Study on the peripheral structure and dynamics of burning plasmas based on both plasma processes and atomic processes

基于等离子体过程和原子过程的燃烧等离子体外围结构和动力学研究

• 批准号: 15560722
• 负责人: KAMADA Yutaka
• 金额: $ 1.41万
• 依托单位: Japan Atomic Energy Research Institute
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560722/
• 关键词: Edge Pedestal Structure; Edge Localized Mode; Neutral particle; Plasma Rotation; Poloidal Beta; H-mode; Tokamak; Nuclear Fusion; 周辺プラズマ構造; 原子分子過程とプラズマ過程; 密度分布; ヘリカル; タンデムミラー; 国際データベース

The purpose of this study is to clarify the structure and dynamics of the 'Edge Pedestal' self-generated at the peripheral region of the tokamak plasmas by the approach of the combined process of plasma processes and atomic processes.Based on the experimental results in JT-60 (Japan Atomic Energy Research Institute), we constructed a wide range of database on the pedestal structure of okamak H-mode plasmas. In addition, we conducted the international comparison experiments between JT-60 and JET(EU). As the results of these studies, 1) we have clarified that the pedestal energy decreases with increasing particle recycling (〜neutral particle density; highly localized around the divertor region) at the same electron density, and 2) found that the toroidal plasma rotation at the edge changes the eigen function and dynamics of the Edge Localized Modes (ELM) and thus the edge pressure gradient determined by ELMs. From these findings, we have clarified that it is essential to include the dist … More ribution of the neutral particles and the plasma rotation in the correlation structure of the physics parameters determining the complex system of the edge pedestal. Furthermore, we have revealed 3) that the pedestal kinetic energy and the edge pressure gradient have a linear positive correlation with the core poloidal beta, and 4) that the inter-ELM transport decreases with the normalized collisionarity. By integrating the above achievements, we have proposed a model of the parameter linkage determining the edge pedestal structure. We also reported these results at the meetings of the International Tokamak Physics Activity(ITPA) Edge and Pedestal Topical Group and provided the data to the international pedestal data base. This Topical Group agreed to proceed this research as one of the high priority research areas in the international collaborative framework. At the same time, in the domestic research activity, it became the central research area in the Fusion Forum Physics Cluster. In particular, since the effects of the neutral particle on the pedestal structure includes the common physics independent of the confinement configuration, the Physics Cluster agreed to construct the database including both tokamak and helical systems. Less

The purpose of this study is to clarify the structure and dynamics of the 'Edge Pedestal' self-generated at the peripheral region of the tokamak plasmas by the approach of the combined process of plasma processes and atomic processes.Based on the experimental results in JT-60 (Japan Atomic Energy Research Institute), we constructed a wide range of database on the pedestal structure of okamak H-mode plasmas.此外，我们在JT-60和JET（EU）之间进行了国际比较实验。作为这些研究的结果，1）我们已经澄清，基座能随着粒子回收的增加（〜中性粒子密度；高度位于转移区域周围）的降低，并且2）发现，在边缘的圆环等离子体旋转在边缘的边缘旋转改变了边缘局部模式的特征和动力学（Elm），从而决定了EDER（Elm）的egnizidions和动力学。从这些发现中，我们澄清说，必须包括区域……中性颗粒的更多规则和等离子体旋转在物理参数的相关结构中确定边缘基座的复杂系统。此外，我们已经透露3）基座动能和边缘压力梯度与核心多型β的线性正相关，以及4）ELM间的运输随着归一化的碰撞性而降低。通过整合上述成就，我们提出了一个确定边缘基座结构的参数链接的模型。我们还在国际Tokamak物理活动（ITPA）边缘和基座局部组的会议上报告了这些结果，并将数据提供给国际基座数据库。这个主题小组同意作为国际协作框架中的高优先研究领域之一继续进行这项研究。同时，在国内研究活动中，它成为融合论坛物理集群的中央研究领域。特别是，由于中性粒子对基座结构的影响包括独立于限制构型的常见物理，因此物理簇同意构建数据库，包括Tokamak和Helical Systems。较少的

项目成果

Energy loss for grassy ELMs and effects of plasma rotation on the ELM characteristics in JT-60U

• DOI: 10.1088/0029-5515/45/8/014
• 发表时间: 2005-07
• 期刊: Nuclear Fusion
• 影响因子: 3.3
• 作者: N. Oyama;Y. Sakamoto;A. Isayama;M. Takechi;P. Gohil;L. Lao;P. Snyder;T. Fujita;S. Ide;Y. Kamada;Y. Miura;T. Oikawa;T. Suzuki;H. Takenaga;K. Toi

Dimensionless Identity Experiments in JT-60U and JET

JT-60U 和 JET 中的无量纲同一性实验

• 发表时间: 2004
• 期刊: Proc.20th IAEA Fusion Energy Conference IAEA-CN-116
• 作者: G Saibene;N Oyama;Y Andrew;JG Cordey;E de la Luna;C Giroud;K Guenther;T Hatae;GTA Huysmans;Y Kamada;MAH Kempenaars;A Loarte;J Lonnroth;D McDonald;A Meiggs;MFF Nave;V Parail;R Sartori;S Sharapov;J Stober;T Suzuki;M Takechi;K Toi;H Ur
• 通讯作者: H Ur

Fast dynamics of type I ELMs and transport of the ELM pulse in JT-60U

• DOI: 10.1088/0029-5515/44/5/002
• 发表时间: 2004-05
• 期刊: Nuclear Fusion
• 影响因子: 3.3
• 作者: N. Oyama;N. Asakura;A. Chankin;T. Oikawa;M. Sugihara;H. Takenaga;K. Itami;Y. Miura;Y. Kamada-Y.-Kamad

Pedestal Characteristics of H-mode Plasmas in JT-60U and ASDEX Upgrade

JT-60U 和 ASDEX 升级中 H 模式等离子体的基座特性

• 发表时间: 2005
• 期刊: Journal of Plasma and Fusion Research 81
• 作者: H.Urano;Y.Kamada;T.Takizuka;W.Suttrop;L.D.Horton;P.Lang;H.Kubo;N.Oyama;H.Takenaga;N.Asakura
• 通讯作者: N.Asakura

Density fluctuation at edge and internal transport barriers in JT-60U

JT-60U 边缘和内部传输屏障处的密度波动

• 发表时间: 2004
• 期刊: Plasma Physics and Controlled Fusion 46
• 作者: N.Oyama;L.G.Bruskin;H.Takenaga;K.Shinohara;A.Isayama;S.Ide;Y.Sakamoto;T.Suzuki;T.Fujita;Y.Kamada;Y.Miura
• 通讯作者: Y.Miura