CAEP FEL-THz 2K氦低温系统建设及其试运行

Construction and commissioning of 2K He cryogenic system for CAEP FEL-THz

中国工程物理研究院高平均功率太赫兹大型科研装置(CAEP FEL-THz)采用1.3GHz超导加速器,低温系统为超导加速器提供2K低温环境。低温系统于2016年上半年顺利完成试运行,具备160L/h@4.5K的液氦生产能力和优于66W@2K的冷量能力,保障了超导加速器正常稳定运行所必需的低温环境。据此,简要总结了2K氦低温系统的建设进展,并介绍了低温系统的试运行情况。

The cryogenic system can provide 2K temperature for the 1.3GHz superconducting accelerator in the large scale high average Terahertz scientific installation of CAEP （ CAEP FEL - THz）. It has been successfully commissioned in first half year of 2016, with a liquid He production capacity of 160 L/h under 4.5K and a refrigeration capacity of better than 66W under 2K, which supports cryogenic environment necessary for the superconducting accelerator running. Therefore, the construction of 2K cryogenic system was summarized briefly and its commissioning was also introduced in this paper.