论文标题
用于加速器磁铁开发的测试样品和基础架构
Test samples and infrastructure for accelerator magnet developments
论文作者
论文摘要
由于磁铁中的训练功能，LHC仍然无法在全能量下运行。较高的现场实用超导体（NB3SN）表现出比NBTI差得多的训练行为。大多数磁铁性能问题都与淬火有关，正是这种现象及其依赖性需要理解，我们才能成功用磁铁解决它们。出于务实和科学原因，基本机制很难在实际磁铁中进行研究。可用的数据表明，在淬火位置模拟当地条件可能足以对观察到的行为有很好的了解。 “局部”条件表明，在具有可控条件（包括外部磁场和力场）的设施中供电的电缆/堆栈的小样本仿真。本文讨论了这种方法的必要性，同时提醒了当前的淬火研究和方向，并指出了可用技术的不足。需要改进的设施和观点的改变才能保持一致且负担得起的发展。
LHC still does not operate at full energy due to training features in magnets. Higher field practical superconductors (Nb3Sn) show much worse training behavior than NbTi. Most magnet performance issues relate to quenching, and it is this phenomenon and its dependencies that need to be understood for us to succeed addressing them in magnets. For pragmatic and scientific reasons underlying mechanisms are hard to investigate in real magnets. Available data suggest that emulating local conditions at quench location may be enough to arrive at a good understanding of what drives observed behavior. "Local" conditions imply emulation by small samples of cables/"stacks" powered within a facility with controllable conditions, including external magnetic and force fields. This paper argues about the necessity of this approach, while reminding current understanding and directions of quench studies, and pointing out inadequacy of available techniques. Improved facilities and change of perspective are required for consistent and affordable development.
