3D structure of density fluctuations in the T-10 tokamak and new approach for current profile estimation

Vershkov V. A.; Buldakov M. A.; Subbotin G. F.; Shelukhin D. A.; Melnikov A. V; Eliseev L. G.; Kharchev N. K.; Khabanov P. O.; Drabinskiy M. A.; Sergeev D. S.; Myalton T. B.; Trukhin V. M.; Gorshkov A. V; Belbas I. S.; Asadulin G. M.

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3D structure of density fluctuations in the T-10 tokamak and new approach for current profile estimation

机译：T-10 Tokamak中的密度波动结构与当前轮廓估计的新方法

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The paper is focused on the new systematic measurements of the 3D spatial distributions of the amplitudes, the radial correlation lengths and the long-range correlations along the magnetic field lines for the different turbulence types. The density fluctuations were measured by the heterodyne correlation reflectometry (CR) using the plasma probing with ordinary mode. CR data was supported by recent experiments with the measurements of the perturbation properties using an heavy ion beam probe (HIBP). The new reflectometer antenna array in T-10 tokamak consists of sets of horns distributed at four places toroidally and poloidally over the torus. The experiments confirmed previously found strong poloidal asymmetry of the amplitude for the broadband (BB) and quasi-coherent (QC) fluctuations. It was found that amplitude of density fluctuations is uniform poloidally for the stochastic low frequency (SLF) fluctuations. The radial correlation were measured at four poloidal angles to reveal the poloidal dependence of the radial correlation length for the different fluctuation types. The significant decrease of the radial correlation lengths towards the high magnetic field side was observed for the QC and the SLF fluctuations. The long-range correlations along the field lines were measured by the reflectometers in two cross-sections separated by 1/4 of the torus. The reflectometers had the same probing frequency thus provide reflection from the same magnetic surface. The measurements were carried out at the low and the high field sides with two currents and two magnetic configurations with simultaneous reversal of the toroidal field and plasma current. The positions of the resonance radius were calculated also using 3D tracing of the magnetic field line and demonstrated good agreement with experiment ones. These results allow to propose the new approach for the current profile measurements in tokamaks.

机译：本文专注于振幅的3D空间分布的新系统测量，沿磁场线的径向相关长度和用于不同湍流类型的磁场线的远程相关性。使用普通模式的等离子体探测，通过外差相相关反射仪（CR）测量密度波动。最近通过使用重离子束探针（HIBP）测量扰动性能的测量来支持CR数据。 T-10 Tokamak中的新反射器天线阵列由一组喇叭组成，在四个地点以环形和在圆环上编码分布。实验证实了先前发现宽带（BB）和准相干（QC）波动的幅度的强度不对称的强度不对称。发现，对于随机低频（SLF）波动，密度波动的幅度是均匀的编码。以四个个子角度测量径向相关性，以揭示不同波动类型的径向相关长度的针状依赖性。观察到QC和SLF波动观察到朝向高磁场侧的径向相关长度的显着降低。沿着场线的远程相关性由反射器中的两个横截面中的反射仪测量，由圆环的1/4分开。反射器具有相同的探测频率，从而提供来自相同磁盘的反射。测量在低场和高场侧进行，具有两个电流和两个磁性配置，具有同时逆转环形场和等离子体电流。还使用磁场线的3D追踪计算谐振半径的位置，并与实验结果表现出良好的一致性。这些结果允许提出对Tokamaks的当前轮廓测量的新方法。

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来源
《Nuclear fusion》 |2019年第6期|066021.1-066021.14|共14页
作者
Vershkov V. A.; Buldakov M. A.; Subbotin G. F.; Shelukhin D. A.; Melnikov A. V; Eliseev L. G.; Kharchev N. K.; Khabanov P. O.; Drabinskiy M. A.; Sergeev D. S.; Myalton T. B.; Trukhin V. M.; Gorshkov A. V; Belbas I. S.; Asadulin G. M.;
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作者单位

