稀释冰箱
经济短缺
制冷
核工程
冷藏车
低温学
稀释
材料科学
热的
氦
量子
热力学
工程物理
机械工程
物理
原子物理学
量子力学
工程类
政府(语言学)
哲学
语言学
作者
Zhongqing Ji,Jie Fan,J. T. Dong,Yongbo Bian,Zhi Gang Cheng
出处
期刊:Chinese Physics B
[IOP Publishing]
日期:2022-11-01
卷期号:31 (12): 120703-120703
被引量:2
标识
DOI:10.1088/1674-1056/ac9042
摘要
With thermal fluctuation strongly suppressed, low temperature environment is essential for studies of condensed matter physics and developments of quantum technologies. Ultra-low temperature below 20 mK has demonstrated its importance and significance in physical sciences and information techniques. Dilution refrigeration is by far the best feasible and reliable method to generate and keep lattice temperature in this range. With a potential shortage of helium supply, cryogen-free dilution refrigerator (CFDR), eliminating the necessity of regular helium refill, becomes the main facility for the purpose of creating ultralow temperature environments. Here we describe our successful construction of a CFDR which reached a base temperature of around 10.9 mK for continuous circulation and 8.6 mK for single-shot operation. We describe its operating mechanism and the designs of key components, especially some unique designs including heat switch and alumina thermal link. Possible improvements in the future are also discussed.
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