PDF(Pubmed)
Abstract：
The superconducting magnets of future particle accelerators will be exposed to high irradiation doses at cryogenic temperatures. To investigate the effect of irradiation temperature and atmosphere on the aging behavior, we have characterized the changes in thermomechanical properties of six epoxy resins for potential use in superconducting magnets after irradiation up to 20 MGy in ambient air, inert gas, and liquid helium. Based on the results obtained by Dynamic Mechanical Analysis (DMA), we discuss the effect of irradiation temperature and the presence of oxygen. The irradiation temperature can have a strong influence on the rates at which cross-linking and chain scission occur.
摘要：
未来粒子加速器的超导磁体将在低温下暴露于高辐照剂量。为了研究辐照温度和气氛对老化行为的影响，我们已经表征了六种环氧树脂的热机械性能的变化，这些环氧树脂在环境空气中辐照高达20MGy后，可能用于超导磁体。惰性气体,和液氦.根据动态力学分析(DMA)的结果，我们讨论了辐照温度和氧气存在的影响。辐照温度对交联和断链发生的速率有很大影响。
