IEEE Transactions on Applied Superconductivity最新文献_第2页

Assessment of Hysteresis Losses in HTS Coils Designed for a Rotating Electrical Machine 旋转电机用高温超导线圈的磁滞损耗评估

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-09-15 DOI: 10.1109/TASC.2025.3609522

Giuseppe Messina;Deborah Buonafine;Gianluca De Marzi;Ferruccio Maierna

{"title":"Assessment of Hysteresis Losses in HTS Coils Designed for a Rotating Electrical Machine","authors":"Giuseppe Messina;Deborah Buonafine;Gianluca De Marzi;Ferruccio Maierna","doi":"10.1109/TASC.2025.3609522","DOIUrl":"https://doi.org/10.1109/TASC.2025.3609522","url":null,"abstract":"The development of superconducting machines has long been pursued due to their relevant power density advantages and high efficiency compared to conventional technologies. However, using superconductors under alternating current and/or magnetic field poses considerable challenges as they demonstrate non-negligible energy dissipation from the generated ac losses. This work investigates the electrical behavior of a high-temperature superconducting (HTS) coil designed for rotating electrical machines. Both experimental activities and simulation studies are conducted with the primary aim of estimating the ac transport current losses. Accordingly, a circular-shaped coil in a double-pancake configuration is assembled using GdBCO tape (12 mm × 0.15 mm) manufactured by SuNAM Co. Ltd.; it is subsequently tested under dc and ac conditions at cryogenic temperature. Simultaneously, numerical simulations are performed using the commercial software Comsol Multiphysics. Considering the anisotropic field dependence of the critical current density <italic>Jc(B), a 2D axial-symmetric model based on H-formulation is developed. Various applied frequency and peak current conditions are examined to optimize the design of an HTS coil for assembling the armature of superconducting electrical machines. Finally, the numerical results are validated by comparing them against the experimental data obtained.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 8","pages":"1-10"},"PeriodicalIF":1.8,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145141765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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IEEE Transactions on Applied Superconductivity Information for Authors IEEE应用超导信息汇刊

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-09-12 DOI: 10.1109/TASC.2025.3589838

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IEEE Transactions on Applied Superconductivity Subject Categories for Article Numbering Information 用于物品编号信息的应用超导主题分类

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-09-12 DOI: 10.1109/TASC.2025.3589836

引用次数: 0

IEEE Transactions on Applied Superconductivity Publication Information IEEE应用超导学报出版信息

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-09-12 DOI: 10.1109/TASC.2025.3589842

引用次数: 0

Elliptic Aperture CCT Coils for HTS Dipole Magnets 用于高温超导偶极磁体的椭圆孔径CCT线圈

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-09-12 DOI: 10.1109/TASC.2025.3609273

L. Brouwer;Y. Yan;X. Wang;J.F. Croteau;P. Ferracin;J.L Rudeiros Fernandez;A. Saravanan

{"title":"Elliptic Aperture CCT Coils for HTS Dipole Magnets","authors":"L. Brouwer;Y. Yan;X. Wang;J.F. Croteau;P. Ferracin;J.L Rudeiros Fernandez;A. Saravanan","doi":"10.1109/TASC.2025.3609273","DOIUrl":"https://doi.org/10.1109/TASC.2025.3609273","url":null,"abstract":"High-temperature REBa<inline-formula><tex-math>$_{2}$</tex-math></inline-formula>Cu<inline-formula><tex-math>$_{3}$</tex-math></inline-formula>O<inline-formula><tex-math>$_{7-x}$</tex-math></inline-formula> (REBCO) superconductors are a route to increase the field of accelerator magnets beyond the 15-16T practical limit of Nb<inline-formula><tex-math>$_{3}$</tex-math></inline-formula>Sn. REBCO cabled in a CORC geometry is a promising fit for this application, enabling the design of low inductance magnets with conductor transposition. However, the use of CORC in coils with the tight conductor bending radii typical of accelerator magnets remains a key challenge, with on-going research both on the conductor development and coil design fronts seeking to address this issue. In this work we explore the tradeoffs between circular and elliptic aperture canted-cosine-theta (CCT) coils when the conductor minimum bending radius is a key consideration, concluding that aperture ellipticity is an important free parameter in the optimization of magnetically efficient CORC dipole magnets. In particular, we show that elliptic bore designs enable a regime of smaller aperture HTS coils, an important result for LTS-HTS hybrid magnets and more generally for accelerator applications benefiting from non-circular magnet apertures. To this end we present an elliptic aperture dipole design optimized for hybrid testing within the US Magnet Development Program (US-MDP) and share 77 K test results of a prototype coil which provides first experimental confirmation of the advantages.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"36 3","pages":"1-7"},"PeriodicalIF":1.8,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Editorial: The 11th Workshop on Mechanical and Electromagnetic Properties of Composite Superconductors—MEM24 编者按：第11届复合超导体机械与电磁特性研讨会- mem24

