IF 2.1 3区工程技术

Cryogenics Pub Date : 2025-09-27 DOI: 10.1016/j.cryogenics.2025.104207

Yanwei Liang , Yongfeng Qu , Hongbo Xu , Nan Peng , Jean-Michel Ghidaglia , Liqiang Liu , Jiansheng Zuo , Hongmin Liu , Changlei Ke , Kongrong Li

{"title":"Numerical simulation of air wall protection performance during liquid hydrogen leakage and analysis of key influencing factors","authors":"Yanwei Liang , Yongfeng Qu , Hongbo Xu , Nan Peng , Jean-Michel Ghidaglia , Liqiang Liu , Jiansheng Zuo , Hongmin Liu , Changlei Ke , Kongrong Li","doi":"10.1016/j.cryogenics.2025.104207","DOIUrl":"10.1016/j.cryogenics.2025.104207","url":null,"abstract":"<div><div>Liquid hydrogen is often the most suitable choice for both storage and transportation in various situations. However, once a leak occurs, liquid hydrogen will rapidly evaporate into gaseous hydrogen, causing significant potential hazards. Therefore, it is crucial to study measures to improve the safety of liquid hydrogen use. This paper proposes a method called “air wall.” A comparison between the traditional bund wall system and the air wall show that the air wall offers more effective protection. Analysis of the airflow speed of theair wall reveals that higher airflow speeds enhance protective effects. By adjusting the activation time of the air wall, it was found that there is no need for continuous operation; activating the air wall before the arrival of hydrogen can also provide effective protection. The size of the air wall was also studied, and it was found that at the same air flow velocity, smaller air walls provide poorer protection. Finally, the impact of various atmospheric wind speeds on the air wall was analyzed, and it was found that the higher wind speed, the greater air wall speed for effective protection. This protective method is expected to be widely implemented in liquid hydrogen storage areas.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"152 ","pages":"Article 104207"},"PeriodicalIF":2.1,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental evaluation of a thermal interface and a cold circulator used in remote cooling loop driven by a cryocooler 冷冻机驱动的远程冷却回路用热界面和冷循环器的实验评价

IF 2.1 3区工程技术

Cryogenics Pub Date : 2025-09-25 DOI: 10.1016/j.cryogenics.2025.104199

Weronika Głuchowska , Thomas Hanhart , Tomasz Banaszkiewicz , Philippe Benoit , Benoit Curé , Maciej Chorowski , Alexey Dudarev , Anna Kario , Matthias Mentink , Jasper Van Der Werf

{"title":"Experimental evaluation of a thermal interface and a cold circulator used in remote cooling loop driven by a cryocooler","authors":"Weronika Głuchowska , Thomas Hanhart , Tomasz Banaszkiewicz , Philippe Benoit , Benoit Curé , Maciej Chorowski , Alexey Dudarev , Anna Kario , Matthias Mentink , Jasper Van Der Werf","doi":"10.1016/j.cryogenics.2025.104199","DOIUrl":"10.1016/j.cryogenics.2025.104199","url":null,"abstract":"<div><div>Due to helium’s limited accessibility and non-renewable nature, superconducting systems need more sustainable alternatives to cryogenic plants, which feature elevated helium losses. Cryogenic systems based on commercially available cryocoolers are seen as a promising solution. In this paper, a remote cooling loop driven by a cryocooler and cold circulator is introduced, and an experimental study of the heat exchanger serving as the cryocooler-to-gas thermal interface is presented. This thermal interface is intended for integration into a remote cooling system, which is designed to intercept the 300 W heat load from 3 kA hybrid current leads. The heat exchanger successfully maintained a gas outlet temperature below 50 K under 300 W. A mathematical model is developed to forecast both the gas outlet temperatures and the cooling capacity of the heat exchanger for a given geometry, and validation is conducted using experimental data. Furthermore, an experimental verification of the isentropic efficiency of the selected cold circulator is included. Finally, an estimation of the mass flow within the hydraulic system is presented and compared with the measured results.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"152 ","pages":"Article 104199"},"PeriodicalIF":2.1,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal design and performance of cryocatcher for BRing-S BRing-S型低温捕集器的热设计与性能

IF 2.1 3区工程技术

Cryogenics Pub Date : 2025-09-20 DOI: 10.1016/j.cryogenics.2025.104197

Yagang Shi , Weiping Chai , Shuping Chen , Dongsheng Ni , Xudong Wang , Jianlong Liu , Xiaowei Xu , Jiajian Ding , Meitang Tang , Lijun Mao , Jiancheng Yang

