High performance of liquid nitrogen zero boil-off system based on high-purity germanium detection

Kai Zhang; Jiayi Zhou; Dongdong Wang; Yulei Su; Huaikuang Ding; Huabiao Zhang

doi:10.1117/12.2679694

18 July 2023 High performance of liquid nitrogen zero boil-off system based on high-purity germanium detection

Kai Zhang, Jiayi Zhou, Dongdong Wang, Yulei Su, Huaikuang Ding, Huabiao Zhang

Proceedings Volume 12722, Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023); 127220F (2023) https://doi.org/10.1117/12.2679694
Event: International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023), 2023, Hangzhou, China

Abstract

In this paper, a liquid nitrogen zero boil-off (ZBO) system is designed for the detection of high-purity germanium(HPGe). The system has the characteristics of lightweight, low heat leakage, and high intensity. Its no-load static evaporation rate is 0.12L/d, which is about 50% of the traditional biological container. When simulating the heat leakage of 1L/d of HPGe detector, but the actual 0.69L/d, the system's static evaporation rate test data is about 0.78L/d, and the relative error is about 4% with high consistency. Therefore, when the actual 1L/d heat leakage, the total heat leakage is about 1.2L/d, which is 30%-40% of similar products, and the performance is greatly improved. The system controls the output power of the refrigerator through the change of pressure. With the special air duct, the performance of the refrigerator is improved, and the high performance of ZBO is realized, which provides the necessary conditions for the continuous detection of HPGe.

Citation Download Citation

Kai Zhang, Jiayi Zhou, Dongdong Wang, Yulei Su, Huaikuang Ding, and Huabiao Zhang "High performance of liquid nitrogen zero boil-off system based on high-purity germanium detection", Proc. SPIE 12722, Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023), 127220F (18 July 2023); https://doi.org/10.1117/12.2679694

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KEYWORDS

Nitrogen

Cryocoolers

Germanium

Cryogenics

Finite element methods

Control systems

Vacuum

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