tokamak Plasma[J]. Chinese Physics Letters, 2007, 24(7): 2014-2017 |
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| Authors: | LIU Fei WANG Wen-Hao HE Ye-Xi LIU Jun TAN Yi XIE Li-Feng ZENG Long |
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| Affiliation: | Sino United Spherical Tokamak Laboratory, Department of Engineering Physics, Tsinghua University, Beijing 100084 |
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| Abstract: | To investigate the magnetic fluctuations and for further transport study, the poloidal and radial magnetic field measurement is conducted on the Sino United Spherical Tokamak (SUNIST). Auto-power spectral density indicates that the magnetic fluctuation energy mainly concentrates in the frequency region lower than 10kHz. The magnetic field oscillations, which are characterized by harmonic frequencies of 40kHz, are observed in the scrape-off layer; by contrast, in the plasma core, the magnetic fluctuations are of Gaussian type. The time-frequency profiles show that the poloidal magnetic fluctuations are temporally intermittent. The autocorrelation calculation indicates that the fluctuations in decorrelation time vary between the core and the edge. |
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| Keywords: | 52.40.Hf 52.25.Gj 52.55.Fa |
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