IEEE Transactions on Applied Superconductivity最新文献_第3页

Current Sharing and Mechanical Properties of Slot-n-Fill REBCO Tapes

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-03-04 DOI: 10.1109/TASC.2025.3547318

Shengchen Xue;Lingfeng Zhu;Jian Rong;Nghia Mai;Yi Li;Siwei Chen;Umesh Sambangi;Jithin Peram;Venkat Selvamanickam

引用次数: 0

Modeling and Simulation of Microwave Kinetic Inductance Detector Readout System Using Simulink and RF Blockset

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-03-04 DOI: 10.1109/TASC.2025.3547281

Taehoon Kim

引用次数: 0

Geometry Dependent Superconductive Transition of Nb Nanostructures

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-03-03 DOI: 10.1109/TASC.2025.3546930

Ivan De Carlo;Matteo Fretto;Natascia De Leo;Gianluca Milano

{"title":"Geometry Dependent Superconductive Transition of Nb Nanostructures","authors":"Ivan De Carlo;Matteo Fretto;Natascia De Leo;Gianluca Milano","doi":"10.1109/TASC.2025.3546930","DOIUrl":"https://doi.org/10.1109/TASC.2025.3546930","url":null,"abstract":"Recently, superconducting nanostructures gained particular attention due to the visualisation of some intriguing phenomena, such as phase fluctuations, quantum phase slip, shape resonance in critical temperature, allowing the definition of a tailored superconducting nanodevice with the desired superconducting features, quantum phenomena. A deep investigation into the relationship between superconductivity, low dimensionality, quantum phenomena should be performed, in order to explain the emergence mechanism of these effects in nanostructures, how superconductivity is affected. In the following, we report on the investigation of the superconductive transition in triangular-shaped Nb pads connecting a Nb nanostripe. As revealed by <italic>R vs T curves, and the superconductive transition is observed to be characterised by two regions: i) a first smooth and wide transition reflecting the continuous reduction in the width of the Nb triangular pads that progressively experience superconductive transition, and ii) a more abrupt transition reflecting the transition of the Nb nanostripe. This work could pave the way concerning the realisation of Nb nanostructures with tunable critical temperature, transition width, and slope.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655098","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 Study of Fully Superconducting Motor With MgB$_{2}$ Wire and YBCO Bulk Combination for Brushless Operation

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-03-03 DOI: 10.1109/TASC.2025.3542340

Jaheum Koo;JuKyung Cha;Jonghoon Yoon;Wonseok Jang;Dongwoo Lee;In Gyeong Park;Sang Heon Lee;Seungyong Hahn;Sangjin Lee

{"title":"Design Study of Fully Superconducting Motor With MgB$_{2}$ Wire and YBCO Bulk Combination for Brushless Operation","authors":"Jaheum Koo;JuKyung Cha;Jonghoon Yoon;Wonseok Jang;Dongwoo Lee;In Gyeong Park;Sang Heon Lee;Seungyong Hahn;Sangjin Lee","doi":"10.1109/TASC.2025.3542340","DOIUrl":"https://doi.org/10.1109/TASC.2025.3542340","url":null,"abstract":"In response to increasing environmental regulations and the push towards electrification, superconducting motors have gained significant interest due to their high power density potential. This paper presents the design and analysis of a conceptual fully superconducting brushless motor featuring MgB<inline-formula><tex-math>$_{2}$</tex-math></inline-formula> armature windings and YBCO bulk superconductors in the rotor. The proposed motor utilizes post-assembly magnetization using field cooling, achieving a trapped magnetic field exceeding 2 T. Through optimization and magnetization analysis, the YBCO bulk-type designed motor calculated a 61% improvement in power density compared to a permanent magnet-type designed motor. The design also shows thermal losses of 1.58 kW, which can be effectively covered using LH<inline-formula><tex-math>$_{2}$</tex-math></inline-formula> cooling. These results present the feasibility of a high-performance, brushless design with HTS bulk field magnets, paving the way for relatively compact cryogenic motor applications.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621613","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

Comparative Study of Numerical Modeling Methods for a Flux-Pumped Josephson Parametric Amplifier

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-03-03 DOI: 10.1109/TASC.2025.3546921