{"title":"Thermal design and performance of cryocatcher for BRing-S","authors":"Yagang Shi , Weiping Chai , Shuping Chen , Dongsheng Ni , Xudong Wang , Jianlong Liu , Xiaowei Xu , Jiajian Ding , Meitang Tang , Lijun Mao , Jiancheng Yang","doi":"10.1016/j.cryogenics.2025.104197","DOIUrl":"10.1016/j.cryogenics.2025.104197","url":null,"abstract":"<div><div>The cryocatcher serves as a crucial apparatus for mitigating the dynamic vacuum effects within a superconducting synchrotron. In anticipation of the stringent beam collimation demands imposed by the high-intensity beam operation in the forthcoming BRing-S project, a prototype cryocatcher has been meticulously designed and fabricated. This study is dedicated to an in-depth examination of the thermal design and cryogenic performance of the cryocatcher. A comprehensive thermodynamic model has been developed to facilitate finite element analysis and numerical simulations of the heat transfer mechanisms inherent in its critical components, including the target block, tension rods, thermal shield, beam chamber and bellows, the structure was optimized based on simulation results to minimize heat leakage. Additionally, this work systematically summarizes the thermal loads encountered at various temperature regimes. The cryocatcher subsequently underwent cooling tests, the results of which corroborate that the thermal design aligns with the predefined performance benchmarks. Consequently, this study has accumulated relevant experience for the subsequent formal research on cryocatcher and laid a foundation for the future online operation of cryocatcher.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"152 ","pages":"Article 104197"},"PeriodicalIF":2.1,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of a fixed-interface multi-region model for long-term evaporation in cryogenic propellant tanks 低温推进剂储罐长期蒸发的固定界面多区域模型评价

IF 2.1 3区工程技术

Cryogenics Pub Date : 2025-09-18 DOI: 10.1016/j.cryogenics.2025.104202

Rongrong Lv , Ye Wang , Zhongqi Zuo , Yonghua Huang

{"title":"Evaluation of a fixed-interface multi-region model for long-term evaporation in cryogenic propellant tanks","authors":"Rongrong Lv , Ye Wang , Zhongqi Zuo , Yonghua Huang","doi":"10.1016/j.cryogenics.2025.104202","DOIUrl":"10.1016/j.cryogenics.2025.104202","url":null,"abstract":"<div><div>Recent booming applications of cryogenic fluids in aerospace engineering, liquefied natural gas industry, and hydrogen energy have accentuated the demands for long-term cryogenic storage. A more comprehensive understanding of cryogenic evaporation in storage tanks has become a priority for reducing boil-off loss, extending storage duration, and guaranteeing container safety. Efficient modeling of interfacial heat transport has become the bottleneck for high-precision prediction of the steady-state evaporation of cryogenic fluids. This study addresses this challenge by developing a fixed-interface multi-region model, to simulate the steady-state evaporation characteristics in cryogenic storage tanks. The fluid domain is modeled as two regions for liquid and vapor phases and a fixed interface. The model is validated to accurately predict the temperature jump at the liquid–vapor interface. An analysis of the interfacial energy transport patterns is also provided. Furthermore, the performance of the fixed-interface model was compared with a VOF model in terms of simulation speed, interfacial temperature, and interface geometry. The results showed that the fixed multi-region model accurately predicted the interfacial temperature distributions, particularly in the vicinity of the liquid–vapor interface compared to the VOF model, while demanding only 3.6 % of the computational resources.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"152 ","pages":"Article 104202"},"PeriodicalIF":2.1,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Review and history of sub-Kelvin 3He sorption cooling systems: From basic mechanisms to applications 亚开尔文3He吸附冷却系统的回顾和历史：从基本机制到应用