Kurchatov Inst Natl Res Ctr Moscow 123182 Russia;

Kurchatov Inst Natl Res Ctr Moscow 123182 Russia;

Kurchatov Inst Natl Res Ctr Moscow 123182 Russia;

Kurchatov Inst Natl Res Ctr Moscow 123182 Russia;

Kurchatov Inst Natl Res Ctr Moscow 123182 Russia|Natl Res Nucl Univ MEPhI Moscow 115409 Russia|Moscow Inst Phys & Technol Dolgoprudnyi 141700 Russia;

Kurchatov Inst Natl Res Ctr Moscow 123182 Russia;

Kurchatov Inst Natl Res Ctr Moscow 123182 Russia;

Kurchatov Inst Natl Res Ctr Moscow 123182 Russia|Moscow Inst Phys & Technol Dolgoprudnyi 141700 Russia;

Kurchatov Inst Natl Res Ctr Moscow 123182 Russia|Moscow Inst Phys & Technol Dolgoprudnyi 141700 Russia;

Kurchatov Inst Natl Res Ctr Moscow 123182 Russia;

Kurchatov Inst Natl Res Ctr Moscow 123182 Russia;

Kurchatov Inst Natl Res Ctr Moscow 123182 Russia;

Kurchatov Inst Natl Res Ctr Moscow 123182 Russia;

Kurchatov Inst Natl Res Ctr Moscow 123182 Russia;

Kurchatov Inst Natl Res Ctr Moscow 123182 Russia;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类
关键词
tokamak; reflectometry; turbulence;

机译：Tokamak;反射测量仪;湍流;

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专利

1. 3D structure of density fluctuations in the T-10 tokamak and new approach for current profile estimation [J] . Vershkov V. A., Buldakov M. A., Subbotin G. F., Nuclear fusion . 2019,第6期

机译：T-10托卡马克密度波动的3D结构和电流剖面估算的新方法
2. Helical variation of density profiles and fluctuations in the tokamak pedestal with applied 3D fields and implications for confinement [J] . Wilcox R. S., Rhodes T. L., Shafer M. W., Physics of plasmas . 2018,第5aPta1期

机译：托卡马克基座密度剖面的螺旋变化与应用三维领域的托卡马克基座的波动及其对监禁的影响
3. Boundary integral equation approach based on a polynomial expansion of the current distribution to reconstruct the current density profile in tokamak plasmas [J] . Itagaki M, Yamaguchi S, Fukunaga T Nuclear fusion . 2005,第3期

机译：基于电流分布的多项式展开的边界积分方程法可重构托卡马克等离子体中的电流密度分布
4. Experimental study of spatial distributions of density fluctuations in T-10 tokamak and comparison between experimental results and numerical modeling [C] . M.A. Buldakov, V.A. Vershkov, D.A. Shelukhin, EPS Conference on Plasma Physics . 2016

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5. Development of Far-Infrared Polari-Interferometer for the Evaluation of Current Density Profiles and Confinement Properties on the JT-60 Tokamak [D] . 福田, 武司 1989

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6. A Geometric Approach to Joint 2D Region-Based Segmentation and 3D Pose Estimation Using a 3D Shape Prior [O] . Samuel Dambreville, Romeil Sandhu, Anthony Yezzi, -1

机译：基于2D区域的分割和3D姿态估计使用3D形状的几何方法
7. ESTIMATION OF POSSIBILITY OF THE REALIZATION OF DISCHARGES WITH HIGH FRACTION OF NON-INDUCTIVE CURRENT IN T-10 TOKAMAK [O] . N.A. Kirneva, A.A. Borschegovskij, A.Ya. Kislov, 2012

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8. Simultaneous Measurement of Current and Plasma Density Profiles in the TEXT Tokamak [R] . Thomas, D. M., West, W. P., Zheng, S. B. 1985

机译：同时测量TEXT托卡马克中的电流和等离子体密度分布

3D structure of density fluctuations in the T-10 tokamak and new approach for current profile estimation

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