超导磁力仪“低压灌加液氦”的方法

An Approach of Transferring Liquid Helium to the Superconducting Quantum Interference Device under Low Pressure

超导磁力仪是通过液氦的降温作用来维持其超导状态的,因此,随着液氦的消耗,向超导磁力仪灌加液氦是一项重要的仪器维护工作。在认真研究既有的传统方法和相关液氦传输资料的基础上,结合工作实践,提出了超导磁力仪"低压灌加液氦"的方法。该方法在兰州大学西部环境教育部重点实验室的760R超导磁力仪上成功应用3次,取得了良好的效果。该方法可靠,高效,安全,可应用于类似产品的液氦灌加中。

The superconducting state of SQUID is maintained by the cooling effect of liquid helium,thus as the liquid helium is consuming,an important instrument maintenance task is to transfer the liquid helium to the SQUID.Based on the practice work,an approach of ＂transferring liquid helium to SQUID under low pressure＂ was proposed.The approach was applied to the 760R SQUID of the key laboratory of western China＇s environmental systems of the ministry of education,and good results were achieved.The approach is reliable,efficient and safe.