Abstract The helium inlet is one of the most important components of the ITER Poloidal Field (PF) coils. The insulation structure of the helium inlet is critical to provide sufficient electrical and mechanical properties for a practical application. In this paper, an ITER PF6 coil double pancake helium inlet trial mock-up was designed and manufactured by simulating the actual manufacturing process. A thermal cycling test on the sample was carried out from 280 K to77 K, also before and after the thermal cycling, a turn-to-turn DC HV test and Paschen test were performed. The test results satisfied the ITER requirements. It has therefore been verified that the PF6 coil double pancake helium inlet insulation has good electrical properties, and can be applied to the formal production of the PF6 coil double pancakes.

中文翻译：

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ITER PF6线圈双薄饼氦气入口电性能表征

摘要 氦气入口是 ITER 极向场 (PF) 线圈最重要的组成部分之一。氦气入口的绝缘结构对于为实际应用提供足够的电气和机械性能至关重要。在本文中，通过模拟实际制造过程，设计并制造了 ITER PF6 线圈双盘式氦气入口试验模型。对样品进行了280 K~77 K的热循环试验，在热循环前后也进行了匝间直流高压试验和帕申试验。测试结果满足 ITER 要求。因此验证了PF6线圈双薄饼进氦绝缘具有良好的电气性能，可应用于PF6线圈双薄饼的正式生产。