IF 2.1 3区工程技术

Cryogenics Pub Date : 2025-09-17 DOI: 10.1016/j.cryogenics.2025.104201

Xiang Fan , Juan Wang , Shubao Zhao , Jia Quan , Miguang Zhao , Jingtao Liang

{"title":"Review and history of sub-Kelvin 3He sorption cooling systems: From basic mechanisms to applications","authors":"Xiang Fan , Juan Wang , Shubao Zhao , Jia Quan , Miguang Zhao , Jingtao Liang","doi":"10.1016/j.cryogenics.2025.104201","DOIUrl":"10.1016/j.cryogenics.2025.104201","url":null,"abstract":"<div><div>Sub-Kelvin technologies are essential for applications such as space detection, quantum computing, and condensed-matter physics. Among traditional sub-Kelvin technologies, including sorption cooling, adiabatic demagnetization refrigeration, and dilution refrigeration, sorption cooling shows unique competitiveness in space environments for its vibration-free operation, compactness, and absence of electromagnetic interference. Based on the principle of pressure reduction evaporation cooling, <sup>3</sup>He sorption coolers achieve temperatures around 300 mK, surpassing <sup>4</sup>He sorption coolers (∼800 mK) due to higher vapour pressures and the absence of superfluid constraints. <sup>3</sup>He sorption systems, initially developed in the 1960s, remain crucial for missions requiring reliability and simplicity. Advancements include modular and multi-stage designs, extending operating temperatures to 250 mK. Continuous systems using two sorption pumps mitigate intermittency, enabling stable cooling for weeks. Space applications face micro-gravity challenges, which are addressed by using porous matrices that leverage capillary forces to confine liquid <sup>3</sup>He. Successful implementations include the Herschel satellite, which achieved 290 mK with 10 μW cooling power. Hybrid coolers, which integrate sorption coolers with ADR or DR, achieve ultra-low temperatures (∼50 mK), essential for missions like SPICA and ATHENA. Current research is focused on gravity-independent designs, mechanical precooling to eliminate liquid helium dependency, and enhancing cryochains from 300 K to 50 mK. This paper reviews <sup>3</sup>He sorption cooler principles, technological evolution from cryostats to modular systems, space adaptations, and hybrid architectures. Key challenges related to non-equilibrium adsorption and micro-gravity fluid dynamics are discussed.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"152 ","pages":"Article 104201"},"PeriodicalIF":2.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of DCT with post-tempering on impact toughness and tensile strength of nimonic-90 superalloy 后回火DCT对镍-90高温合金冲击韧性和抗拉强度的影响

IF 2.1 3区工程技术

Cryogenics Pub Date : 2025-09-17 DOI: 10.1016/j.cryogenics.2025.104200

Gurkirat Singh, Kailash. N. Pandey

{"title":"Effect of DCT with post-tempering on impact toughness and tensile strength of nimonic-90 superalloy","authors":"Gurkirat Singh, Kailash. N. Pandey","doi":"10.1016/j.cryogenics.2025.104200","DOIUrl":"10.1016/j.cryogenics.2025.104200","url":null,"abstract":"<div><div>The present work focusses on the effect of Deep Cryogenic Treatment on impact toughness and tensile strength of Nimonic-90 super alloy. Significant improvement in tensile strength and impact toughness has been recorded due to the evolution in microstructure at cryogenic temperature (−196 °C) which includes grain size, micro voids and dimples. Out of 24 h and 36 h soaking period, best results in impact toughness, tensile strength and yield strength were obtained corresponding to 36 h soaking period. The maximum percentage improvement in impact toughness, tensile strength and yield strength was 46.32 %, 19.34 % and 17.16 % respectively when compared with untreated sample. The maximum percentage elongation was observed for the sample which was soaked for 24 h. In 36 h soaking period, the amount of dimples was more as compared to 24 h soaking period. The brittle fracture zone decreased in the Charpy impact samples with the increase in the soaking time from 24 h to 36 h. This was due to the formation of coarse and deeper dimples which absorbed more energy during fracture. The tensile strength and yield strength were found higher for 36 h soaking period than 24 h soaking period because in 24 h soaking period, the presence of voids and small number of carbides made the matrix of Nimonic-90 weaker than 36 h soaking period samples.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"152 ","pages":"Article 104200"},"PeriodicalIF":2.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145109637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of hard-way bending strain on the current-carrying properties of the REBCO tape 硬质弯曲应变对REBCO带载流性能的影响

IF 2.1 3区工程技术

Cryogenics Pub Date : 2025-09-11 DOI: 10.1016/j.cryogenics.2025.104191

Yishan Chen , Xu Wang , Jiahao Wan , Huajun Liu , Fang Liu , Jinggang Qin , Chao Zhou , Huan Jin , Peng Gao