Seong Hyeon Park;Gahyun Choi;Bokyung Kim;Gyunghun Kim;Yong-Ho Lee;Seungyong Hahn

{"title":"Comparative Study of Numerical Modeling Methods for a Flux-Pumped Josephson Parametric Amplifier","authors":"Seong Hyeon Park;Gahyun Choi;Bokyung Kim;Gyunghun Kim;Yong-Ho Lee;Seungyong Hahn","doi":"10.1109/TASC.2025.3546921","DOIUrl":"https://doi.org/10.1109/TASC.2025.3546921","url":null,"abstract":"Quantum-limited noise amplifiers based on superconducting Josephson junction elements are essential components for measuring low-power signals in a wide range of applications. The gain bandwidth of a flux-pumped Josephson parametric amplifier can be broadened by coupling junction elements with an impedance-matching network. Well-known modeling methods for these amplifiers typically assume ideal lumped-element circuits for passive components, but often overlook unexpected resonant modes arising from the bulk geometric features. To address this challenge, flux-pumped junction elements can be simulated using finite-element analysis (FEA) combined with the pumpistor modeling method, which accurately accounts for the geometric features of arbitrary impedance-matching circuits. Here, we present a benchmark study using a circuit topology to compare different modeling methods: (1) the coupled mode network method, (2) the harmonic balance method, (3) the analytical pumpistor method, and (4) the FEA-assisted pumpistor method. Our results highlight the importance of accurately reflecting geometric features to prevent unexpected resonant modes and avoid detuning from the target flux bias values.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-6"},"PeriodicalIF":1.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667268","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

Enhanced Model for Non-Insulated HTS Coils

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-03-03 DOI: 10.1109/TASC.2025.3546873

Stefano Sorti;Lorenzo Balconi;Gabriele Crespi;Lucio Rossi;Carlo Santini;Marco Statera

{"title":"Enhanced Model for Non-Insulated HTS Coils","authors":"Stefano Sorti;Lorenzo Balconi;Gabriele Crespi;Lucio Rossi;Carlo Santini;Marco Statera","doi":"10.1109/TASC.2025.3546873","DOIUrl":"https://doi.org/10.1109/TASC.2025.3546873","url":null,"abstract":"This paper addresses the topic of modelling 2 G HTS tapes and coils, especially (but not limited to) Non-Insulated (NI) devices. We propose a novel 3D electromagnetic Volume Integral Formulation (VIM) for homogenized coils. This model combines the flexibility of distributed circuit models with the numerical approach of Finite Element Methods (FEM). It offers some distinctive features if compared to already available integral formulations (such as Partial Element Equivalent Circuit): first, it describes the current vector potential <bold>T with quadratic shape functions, resulting in non-constant current densities <bold>J inside mesh elements. Secondly, it allows for homogenization of coil turns, together with arbitrarily curved geometries. The results of the model are verified against a COMSOL simulation. The discussion of the model includes also a fast current-sharing calculation in case of overcurrent, with the aim of providing comprehensive heat losses, to then feed thermal models. This work can contribute in better describing and understanding the behavior of NI coils under most operative conditions, expanding the capability of testing and diagnosing these devices.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688143","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

Experimental Validation of a Scaling Law for the Critical Current of Commercial REBCO Tapes as a Function of Magnetic Field and Temperature

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-02-28 DOI: 10.1109/TASC.2025.3543797

G. Succi;A. Ballarino;S. C. Hopkins;Y. Yang

{"title":"Experimental Validation of a Scaling Law for the Critical Current of Commercial REBCO Tapes as a Function of Magnetic Field and Temperature","authors":"G. Succi;A. Ballarino;S. C. Hopkins;Y. Yang","doi":"10.1109/TASC.2025.3543797","DOIUrl":"https://doi.org/10.1109/TASC.2025.3543797","url":null,"abstract":"Much information is lacking at present on the electrical properties of commercial REBCO tapes. This work, which builds on a previous paper of the same authors, presents the results of an experimental campaign aimed at deriving the critical current of tapes from SuperPower, Fujikura, Faraday Factory, and Shanghai Superconductor Technology. The campaign was conducted by applying both the transport method at 4.2 K, in perpendicular background magnetic fields of up to 15 T, and the magnetization method from 4.2 K up to the critical temperature in fields of up to 10 T. This latter method was adopted to determining the so-called crossover field, <inline-formula><tex-math>${{B}_0}$</tex-math></inline-formula>, at which the transition from single vortex pinning to collective pinning takes place. <inline-formula><tex-math>${{B}_0}$</tex-math></inline-formula> is challenging to determine by the transport method because of the high currents involved (at 4.2 K, <inline-formula><tex-math>${{B}_0}$</tex-math></inline-formula> is roughly 1 T, which corresponds to currents above 1500 A, for a 4 mm tape). Magnetization measurements corroborate transport measurements at 4.2 K both below <inline-formula><tex-math>${{B}_0}$</tex-math></inline-formula> and up to 10 T. Further magnetization measurements above 4.2 K allow the temperature dependence of the scaling parameters to be derived, for correlation with the methodology of flux pinning enhancement by different manufacturers. This provides insights about the effectiveness and interplay of pinning mechanisms.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-9"},"PeriodicalIF":1.7,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143654960","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

The Bending Performance Study of Bridge-Type Butt Joint of REBCO Tapes

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-02-28 DOI: 10.1109/TASC.2025.3546931

Jingli Cao;Menglin Wang;Yatian Pei;Qingyuan Li;Ling Zhao;Qingjin Xu;Min Zhang;Hui Yang;Feipeng Ning

