Development of compact torus injection technology for fueling fusion reactors

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注入作为一种加燃料手段的吸引力已经被认识了一段时间，特别是在加拿大，在那里进行了CT枪的开发和托卡马克中的第一次无中断注入的开创性工作。 在本申请中，请求提供资金以支持萨斯喀彻温大学等离子体物理实验室的CT项目，该实验室拥有唯一活跃的加拿大托克马克装置STOR-M。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。

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.