Studies on Nonlocal Bursty Transport of Plasma Heat and Particles in Toroidal Divertor Configuration

环形偏滤器结构中等离子体热和粒子非局部突发传输的研究

基本信息

批准号：
14208052
负责人：
TAKAMURA Shuichi
金额：
$ 26.21万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

1. Construction of Toroidal Device NAGDIS-T for SOL and Divertor Simulation StudiesMachine parameters are as follows: Major radius RO = 34 cm, width 2a =18 cm, Height 2b = 28 cm, Toroidal and vertical fields: Bt = 0.1 T, Bv = 10 G. The plasma density of ne~1018 m-3 and the electron temperature of Te~10 eV with the pulse length of 50 ms under the deuterium gas pressure of P~1 mTorr have been obtained by the injection of RF power of 20 kW for AC Joule heating. A simple numerical model for the plasma generation is employed and found to reproduce the gas pressure dependence of plasma density. A steady spiral toroidal plasma production using DC discharge of ne・1019 m-3 and Te~5 eV has been obtained for the prospect of ELM simulation by a pulsed operation.2. Research on bursty nonlocal transport of plasma heat and particlesStatistical analysis of time-series data with the help of probability density function, wavelet transform associated by complex Morlet mother function, and fractal analysi … More s becomes a very important tool for the present project owing to the contributions of Dr. Budaev.Radial velocity distribution function of intermittent bursty fluctuations observed in NAGDIS-II has been obtained. The velocity distribution with large amplitude at a specific range of of wavelet scale was also demonstrated, and the mean velocity is found as fast as 800 m/s.In. the properties of intermittent bursty fluctuations in JT-60U SOL, the skewness of Isat peaks around dsep = 60-80 mm where the direction of the mean parallel SOL flow changes upward to downward in both L-mode and between ELMs of ELMy H-mode. The radial decay length of Isat increases there. The decay length of Isat during ELM is about three times as large as one of Isat between ELMs. The ELMs seem like blobsThe fluctuations in HYBTOK-II tokamak plasma with dynamic ergodic divertor configuration (DED) tend to propagate poloidally and predominantly in accordance with the DED rotation direction, something like chaos control. Less

1。用于溶胶和分离仿真研究的环形装置NAGDIS-T的构造如下：主要半径RO = 34 cm，宽度2a = 18 cm，高度2B = 28 cm，环形和垂直场，bt = 0.1 t，bv = 10 g。通过注入20 kW的RF功率来获得p〜1 mtorr的氘气压。采用了血浆生成的简单数值模型，并发现该模型可再现血浆密度的气压依赖性。使用NE ・1019 M-3和TE〜5 EV的直流排放的稳定螺旋环形血浆产生已获得通过脉冲操作进行ELM模拟的前景。2。 Research on bursty nonlocal transport of plasma heat and particlesStatistical analysis of time-series data with the help of probability density function, wavelet transform associated by complex Morlet mother function, and fractal analyzei … More s becomes a very important tool for the present project owing to the contributions of Dr. Budaev.Radial velocity distribution function of intermittent bursty fluctuations observed in NAGDIS-II has been obtained.还显示了具有特定小波范围范围内的大放大器的速度分布，并且发现平均速度的速度与800 m/s.in的速度一样快。 JT-60U SOL中间歇性爆发波动的性质，ISAT峰围绕DSEP = 60-80 mm的偏度，其中平均平行SOL流动流的方向在L模式和Elmy H模式之间的Elms中向下变化。 ISAT的径向衰减长度在那里增加。 ELM期间ISAT的衰减长度约为ELMS之间的ISAT的三倍。 Elms似乎是斑点的Hybtok-II Tokamak等离子体的波动，具有动态的厄运分流构型（DED）倾向于按照DED旋转方向（例如混乱控制）来繁殖性能和主要繁殖。较少的