EAST alternative magnetic configurations: modelling and first experiments
EAST alternative magnetic configurations: modelling and first experiments
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DOI：
10.1088/0029-5515/55/8/083005
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发表时间：
2015-06
期刊：
影响因子：
3.3
通讯作者：
G. Calabrò;B. Xiao;B. Xiao;S. L. Chen;Y. Duan;Yong Guo;J. Li;L. Liu;Zheng-ping Luo;L. Wang;Jichan Xu;B. Zhang;R. Albanese;R. Ambrosino;F. Crisanti;V. Ridolfini;F. Villone;B. Viola;L. Barbato;M. Magistris;G. Tommasi;E. Giovannozzi;S. Mastrostefano;S. Minucci;A. Pironti;G. Ramogida;A. Tuccillo;R. Zagórski
中科院分区：
文献类型：
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作者：
G. Calabrò;B. Xiao;B. Xiao;S. L. Chen;Y. Duan;Yong Guo;J. Li;L. Liu;Zheng-ping Luo;L. Wang;Jichan Xu;B. Zhang;R. Albanese;R. Ambrosino;F. Crisanti;V. Ridolfini;F. Villone;B. Viola;L. Barbato;M. Magistris;G. Tommasi;E. Giovannozzi;S. Mastrostefano;S. Minucci;A. Pironti;G. Ramogida;A. Tuccillo;R. Zagórski
面向等离子体的部件上的热量和粒子负载是反应器设计要解决的最具挑战性的问题之一。替代的磁配置可以使托卡马克操作具有比标准的单零（SN）偏滤器更低的峰值热负荷。本文报告的创建和控制这样的替代方案之一：一个两个零附近偏滤器配置。这项研究的一个重要组成部分是，这两个零偏滤器是在一个大型超导托卡马克作为实验先进的超导托卡马克。2014年进行了一项初步实验，第二个空区形成了一个配置，两个空区之间有很大的距离，目标板附近有一个收缩的几何形状。这些配置已使用FIXFREE代码设计，并使用CREATE-NL工具进行了优化，并在本文中进行了讨论。预测边缘模拟使用TECXY代码也提出了先进的偏滤器和SN配置的比较。最后，欧姆和低约束（L模式）的两个零偏滤器和SN放电和解释性的二维边缘模拟的实验结果进行了讨论。未来的实验将致力于改变高约束（H-模式）放电的两个零之间的距离。
Heat and particle loads on the plasma facing components are among the most challenging issues to be solved for a reactor design. Alternative magnetic configurations may enable tokamak operation with a lower peak heat load than a standard single null (SN) divertor. This papers reports on the creation and control of one of such alternatives: a two-null nearby divertor configuration. An important element of this study is that this two-null divertor was produced on a large superconducting tokamak as an experimental advanced superconducting tokamak. A preliminary experiment with the second null forming a configuration with significant distance between the two nulls and a contracting geometry near the target plates was performed in 2014. These configurations have been designed using the FIXFREE code and optimized with CREATE-NL tools and are discussed in the paper. Predictive edge simulations using the TECXY code are also presented by comparing the advanced divertor and SN configuration. Finally, the experimental results of ohmic and low confinement (L-mode) two-null divertor and SN discharges and interpretative two-dimensional edge simulations are discussed. Future experiments will be devoted to varying the distance between the two nulls in high confinement (H-mode) discharges.