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<p>The Dalian Advanced Light Source (DALS) is a free-electron laser (FEL) facility. DALS SRF Module Test Facility (SMTF) was funded by the Dalian local government and has now been completed. Cryogenic systems play a critical role in modern light sources. For SMTF, a 370&#xa0;W@2 K cryogenic system was specifically designed to support the testing of superconducting cavities, cryomodules, and other key components. The system provides cooling for four independent test benches: a Horizontal Test Bench (HTB) for cryomodule testing, a Vertical Test Bench (VTB) for cavity testing, a Cryogenic Test Bench (CTB) for general cryogenic equipment testing, and an Injector Test Bench (ITB) for beam testing. After approximately six years of detailed design, construction, installation, and commissioning, the cryogenic system has been successfully brought into operation and is currently operating stably. It now offers a reliable and consistent cryogenic environment that supports the performance validation of critical superconducting components, laying a solid technical foundation for the DALS project. This paper presents the detailed design, key components, commissioning results, and operational experience of the cryogenic system for the DALS SMTF.</p>

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Cryogenics in the Dalian Advanced Light Source SRF Module Test Facility

  • 期刊论文

  • 发表日期：

    2026年5月25日

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  • Zheng Sun,
  • Xu Shi,
  • Lei Xu,
  • Xinbo Dong,
  • Yaqiong Wang,
  • Haining Li,
  • Jichao Dong,
  • Guanglong Cui,
  • Lei Yang,
  • Huikun Su,
  • Sheng He,
  • Xiaohe Lu,
  • Yilun Liu,
  • Xilong Wang

摘要

The Dalian Advanced Light Source (DALS) is a free-electron laser (FEL) facility. DALS SRF Module Test Facility (SMTF) was funded by the Dalian local government and has now been completed. Cryogenic systems play a critical role in modern light sources. For SMTF, a 370 W@2 K cryogenic system was specifically designed to support the testing of superconducting cavities, cryomodules, and other key components. The system provides cooling for four independent test benches: a Horizontal Test Bench (HTB) for cryomodule testing, a Vertical Test Bench (VTB) for cavity testing, a Cryogenic Test Bench (CTB) for general cryogenic equipment testing, and an Injector Test Bench (ITB) for beam testing. After approximately six years of detailed design, construction, installation, and commissioning, the cryogenic system has been successfully brought into operation and is currently operating stably. It now offers a reliable and consistent cryogenic environment that supports the performance validation of critical superconducting components, laying a solid technical foundation for the DALS project. This paper presents the detailed design, key components, commissioning results, and operational experience of the cryogenic system for the DALS SMTF.