IEEE Transactions on Applied Superconductivity最新文献

{"title":"IEEE Transactions on Applied Superconductivity Subject Categories for Article Numbering","authors":"","doi":"10.1109/TASC.2025.3529272","DOIUrl":"https://doi.org/10.1109/TASC.2025.3529272","url":null,"abstract":"","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 2","pages":"C3-C3"},"PeriodicalIF":1.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10903142","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on Ripple Loss of Self-Shielding Superconducting DC Cable Used in Liquid Hydrogen Energy Pipeline","authors":"Wei Pi;Pu Wang;Jingyi Yang;Heng Zhang;Junhua Cheng;Chengpeng Mao;Yinshun Wang","doi":"10.1109/TASC.2025.3545185","DOIUrl":"https://doi.org/10.1109/TASC.2025.3545185","url":null,"abstract":"Liquid hydrogen energy pipelines combine the transmission of electrical energy with hydrogen. Liquid hydrogen can not only be used as a cooling medium for superconducting dc cables but can also be used as a clean energy source for delivery, realizing highly efficient transmission of energy. Self-shielding superconducting dc cables (SSDCCs) have the advantages of no magnetic leakage and small critical current attenuation. This article presents a study of the application of the SSDCC in a liquid hydrogen energy pipeline. The critical current, magnetic field, and ripple loss of the cables at the temperature of liquid hydrogen are investigated by the T-A formulation. The findings indicate that the SSDCC can make the liquid hydrogen energy pipeline achieve more efficient transmission, which provides a novel perspective for the research of liquid hydrogen energy pipelines.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 3","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621688","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}

{"title":"A Current-Variation Based Quench Detection Method for Parallel Co-wound Superconducting AC Coils","authors":"Changhao Hu;Yi Lin;Yunfei Tan;Lei Wang;Jianzhao Geng","doi":"10.1109/TASC.2025.3545408","DOIUrl":"https://doi.org/10.1109/TASC.2025.3545408","url":null,"abstract":"Magnets wound with superconducting wires, which have high current-carrying capacity, are widely utilized in various applications. In some applications, alternating current (AC) is applied to superconducting magnets, such as in superconducting synchronous electrical machinery and superconducting transformers. Quench detection in superconducting magnets is a critical prerequisite for ensuring their safe operation. However, some conventional quench detection methods commonly used for direct current (DC) superconducting magnets face limitations when applied to those subjected to AC. In this article, we investigate quench-induced current variation characteristics in parallel co-wound superconducting magnets excited with AC current and propose a quench detection method based on current variation. We conducted circuit derivation and artificial quench experiments to validate our approach. Both derivation and experimental results demonstrate that our quench detection method can detect quench with high sensitivity and reliability. This work has potential applications in AC superconducting magnets and may contribute to reducing the risk of quench-induced damage in such systems.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688124","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}

