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| 1 | 2 K superfluid helium cryogenic vertical test system for superconducting cavity of ADS Injector I显示文摘Purpose The accelerator-driven subcritical system(ADS)is the internationally recognized key technology of nuclear waste problem treatment,of which superconducting proton linac is an important part.With the support of the strategic science and technology pilot project of the Chinese Academy of Sciences,the Institute of High Energy Physics of the Chinese Academy of Sciences took the lead in the research of 325 MHz superconducting proton linac,which is called ADS Injector I.The superconducting accelerator part of ADS Injector I mainly consists of 14 spoke-type superconducting cavities withβ0.12.At the same time,the research work of various cavities with differentβvalues and different frequencies is also carried out to lay the technical and technological foundation for ADS main accelerator.The only way to determine whether the superconducting cavity can reach the design target and whether it can be installed into the cryostat is the vertical test at cryogenic.As the only way to test the microwave performance of the superconducting cavity at low temperature,the vertical test can accurately test the acceleration gradient Eacc and the corresponding quality factor Q0 of the superconducting cavity.The design and construction of the superconducting cavity vertical test facility is based on the practical needs of the pilot project and the long-term development of the superconducting accelerator.Methods This paper mainly introduces the design and construction of the cryogenic vertical test system for the superconducting cavity of ADS Injector I,including the system scheme design,process design,heat load analysis,2 K superfluid helium obtaining method,system commissioning and operation,etc.Results and Conclusion The static heat leakage at 2 K of the 2 K superfluid helium vertical test system of ADS Injector I is 1.624W,which has reached the international advanced level.The 2 K superfluid helium vertical test system of ADS Injector I after constructed not only meets the test requirements of ADS pilot project,but also conducts 4 K and 2 K vertical tests for other different types of superconducting cavities and relevant cryogenic experiments. | Rui Ge Liangrui Sun Miaofu Xu Rui Ye Xiangzhen Zhang Minjing Sang Ruixiong Han Zhuo Zhang Jiehao Zhang Lin Bian Mei Li Changcheng Ma Tongxian Zhao Yongcheng Jiang Zhengze Chang Shaopeng Li | 2020 | Radiation Detection Technology and Methods2020，4，2： | 2 |
| 2 | ADS注入器Ⅱ低温垂测液氦杜瓦漏热分析显示文摘准确计算分析低温杜瓦的漏热量是评价低温杜瓦性能的重要依据。以一台自制的超导腔低温垂直测试液氦杜瓦作为研究对象,对其进行详细介绍,并进行了详尽的漏热计算。将计算结果与实测数据进行了对比分析,得到了该类型测试杜瓦产生漏热的原因,并给出了优化建议。 | 苏海林 郭晓虹 金弢 金树峰 | 2018 | 低温与超导2018，46，11： | 1 |
| 3 | 深圳产业光源低温系统的概念设计显示文摘为促进同步辐射光源技术在粤港澳大湾区的发展,深圳市以“产业光源”为定位目标,计划建设一台高性能的中能同步辐射光源。为满足深圳产业光源未来3台超导腔的测试与在线运行需求,需建设一套制冷量达到2000 W@4.5 K的液氦低温系统。首先简要介绍了低温系统的热负荷估算和系统布局,然后介绍了低温系统的技术指标、2 K获得方案、系统原理及工作流程,最后着重阐述了关键设备垂直测试杜瓦和水平测试恒温器的设计方案。 | 何崇超 丁培 刘轶伦 卢亮 | 2023 | 低温工程2023，，4： | 0 |
| 4 | 大型超流氦制冷机1.8 K冷箱结构设计与分析显示文摘针对'聚变堆主机关键系统综合研究设施项目',拟建250 W@1.8 K超流氦制冷机,为中小型高场强超导磁体测试提供1.8 K的低温环境。作为1.8 K超流氦制冷机核心部件之一,1.8 K冷箱主要为低温换热器、液氦槽和冷压机等低温部件提供一个真空绝热的工作环境。首先根据制冷机流程,对1.8 K冷箱进行结构设计,然后采用ANSYS Workbench软件对1.8 K冷箱壳体进行正常工况和意外工况下应力及变形模拟,结果表明冷箱设计满足最大应力要求范围。最后根据抗震设计规范得到地震响应谱,通过模态分析和地震谱分析得到各载荷下冷箱壳体的地震响应,表明其在地震载荷作用下的安全性。 | 张传佳 张启勇 朱志刚 姚达毛 杨鹏程 汪涵 | 2020 | 低温与超导2020，48，10： | 0 |
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