Studies of the plasma flow velocity in the edge and scrape off layer of tokamaks

托卡马克边缘和刮除层等离子体流速的研究

• 批准号: 8579-2008
• 负责人: Boucher, Claude
• 金额: $ 1.47万
• 依托单位: Institut national de la recherche scientifique
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=389789
• 关键词: Studies; plasma; flow; velocity; edge

The world effort in fusion research has initiated a major step forward in the next large scale experiment called ITER (International Thermonuclear Experimental Reactor), a burning plasma experiment dedicated to demonstrate de feasibility of thermonuclear fusion as a power source. Even if such a large scale project is underway, fundamental physics issues remain and can be addressed in existing tokamaks, the magnetic geometry of ITER. The objective of the present research program is to study the flow of the main species of the plasma in the scrape off layer (SOL) of tokamaks. It is speculated that such plasma flows may be responsible for the spread of tritium inside the reactor. Therefore, from a technical standpoint, if these flows are not better understood and controlled, activation resulting from the trapping of tritium may shorten the useful life of the fusion reactor. From a more fundamental physics standpoint, these flows are now being invoked as being part of the underlying mechanisms in the confinement regimes in tokamaks. Consequently, a better understanding of these flows leading to their control will bring about a more efficient control of the thermonuclear furnace.

国际热核实验反应堆（ITER）是一项燃烧等离子体实验，旨在证明热核聚变作为一种能源的可行性，世界在核聚变研究方面的努力已经迈出了重要的一步。即使如此大规模的项目正在进行中，基本的物理问题仍然存在，并且可以在现有的托卡马克（ITER的磁性几何结构）中解决。本研究计划的目的是研究托卡马克刮除层（SOL）中主要等离子体的流动。据推测，这种等离子体流可能是氚在反应堆内扩散的原因。因此，从技术的角度来看，如果不能更好地理解和控制这些流动，由氚捕获引起的激活可能会缩短聚变反应堆的使用寿命。从更基本的物理学角度来看，这些流动现在被称为托卡马克约束机制的潜在机制的一部分。因此，更好地了解这些流动，从而控制它们，将带来对热核炉的更有效的控制。