微堆层绝缘子的研制与初步实验研究

 为发展新型介质壁加速器技术，研制了微堆层绝缘子并开展了初步的实验研究。利用有限元及粒子模拟方法，理论计算了微堆层绝缘子的沿面电场分布及电子运动轨迹，提出微堆层绝缘子的优化设计方案;采用高温层压的方法，研制出以聚全氟乙丙烯薄膜为介质层、不锈钢膜为金属层的微堆层绝缘子试样，并初步开展了纳秒脉冲下微堆层绝缘子的真空沿面闪络实验。研究结果表明：微堆层绝缘子具有良好的真空沿面闪络性能，其闪络场强可达180 kV/cm。

Development and preliminary experimental study on micro-stacked insulator

High gradient insulating technology is one of the key technologies in new type dielectric wall accelerator(DWA). High gradient insulator, namely micro-stacked insulator, was developed and preliminary experimental study was done. Based on the finite element and particle simulating method, surface electric field distribution and electron movement track of micro-stacked insulator were numerated, and then the optimized design proposal was put forward. Using high temperature laminated method, we developed micro-stacked insulator sampies which uses exhaustive fluorinated ethylene propylene(FEP) as dielectric layer and stainless steel as metal layer. Preliminary experiment of vacuum surface flashover in nanosecond pulse voltage was done and micro-stacked insulator exhibited favorable vacuum surfa