制冷机冷却型超导磁体杜瓦的研制

CRYOGENICS AND SUPERCONDUCTIVITY(2004)

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Abstract
介绍了带制冷机冷却的超导磁体系统杜瓦的设计、制作及实验结果分析.杜瓦采用40K、10K双制冷屏结构,其室温磁场孔径为φ75mm,长415mm.试验结果为:液氦蒸发率为0.69升/天(在20天连续试验期内),优于合同规定的指标(2.4升/天).双制冷屏由一台双级G-M制冷机冷却,工作时一级冷屏温度为35K,二级冷屏温度为7.0K.磁体系统的磁场强度为3T,满足了用户的使用要求.
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