{"title":"Effect of hard-way bending strain on the current-carrying properties of the REBCO tape","authors":"Yishan Chen , Xu Wang , Jiahao Wan , Huajun Liu , Fang Liu , Jinggang Qin , Chao Zhou , Huan Jin , Peng Gao","doi":"10.1016/j.cryogenics.2025.104191","DOIUrl":"10.1016/j.cryogenics.2025.104191","url":null,"abstract":"<div><div><em>RE</em>BCO superconducting tapes possess high critical temperature, large engineering critical current density, and high critical magnetic field, making them essential for winding high-field magnets above 20 T. Layer-wound coils offer advantages such as fewer joints and reduced Joule heating but involve inevitable hard-way bending, which induces strain that degrades critical current and can cause irreversible damage at high strain levels. This study investigates the effect of hard-way bending radius on the current-carrying properties of <em>RE</em>BCO tapes with different structures. Critical current measurements were conducted in liquid nitrogen, combined with theoretical calculations and finite element simulations to characterize strain distribution. The simulation accuracy was verified by the distributed optical fiber technique. Results reveal a nonlinear relationship between strain and hard-way bending radius, with strain concentrated at the tape edges. At a hard-way bending radius of 200 mm, the critical current of copper-plated tape decreased to 20 %, multi-filament tape to 18 %, while stainless steel-encapsulated tape retained 70 % of its critical current. These findings provide a theoretical basis for optimizing layer-wound coil fabrication.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"152 ","pages":"Article 104191"},"PeriodicalIF":2.1,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Magnetocaloric effect in Gd8P2O17 and Gd3PO7 Gd8P2O17和Gd3PO7的磁热效应

IF 2.1 3区工程技术

Cryogenics Pub Date : 2025-09-10 DOI: 10.1016/j.cryogenics.2025.104198

Tingwei Wan , Haojie Wang , Zuhua Chen , Yunhui Wang , Heng Tu , Zhenxing Li , Yanan Zhao , Jun Shen , Zhaojun Mo , Guochun Zhang

{"title":"Magnetocaloric effect in Gd8P2O17 and Gd3PO7","authors":"Tingwei Wan , Haojie Wang , Zuhua Chen , Yunhui Wang , Heng Tu , Zhenxing Li , Yanan Zhao , Jun Shen , Zhaojun Mo , Guochun Zhang","doi":"10.1016/j.cryogenics.2025.104198","DOIUrl":"10.1016/j.cryogenics.2025.104198","url":null,"abstract":"<div><div>The gadolinium-rich phosphates, Gd<sub>8</sub>P<sub>2</sub>O<sub>17</sub> and Gd<sub>3</sub>PO<sub>7</sub>, were successfully synthesized by the high-temperature solid-phase reaction method. Gd<sub>8</sub>P<sub>2</sub>O<sub>17</sub> and Gd<sub>3</sub>PO<sub>7</sub> crystallize in the monoclinic system. Their magnetic and magnetocaloric properties were systematically investigated by measuring magnetic susceptibility (χ) and magnetization (M). The phase transition temperatures for Gd<sub>3</sub>PO<sub>7</sub> and Gd<sub>8</sub>P<sub>2</sub>O<sub>17</sub> were observed to be below 2 K. The max magnetic entropy change (<span><math><mrow><msubsup><mi>-ΔS</mi><mtext>M</mtext><mi>max</mi></msubsup></mrow></math></span>) of Gd<sub>8</sub>P<sub>2</sub>O<sub>17</sub> reaches 21.7 J·kg<sup>−1</sup> K<sup>−1</sup> at 2 K and 5 T, which is comparable to that of the commercial Gd<sub>3</sub>Ga<sub>5</sub>O<sub>12</sub> under the same conditions. Gd<sub>3</sub>PO<sub>7</sub> exhibits a <span><math><mrow><msubsup><mi>-ΔS</mi><mtext>M</mtext><mi>max</mi></msubsup></mrow></math></span> of 10.3 J·kg<sup>−1</sup> K<sup>−1</sup> at 6 K and 5 T, similar to the value of LiDyP<sub>4</sub>O<sub>12</sub> under the same conditions. Moreover, the relative cooling capacity (RCP) and refrigeration capacity (RC) values reach 165.05 and 123.94 J/kg for Gd<sub>3</sub>PO<sub>7</sub> and 152.14 and 108.99 J/kg for Gd<sub>8</sub>P<sub>2</sub>O<sub>17</sub> under the magnetic field changes of 5 T. These results indicate that Gd<sub>8</sub>P<sub>2</sub>O<sub>17</sub> and Gd<sub>3</sub>PO<sub>7</sub> may be promising candidates for ultra-low temperature magnetic refrigeration applications.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"152 ","pages":"Article 104198"},"PeriodicalIF":2.1,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation on surface insulating performance of epoxy-alumina and epoxy-zinc oxide nanocomposites at cryogenic temperatures 环氧-氧化铝和环氧-氧化锌纳米复合材料的低温表面绝缘性能研究

