Development of compact torus injection technology for fueling fusion reactors

开发用于聚变反应堆燃料的紧凑环面注入技术

• 批准号: 336803-2006
• 负责人: Hirose, Akira
• 金额: $ 10.61万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2006
• 资助国家: 加拿大
• 起止时间: 2006-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=341231
• 关键词: Development; compact; torus; injection; technology

In contrast to fission reactors, fusion reactors do not have large fuel inventory. (This is one of the reasons why fusion reactors cannot runaway.) In order to maintain burning plasma, fusion fuels have to be supplied externally to the core where fuels are needed most. The existing fueling technologies (e.g., pellet injection) are already encountering difficulties in core fueling even in the existing tokamaks. The potential inadequacy of the existing fueling methods in large fusion reactors has recently been realized at an IEA Workshop on Burning Plasmas. The expert panel recommended that an alternative technology be developed and stated that research on compact torus (CT) injection should be given serious consideration. The attractiveness of CT injection as a fueling means has been recognized for some time particularly in Canada where pioneering work was done on development of CT gun and the first disruption free injection in a tokamak.  In this application, funding is requested to bolster the CT project in the Plasma Physics Laboratory, University of Saskatchewan, where STOR-M, the only active Canadian tokamak, exists. Fueling technology for fusion reactors must meet stringent restrictions including small density perturbation and capability to control the local plasma pressure gradient in the core for the purpose of bootstrap current optimization. CT injection has a potential to meet the requirements.

与裂变反应堆相比，聚变反应堆没有大量的燃料库存。(This是聚变反应堆无法失控的原因之一。）为了维持燃烧的等离子体，聚变燃料必须从外部供应到最需要燃料的核心。现有的燃料加注技术（例如，芯块注入）已经在堆芯燃料加注中遇到困难，即使在现有的托卡马克中也是如此。最近在国际能源署关于燃烧等离子体的研讨会上，人们认识到了大型聚变反应堆现有燃料加注方法的潜在不足。专家小组建议开发一种替代技术，并表示应认真考虑对紧凑型环面注入的研究。CT注入作为一种燃料的吸引力已经被认识了一段时间，特别是在加拿大，在CT枪的开发和托卡马克中的第一个无中断注入的开创性工作已经完成。在这个应用中，资金被要求支持在萨斯喀彻温大学等离子体物理实验室的CT项目，其中STOR-M是加拿大唯一活跃的托卡马克。聚变堆的燃料技术必须满足严格的限制，包括小的密度扰动和能力，以控制当地的等离子体压力梯度的核心，为目的的自举电流优化。CT注射有潜力满足要求。