Abstract

Reactor plasma core fueling requires the injection of cryogenic pellets, most probably composed of a mixture of D₂ and T₂. Likely, pellet injection will be the most important actuator for plasma core density control. Therefore, pellet injection systems must be developed further that are capable of acting as actuator for density control. A novel control scheme is developed based on a centrifuge acceleration system. This scheme considers every available pellet launching slot and compares the current particle flux with the requested one. The response time is within the granularity of the available launching slots, in this case between 7 and 12 ms. First plasma experiments in feedforward mode showed excellent results, providing a good basis for upcoming plasma core density feedback control development activities.

摘要

反应堆等离子堆芯加注需要注入低温药丸，极有可能由D ₂和T ₂的混合物组成。粒料注射可能是控制等离子体核心密度最重要的促动器。因此，必须进一步开发能够用作密度控制致动器的颗粒注射系统。基于离心机加速系统，开发了一种新颖的控制方案。该方案考虑了每个可用的颗粒发射槽，并将当前的粒子通量与请求的粒子通量进行比较。响应时间在可用启动时隙的粒度内，在这种情况下为7到12 ms。前馈模式下的首次等离子体实验显示了出色的结果，为即将到来的等离子体核心密度反馈控制开发活动提供了良好的基础。