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介绍了EAST偏滤器充气系统的改进措施,压电阀与冷屏一起安装在EAST颈管中,以缩短充气管道,将充气系统的延迟时间减少约200ms。冷屏起冷却阀门并屏蔽电磁场的作用。讨论了在准稳态条件下,延迟时间给偏滤器热流反馈控制带来的负面效应。在中性束加热条件下,通过在外靶板注入Ar/D2(1:4)混合气体研究了靶板离子饱和流和热流分布的变化及充气对主等离子体的影响,得到了靶板离子饱和流显著降低、热流减少的结果。
The improvements to the EAST divertor inflator system were introduced. The piezo valve was mounted with the cold screen in the EAST neck tube to shorten the inflator and reduce the inflation system delay time by about 200 ms. Cold screen to cool the valve and shield the role of the electromagnetic field. The negative effects of delay time on the feedback control of divertor heat flow under quasi-steady-state conditions are discussed. Under the condition of neutral beam heating, the Ar / D2 (1: 4) mixed gas was injected into the outer target plate to study the changes of ion saturation flow and heat flux in the target plate and the influence of inflating on the main plasma. The ion saturation The flow is significantly reduced and the heat flow is reduced as a result.