{"title":"The Bending Performance Study of Bridge-Type Butt Joint of REBCO Tapes","authors":"Jingli Cao;Menglin Wang;Yatian Pei;Qingyuan Li;Ling Zhao;Qingjin Xu;Min Zhang;Hui Yang;Feipeng Ning","doi":"10.1109/TASC.2025.3546931","DOIUrl":"https://doi.org/10.1109/TASC.2025.3546931","url":null,"abstract":"To meet the magnetic field design requirements of a new detector for the Circular Electron Positron Collider, a novel aluminum-stabilized stacked rare-earth barium copper oxide (REBCO) tape cable has been proposed and developed. Bridge-type butt joints are utilized to interconnect the REBCO tapes within the cable for the production of kilometer-scale cables. In this investigation, bridge-type butt joints of the REBCO tape were fabricated using soldering techniques, and their bending performance under various bending diameters at 77 K and self-field conditions was examined through finite-element analysis and bending tests. The simulation and experimental results showed a gradual degradation in the critical current (<italic>Ic) of the bridge-type butt joint under bending strain. Enhanced bending performance was achieved by positioning the joint gap at the lower side and increasing the gap between joints. When the gap distance is 10 mm, the critical bending radius threshold may lie between 25 and 20 mm. Finite-element analysis revealed a notable degradation in <italic>Ic when the equivalent strain surpassed 0.4%, indicating uneven stress distribution during bending, leading to localized areas experiencing elevated stress levels that could result in potential damage and degradation.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 3","pages":"1-8"},"PeriodicalIF":1.7,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143706795","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

Length-Resolved Measurement of Radiation Induced Attenuation in Quench Detection Optical Fibers With Photobleaching

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-02-27 DOI: 10.1109/TASC.2025.3543808

Owen Duke;Joseph Desroches;Erica Salazar

{"title":"Length-Resolved Measurement of Radiation Induced Attenuation in Quench Detection Optical Fibers With Photobleaching","authors":"Owen Duke;Joseph Desroches;Erica Salazar","doi":"10.1109/TASC.2025.3543808","DOIUrl":"https://doi.org/10.1109/TASC.2025.3543808","url":null,"abstract":"Fiber-optic temperature and strain measurement systems are a promising technology for quench detection in insulated HTS magnets because of their compact form factor, immunity to electromagnetic noise, and fully dielectric construction. (Salazar et al. 2021) One of the key challenges to implementing these technologies in magnets for fusion devices is that ionizing radiation causes severe attenuation in the quench detection fibers. This attenuation is exacerbated by the low operating temperatures of HTS magnets (<inline-formula><tex-math>$sim$</tex-math></inline-formula> 20 K) and the long fiber lengths required for quench detection in power-plant scale magnetic confinement fusion systems (<inline-formula><tex-math>$sim$</tex-math></inline-formula> 200 m). (Blanc et al. 2017) In a previous paper we demonstrated that the survivable dose of a quench detection system operating at 1550 nm can be extended by more than 2,000x through continuous photobleaching at 970 nm. (Duke et al. 2024) Here we present an experiment investigating the effect of 970 nm photobleaching on fibers of significant length (up to 250 m) irradiated at 77 K with RIA near 1550 nm monitored using a novel length-resolved measurement technique.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-4"},"PeriodicalIF":1.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143735460","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

Analysis on Arcing Reduction due to Driving Operation of Induction Motor through Application of SFCL in a Power Distribution System

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-02-27 DOI: 10.1109/TASC.2025.3540996

Seung-Su Choi;Min-Ho Yoon;Chan-Muk Park;Sung-Hun Lim

{"title":"Analysis on Arcing Reduction due to Driving Operation of Induction Motor through Application of SFCL in a Power Distribution System","authors":"Seung-Su Choi;Min-Ho Yoon;Chan-Muk Park;Sung-Hun Lim","doi":"10.1109/TASC.2025.3540996","DOIUrl":"https://doi.org/10.1109/TASC.2025.3540996","url":null,"abstract":"The induction motor is used as the wind turbine in a power distribution system, which is one of the renewable energy supplies. Renewable energy has been an alternative to satisfy the increasing power demand. However, the induction motor causes the arc due to the power line issues and the fault occurrences. The arc generation leads to the problem of the power supply to the system and large blackout. Arc current contains a lot of harmonic components, and the harmonic component of arc current in induction motors cause problems such as voltage waveform distortion, efficiency reduction, and power factor reduction. In this article, to protect the induction motor, the application of the superconducting fault current limiter (SFCL) using high temperature superconducting (HTSC) module was proposed and the arc current limiting operation at various locations of the arc experiments were performed. The arc characteristics are different according to the driving method of the induction motor. Also, frequency analysis of arc current was performed using fast Fourier transform (FFT) to analyze the harmonic component. Since the harmonic component also decreases as the arc current reduction, problems caused by the harmonic component can be reduced.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143706616","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