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-09-11 DOI: 10.1109/TASC.2025.3599247

Najib Cheggour;Satoshi Awaji;Carmine Senatore

引用次数: 0

Simulation of Quench Behavior in CS LTS Magnets for Next-Generation Fusion Devices With Time-Varying Operation 用于下一代时变核聚变装置的CS - LTS磁体的淬火行为模拟

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-09-10 DOI: 10.1109/TASC.2025.3608818

Yu Chen;Yanlan Hu;Yezheng Xiao;Qing Yan;Longgui Zheng;Xinxin Zhu;Qicai Ni

{"title":"Simulation of Quench Behavior in CS LTS Magnets for Next-Generation Fusion Devices With Time-Varying Operation","authors":"Yu Chen;Yanlan Hu;Yezheng Xiao;Qing Yan;Longgui Zheng;Xinxin Zhu;Qicai Ni","doi":"10.1109/TASC.2025.3608818","DOIUrl":"https://doi.org/10.1109/TASC.2025.3608818","url":null,"abstract":"In the next generation of fusion devices, the central solenoid (CS) coil needs to withstand large alternating currents and rapidly changing magnetic fields to achieve plasma breakdown, configuration formation, and control. In this study, the quench behavior of a representative submodule (CS1U-LTS) is investigated under time-varying current and magnetic field conditions, where the local field ramp rate reaches approximately 2.5 T/s. This alternating operation mode significantly affects the stability of superconducting magnets. However, the current simulation of superconducting magnet quench is mostly based on the steady-state current and steady-state background field, which makes it difficult to reflect the quench propagation characteristics of superconductors under alternating conditions as the current and magnetic field intensity and direction change. To ensure the safe operation of the CS coils under alternating conditions, this article first analyzes the quench behavior in a reference case with constant peak current prior to an exponential discharge and determines the protection thresholds required to limit the hotspot temperature to below 150 K:200 mV voltage threshold and 0.5 s time threshold. The quench response at the positive and negative current peaks during time-varying operation is further analyzed. The results show that under the same protection conditions, the maximum temperature of the CS1U-LTS coil in alternating operation still meets the design requirements. In addition, this article compares the differences in quench propagation near the two peak points, revealing the impact of alternating operation on quench propagation behavior.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 8","pages":"1-9"},"PeriodicalIF":1.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145141769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of MARCO, the New Solenoidal Detector Magnet for the ePIC Experiment at BNL BNL ePIC实验用新型螺线管探测磁体MARCO的设计

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-09-10 DOI: 10.1109/TASC.2025.3608471

Valerio Calvelli;Christophe Berriaud;Clément Genot;Probir K. Ghoshal;Sandesh Gopinath;François-Paul Juster;Victor Kleymenov;Jean-Pierre Lottin;Lionel Quettier;Hugo Reymond;Michel Segreti;Rahul Sharma;Damien Simon;Francesco Stacchi;Eric Sun;Roberto Than;Roland Wimmer;Daniel Young;Elke Aschenauer;Rolf Ent;R. Rajput-Ghoshal

