Improvement of Plasma Confinement in Helical Systems

螺旋系统中等离子体约束的改进

• 批准号: 04044185
• 负责人: FUJIWARA Masami
• 金额: --
• 依托单位: National Institute for Fusion Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Overseas Scientific Survey.
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04044185/
• 关键词: Nuclear Fusion; Plasma Confinement; Helical Device; Helical Devce; Stellarator; Heliotron

Helical fusion systems have major advantage over Tokamak-type devices because of no plasma current disruptions and reliable steady-state operations. Therefore, it is important to improve the plasma confinement of helical systems for developing better fusion reactors.At present, in Japan, LHD(Large Helical Device) is under construction, and CHS(Compact Helical System) is in operation. On the other hand, in Germany, the W7-X(Wendelstein 7-X) project is proposed and the W7-AS experiments are being carried out. It is very useful to discussed with each other for both projects.In this fiscal year, six Japanese scientists visited to Max-Planck Institute for Plasma Physics in Germany to discuss the following items :(1) Comparisons between LHD Projects and the W7X Plan. The concepts of plasma confinements in both projects are compared and checked. Especially, the helical divertor of LHD and the island divertor of W7AS should be discussed in details in the near future.(2) Comparisons between CHS and W7AS experiments. Experimental data from two devices are discussed, and the confinement models are checked.Moreover, one scientist visited Germany and Spain for getting informations on the Germany steralleters and the spanish TJ-II heliac project, as well as to discuss on the future research collaborations plan.In the next fiscal year, these collaboration researches should be accelerated as a Grant under The Monbusho International Scientific Research Program.

由于没有等离子体电流干扰和可靠的稳态操作，螺旋融合系统比Tokamak型设备具有重要优势。因此，重要的是要改善螺旋系统的血浆限制，以开发更好的融合反应器。目前，在日本，LHD（大型螺旋装置）正在建设中，并且CHS（紧凑型螺旋系统）正在运行。另一方面，在德国，提出了W7-X（Wendelstein 7-X）项目，并进行了W7-AS实验。在两个项目中相互讨论非常有用。在本财政年度，六名日本科学家访问了德国马克斯 - 普朗克血浆物理学研究所，讨论以下项目：（1）LHD项目与W7X计划之间的比较。比较和检查了两个项目中血浆约束的概念。尤其是，应在不久的将来详细讨论LHD的螺旋分离和W7A的岛屿分流。（2）CHS和W7AS实验之间的比较。讨论了来自两种设备的实验数据，并检查了限制模型。此外，一位科学家访问了德国和西班牙，以获取有关德国的英镑和西班牙TJ-II Heliac项目的信息，并讨论了未来的研究合作计划。在下一个财政年度中，这些合作研究应加快授予的国际科学研究。