浸蜡对REBCO带间接触电阻的影响
Effects of Wax Impregnation on Contact Resistivity Between REBCO Tapes
摘要：
无绝缘REBCO线圈技术的进步使得了解和控制接触电阻率变得越来越重要。Praffin（蜡）浸渍是一种用于提高绝缘和非绝缘REBCO线圈机械稳定性的工艺。浸蜡对无绝缘线圈和带有附加铜稳定剂或多导体的绝缘线圈都有好处。在后一种情况下，导体和附加稳定器之间的接触电阻也很重要。了解蜡的去除对接触电阻率（Rct）的影响是至关重要的。我们设计并建立了一个装置，使用短REBCO样品，模拟在蜡浸渍过程中的煎饼线圈的Rct的行为。在77 K下测量了蜡浸渍前后的Rct。此外，缠绕单个扁平线圈以测试蜡浸渍的效果。该线圈模拟NHMFL 32 T磁体线圈A的绕组应力。在77 K和4.2 K下测量了石蜡浸渍前后的Rct。我们发现，蜡浸渍不显着改变接触电阻率。这意味着蜡浸渍可以用于线圈中，而不会损害匝之间的电流共享能力。讨论了实验过程和结果。
英文摘要：
Advances on no-insulation REBCO coil technology has made understanding and controlling contact resistivity increasingly im-portant. Praffin (wax) impregnation is a process that has been used for improving mechanical stability of insulated and no-insulation REBCO coils. Wax impregnation is beneficial in both no-insulation coils and insulated coils with additional copper sta-bilizer or multiple conductors. In the latter scenario, contact re-sistance between conductor and additional stabilizer is also im-portant. It is crucial to understand the effects of wax impregna-tion on contact resistivity (Rct). We designed and built an appa-ratus to use short REBCO samples which simulates the behavior of Rct in a pancake coil during the wax impregnation process. Rct was measured at 77 K before and after the wax impregnation. In addition, a single pancake coil was wound to test the effect of wax impregnation. This coil simulates the NHMFL 32 T magnet Coil A in winding stresses. Rct was measured at 77 K and 4.2 K before and after wax impregnation. We found that wax impregnation does not significantly change contact resistivity. This means that wax impregnation can be used in coils without compromising the current sharing ability between turns. The experimental process and results are discussed.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
