Analysis and experimental validation of a design method for 5 K precooled Joule-Thomson coolers

IF 2.1 3区工程技术 Q3 PHYSICS, APPLIED

Cryogenics Pub Date : 2025-09-30 DOI:10.1016/j.cryogenics.2025.104209

Giorgio Ghilardi, Sangkwon Jeong

引用次数: 0

Abstract

A 2-stage precooled Joule-Thomson (J-T) refrigerator for potential cooling of superconducting nanowire single photon detector (SNSPD) is conceived, analyzed and tested. In the analysis, theoretical tools aimed at aiding the design process are presented. The effect of the precooling temperatures is discussed in detail. To validate the analysis, an experimental apparatus is built employing a commercial Gifford-McMahon (G-M) cryocooler. The system is built by repurposing commercial compressors for use with ⁴He. The complete system is composed of the G-M auxiliary cryocooler; the J-T refrigerator heat exchangers and expansion orifice, and the compressors with an oil removal system (ORS). The model associated with the analysis predicted the cold-tip temperature with a maximum error lower of 0.5 K. The whole system achieved a cooling power of 10 mW at 5 K.

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5k预冷焦耳-汤姆逊制冷机设计方法的分析与实验验证

设计了一种用于超导纳米线单光子探测器（SNSPD）潜在冷却的两级预冷焦耳-汤姆逊（J-T）制冷机，并对其进行了分析和测试。在分析中，提出了旨在帮助设计过程的理论工具。详细讨论了预冷温度的影响。为了验证分析结果，采用商用吉福德-麦克马洪（G-M）制冷机建立了实验装置。该系统是通过重新利用商用压缩机与4He一起使用而构建的。整套系统由G-M辅助制冷机组成；J-T制冷机热交换器和膨胀孔，以及带有除油系统（ORS）的压缩机。与分析相关联的模型预测冷尖温度的最大误差小于0.5 K。整个系统在5k时达到了10mw的冷却功率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Cryogenics 物理-热力学

CiteScore

3.80

自引率

9.50%

发文量

审稿时长

2.1 months

期刊介绍： Cryogenics is the world''s leading journal focusing on all aspects of cryoengineering and cryogenics. Papers published in Cryogenics cover a wide variety of subjects in low temperature engineering and research. Among the areas covered are: - Applications of superconductivity: magnets, electronics, devices - Superconductors and their properties - Properties of materials: metals, alloys, composites, polymers, insulations - New applications of cryogenic technology to processes, devices, machinery - Refrigeration and liquefaction technology - Thermodynamics - Fluid properties and fluid mechanics - Heat transfer - Thermometry and measurement science - Cryogenics in medicine - Cryoelectronics