IF 2.1 3区工程技术

Cryogenics Pub Date : 2025-09-09 DOI: 10.1016/j.cryogenics.2025.104196

Di Jiang , Zhicong Miao , Yuqiang Zhao , Zhen Geng , Yunqi Xing , Rongjin Huang , Laifeng Li , Yuan Zhou

{"title":"Investigation on surface insulating performance of epoxy-alumina and epoxy-zinc oxide nanocomposites at cryogenic temperatures","authors":"Di Jiang , Zhicong Miao , Yuqiang Zhao , Zhen Geng , Yunqi Xing , Rongjin Huang , Laifeng Li , Yuan Zhou","doi":"10.1016/j.cryogenics.2025.104196","DOIUrl":"10.1016/j.cryogenics.2025.104196","url":null,"abstract":"<div><div>The electrical insulation properties of epoxy resin at low temperatures are crucial for the encapsulation of superconducting magnets. Nanoparticle filling serves as an effective approach to enhance the electrical insulation performance of epoxy resin. This paper comparatively investigates the surface insulating properties of epoxy-alumina (Al<sub>2</sub>O<sub>3</sub>/EP) and epoxy-zinc oxide (ZnO/EP) nanocomposites at cryogenic temperatures from 10 K to 299 K. The addition of nanofillers introduces more traps in the epoxy nanocomposites, which makes the time scales of the above-surface and sub-surface processes coincide with each other when the temperature is further reduced (lower than 80 K), resulting in a downward trend in the flashover voltage of the epoxy nanocomposite when the temperature is further reduced. Experimental results demonstrate that Al<sub>2</sub>O<sub>3</sub> nanofillers can improve the surface insulation performance of the nanocomposite more comprehensively than ZnO nanofillers. Al<sub>2</sub>O<sub>3</sub>/EP has a higher flashover strength than neat epoxy, regardless of temperature.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"152 ","pages":"Article 104196"},"PeriodicalIF":2.1,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145047375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and construction of a small-scale layer-wound no-insulation (LW-NI) insert magnet with REBCO-coated conductors operating in a background magnetic field exceeding 15 T 小型层绕无绝缘（LW-NI）插入式磁体的设计和建造，该磁体具有rebco涂层导体，可在超过15t的背景磁场下工作

IF 2.1 3区工程技术

Cryogenics Pub Date : 2025-09-07 DOI: 10.1016/j.cryogenics.2025.104190

JH. Wan , YS. Chen , X. Wang , C. Zhou , XT. Zhang , H. Jin , F. Liu , JG. Qin , HJ. Liu , P. Gao

{"title":"Design and construction of a small-scale layer-wound no-insulation (LW-NI) insert magnet with REBCO-coated conductors operating in a background magnetic field exceeding 15 T","authors":"JH. Wan , YS. Chen , X. Wang , C. Zhou , XT. Zhang , H. Jin , F. Liu , JG. Qin , HJ. Liu , P. Gao","doi":"10.1016/j.cryogenics.2025.104190","DOIUrl":"10.1016/j.cryogenics.2025.104190","url":null,"abstract":"<div><div>Rare-earth-based barium copper oxide (REBCO) coated conductors have shown impressive performance in current transport capability and mechanical force tolerance in high magnetic field conditions, so their application as layer-wound insert magnets for the construction of a high-field nuclear magnetic resonance (NMR) superconducting magnet is reasonably expected. However, the inhomogeneous stress distribution induced by the screening current, coupled with significant vertical magnetic field exposure at the end of the magnet, poses threats to the mechanical stability of the layer-wound insert magnet. Meanwhile, the quench protection in REBCO magnets is a critical problem; adopting no-insulation winding methods can provide the magnet with self-protecting capability. To verify the feasibility of the manufacturing process for the layer-wound magnet and to accumulate technological experience for the subsequent construction of NMR magnets, a layer-wound no-insulation (LW-NI) insert magnet was fabricated with REBCO-coated conductors. The winding has an inner diameter of 40 mm, an outer diameter of 42 mm, and a total height of 66 mm; nine layers of the insert magnet were wound with 16 turns per layer. The layer-wound magnet successfully energised with a current of 480 A (1 µV/cm quench criterion) and generated a self-field of 1.13 T in the axial direction of the magnet in an external 14 T background magnetic field (15.13 T in total) at 4.2 K.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"152 ","pages":"Article 104190"},"PeriodicalIF":2.1,"publicationDate":"2025-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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