{"title":"IEEE Transactions on Applied Superconductivity Information for Authors","authors":"","doi":"10.1109/TASC.2025.3529270","DOIUrl":"https://doi.org/10.1109/TASC.2025.3529270","url":null,"abstract":"","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 2","pages":"C4-C4"},"PeriodicalIF":1.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10902333","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"TechRxiv: Share Your Preprint Research with the World!","authors":"","doi":"10.1109/TASC.2025.3541461","DOIUrl":"https://doi.org/10.1109/TASC.2025.3541461","url":null,"abstract":"","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 2","pages":"1-1"},"PeriodicalIF":1.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10903145","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Scalable Microwave SQUID Multiplexer Readout Architecture for TES-Based THz Security Camera","authors":"Matthias Schmelz;Erik Heinz;Katja Peiselt;Gabriel Zieger;Oliver Brandel;Detlef Born;Jürgen Kunert;Michael Siegel;Vyacheslav Zakosarenko;Matthias Meyer;Ronny Stolz","doi":"10.1109/TASC.2025.3545212","DOIUrl":"https://doi.org/10.1109/TASC.2025.3545212","url":null,"abstract":"In this article, we have developed a scalable superconducting quantum interference device (SQUID)-based microwave multiplexer (µMUX) readout architecture adapted for arrays of transition edge sensors (TESs) to be exploited in a terahertz security camera. The camera system combines a scanning optics together with a 128-pixel TES array and aims for security gate operations with a standoff detection distance of up to 25 m. The developed frequency-domain µMUX is used to read out all feed-horn-coupled TESs based on aluminum thermistors, with noise limited by intrinsic TES noise. Both the TESs and µMUXs are operated in a compact cryostat with a base temperature of about 0.9 K. The µMUX has been fabricated in the cross-type <inline-formula><tex-math>$text{Nb}/ text{AlO}_{rm{x}}/ text{Nb}$</tex-math></inline-formula> Josephson junction process developed at the Leibniz Institute of Photonic Technology and incorporates high-quality superconducting thin-film resonators with resonant frequencies in the range of 5–6 GHz. An accordingly implemented field-programmable-gate-array-based readout electronics enables the simultaneous and continuous real-time readout of 128 rf-SQUIDs, including a flux ramp modulation scheme. In operation with the aluminum TES, we achieved a dark noise equivalent power of about <inline-formula><tex-math>$2.5; text{fW}/ text{Hz}^{1/ 2}$</tex-math></inline-formula> while providing a TES readout rate of 3.75 kHz, necessary for a video frame rate of 25 Hz of the security camera.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 3","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594280","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}

{"title":"Modelling of a Large-Scale Non-Insulated Non-Planar HTS Stellarator Coil Using Quanscient Allsolve","authors":"Tara Benkel;Mika Lyly;Janne Ruuskanen;Alexandre Halbach;Valtteri Lahtinen;Nicolo Riva","doi":"10.1109/TASC.2025.3545407","DOIUrl":"https://doi.org/10.1109/TASC.2025.3545407","url":null,"abstract":"Stellarators present features such as steady-state operation and intrinsic stability that make them more attractive than tokamaks in their scaling to fusion power plants. By leveraging more possible configurations, stellarators can be optimized for better engineering feasibility, e.g., resilience to manufacturing tolerances, reduced mechanical load on conductor, material optimization, cost of fabrication. Finite Element Analyses are crucial for the design and optimization of High-Temperature Superconducting (HTS) <italic>RE</i>BCO non-planar coils. However, accurate simulation of large-scale magnetostatic, mechanical, and quench models can take days or even weeks to compute. In this work, we present a model of a real-size, HTS, non-insulated, non-planar stellarator coil and perform in Quanscient Allsolve®, a transient simulation study including modelling quench, using the <inline-formula><tex-math>$H - varphi $</tex-math></inline-formula> formulation. It is shown that transient model benefits heavily from the built-in Domain Decomposition Method (DDM), which allows reaching reasonable computation times. Such models become then invaluable in predicting and understanding the complex behavior of non-insulated large-scale <italic>RE</i>BCO magnets, including their intrinsic energy imbalance.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667287","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}

