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4,000원
원문정보
초록
영어
2 K superfluid helium cryogenic system is the crucial component of many large accelerators. When the cryogenic system is operating at 2K@3129Pa, many room-temperature parts are connected to superfluid helium via tubes. Air Leakage in these connections may lead to air contamination of the cryogenic system. Air contamination may cause equipment failure in cryogenic systems and, in extreme cases, render the entire accelerator system inoperable. Helium guard is a technique that guards against air contamination of these sub-atmospheric pressure connections in 2 K superfluid helium cryogenic system. This paper introduces a typical 2 K cryogenic distribution design for large accelerators, and make risk analysis of air contamination. Finally, the analysis of specific leakage points and detailed engineering design are presented, which may be used as a reference when designing of a 2 K superfluid helium cryogenic distribution system.
목차
Abstract 1. INTRODUCTION 2. HIAF ILINAC CRYOGENIC DISTRIBUTION SYSTEM 3. RISK ANALYSIS OF AIR CONTAMINATION 3.1. Relationship between helium and air leakage rate 3.2. Risk analysis 4. ENGINEERING DESIGN 5. CONCLUSIONS ACKNOWLEDGMENT REFERENCES
Xianjin Wang [ College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, People’s Republic of China, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China ]
Shuping Chen [ College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, People’s Republic of China ]
Wen Jun [ Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China ]
Dajun Fan [ Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China ]
Liming Zhu [ Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China ]
Yanan Li [ Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China ]
Xiaofei Niu [ Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China ]
Corresponding Author
Junhui Zhang [ Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China ]