{"title":"Design of MARCO, the New Solenoidal Detector Magnet for the ePIC Experiment at BNL","authors":"Valerio Calvelli;Christophe Berriaud;Clément Genot;Probir K. Ghoshal;Sandesh Gopinath;François-Paul Juster;Victor Kleymenov;Jean-Pierre Lottin;Lionel Quettier;Hugo Reymond;Michel Segreti;Rahul Sharma;Damien Simon;Francesco Stacchi;Eric Sun;Roberto Than;Roland Wimmer;Daniel Young;Elke Aschenauer;Rolf Ent;R. Rajput-Ghoshal","doi":"10.1109/TASC.2025.3608471","DOIUrl":"https://doi.org/10.1109/TASC.2025.3608471","url":null,"abstract":"Magnet with renewed coils (MARCO) is the new superconducting solenoid for electron-proton/ion collider (ePIC), the general-purpose detector capable of delivering the full scientific scope of the electron–ion collider at Brookhaven National Laboratory (BNL). This 3.84-m-long solenoid, with a bore diameter of 2.84 m, will provide a magnetic field of 2.0 T at the center with a nominal current of 4 kA at 4.5 K, for a total stored energy of 45 MJ. Its conductor is an NbTi Rutherford in copper channel, specially designed to stand the high mechanical loads induced by the magnetic field. Its copper stabilizer will assure the protection in case of quench. The coils are wound into six layers inside a thin external mandrel in brass, with a triple role of mechanical reinforcement, cryogenic support for the thermosiphon circuit, and quench-back propagator. With a cold mass average radial thickness of just 7 cm, the magnet fulfills all the criteria of transparency for the particles directed to the hadronic calorimeter forecast around the cryostat. In this article, the design of MARCO is presented with a specific focus on the magnetic and quench analysis.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 8","pages":"1-20"},"PeriodicalIF":1.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145223705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Analysis of Critical Current Measurement for No-Insulation HTS Coil 无绝缘高温超导线圈临界电流测量分析

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-09-10 DOI: 10.1109/TASC.2025.3607477

Jiahao Li;Yong Chen;Kangshuai Wang;Benzhe Zhou;Jianhua Liu;Qiuliang Wang;Lei Qi

{"title":"Analysis of Critical Current Measurement for No-Insulation HTS Coil","authors":"Jiahao Li;Yong Chen;Kangshuai Wang;Benzhe Zhou;Jianhua Liu;Qiuliang Wang;Lei Qi","doi":"10.1109/TASC.2025.3607477","DOIUrl":"https://doi.org/10.1109/TASC.2025.3607477","url":null,"abstract":"Investigating electromagnetic characteristics of no-insulation (NI) high-temperature superconducting (HTS) coils is critical for advancing the use of HTS in many areas, such as energy, medical, and transportation. In this article, the charging and overcurrent test and the sudden discharging test are carried out on a 367.6-mm diameter NI HTS coil to obtain the electromagnetic parameters. It is found that significant radial current generated in the NI HTS coil during testing will cause obvious deviations between the fitted coil voltage and power supply current curve and the <italic>E–J power law characteristics, resulting in significant errors in the measured critical current (<italic>Ic) and <italic>n-value. To address this issue, the influence of radial current is considered in measuring <italic>Ic and <italic>n-value, thus enabling the precise determination of these values. Meanwhile, a finite-element model based on the <italic>T–<italic>A formulation has been developed to model NI HTS coils and simulate transient electromagnetic behavior during coil operation. Furthermore, the current distribution in NI HTS coils with different aperture sizes as well as in HTS coils with different contact resistivities during the ramp process is investigated, and the effects of different factors on <italic>Ic and <italic>n-value measurement are analyzed. The results provide theoretical foundations for performance evaluation and design optimization of NI HTS magnet systems.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 8","pages":"1-9"},"PeriodicalIF":1.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145223692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cryogenic Design and Thermal Analysis of EIC Central Detector (ePIC) Solenoid Magnet (MARCO) EIC中央探测器（ePIC）电磁磁铁（MARCO）的低温设计与热分析

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-09-10 DOI: 10.1109/TASC.2025.3608435

Sandesh Gopinath;Christophe Berriaud;Valerio Calvelli;Probir K. Ghoshal;Fracncois-Paul Juster;Victor Kleymenov;Jean-Pierre Lottin;Hugo Reymond;Michel Segreti;Damien Simon;Francesco Stacchi;Eric Sun;Daniel Young;Renuka Rajput-Ghoshal

引用次数: 0