{"title":"IEEE Transactions on Applied Superconductivity Publication Information","authors":"","doi":"10.1109/TASC.2025.3529276","DOIUrl":"https://doi.org/10.1109/TASC.2025.3529276","url":null,"abstract":"","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 2","pages":"C2-C2"},"PeriodicalIF":1.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10902337","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Toward Superconducting Neuromorphic Computing Using Single-Flux-Quantum Circuits","authors":"Zeshi Liu;Shuo Chen;Peiyao Qu;Guangming Tang;Haihang You","doi":"10.1109/TASC.2025.3544687","DOIUrl":"https://doi.org/10.1109/TASC.2025.3544687","url":null,"abstract":"Current artificial intelligence faces challenges in improving computational efficiency due to increasing scale and complexity. Superconducting circuit, as one of the most promising technologies in the post-Moore era, offers ultrahigh-speed computation and ultralow power consumption. Superconducting circuits are driven by pulses, which enables direct execution of pulse-based neuromorphic computing. Consequently, superconducting circuits hold the potential to facilitate higher efficiency and larger scale neuromorphic chips. However, existing efforts neglect the limitations and constraints of superconducting circuits, such as the extra overhead of pulse-based logic, the lack of superconducting memory, and low integration. Hence, their work cannot be utilized in fabricating real superconducting neuromorphic chips. This article introduces superconducting spiking neural network (SSNN), which aims to enable full neuromorphic computing on superconducting circuits. The design of SSNN addresses key issues including a superconducting circuit-based neuron model, weight processing methods suitable for superconducting pulses, and superconducting neuromorphic on-chip networks. SSNN enables complete neuromorphic computing on superconducting circuits. We validate the feasibility and accuracy of SSNN using a standard cell library of superconducting circuits and successfully fabricate the world's first superconducting neuromorphic chip. Our evaluation demonstrates a remarkable <inline-formula> <tex-math>$50times$</tex-math></inline-formula> increase in power efficiency compared to state-of-the-art semiconductor designs.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 3","pages":"1-14"},"PeriodicalIF":1.7,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645159","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}

{"title":"3D Simulations of Dynamic Resistance and Total Loss on HTS CORC Cables at Various Temperatures","authors":"Yukai Qiao;Nicholas M. Strickland;Zhenan Jiang","doi":"10.1109/TASC.2025.3544568","DOIUrl":"https://doi.org/10.1109/TASC.2025.3544568","url":null,"abstract":"Conductor on round core (CORC) cables carry a dc current under ac magnetic fields when applied onto the field windings of rotating machines, high-field magnets, and maglev systems. The resulting total loss, consisting of magnetization loss from external ac field and dynamic loss due to the interactions between the dc current and the ac field, will cause power dissipations in the cryogenic system. In this work, the dynamic resistance (<inline-formula><tex-math>$R_{text{dyn}}$</tex-math></inline-formula>) and total loss in a spiral tape and two CORC cables assembled with 4-mm wide REBCO coated conductors are numerically obtained under ac field amplitudes up to 500 mT and temperatures ranging from 30 K to 77.5 K, with dc current levels <italic>i</i> (<inline-formula><tex-math>$I_{text{dc}}$</tex-math></inline-formula>/<inline-formula><tex-math>$I_{c0}$</tex-math></inline-formula>) from 0.05 to 0.9 where <inline-formula><tex-math>$I_{text{dc}}$</tex-math></inline-formula> is the transport current value and <inline-formula><tex-math>$I_{c0}$</tex-math></inline-formula> is the self-field critical current at each temperature. Simulation results show the effective penetration field <inline-formula><tex-math>$B_{text{eff}}$</tex-math></inline-formula>, where the peaks of the normalized magnetization loss without current, <inline-formula><tex-math>$Q_{m,0}$</tex-math></inline-formula>/<inline-formula><tex-math>$B_{mathrm{m}^{2}}$</tex-math></inline-formula>, of the spiral tape, one-layer Cable A, and two-layer Cable B, shifts to a large value with decreasing temperatures due to the increase of critical currents. In addition, the threshold field <inline-formula><tex-math>$B_{text{th}}$</tex-math></inline-formula> together with the normalized <inline-formula><tex-math>$B_{text{th}}$</tex-math></inline-formula>/<inline-formula><tex-math>$I_{c0}$</tex-math></inline-formula> at three temperatures of the spiral tape and Cable A can be estimated using the equation for a superconducting strip, while that of values for Cable B are higher than the analytical curves due to the shielding effect. A finite dynamic loss <inline-formula><tex-math>$Q_{text{dyn}}$</tex-math></inline-formula> below <inline-formula><tex-math>$B_{text{th}}$</tex-math></inline-formula> for three models at all temperatures is observed and this is due to a nonzero electric field caused by flux creep. The total loss at higher fields increases as temperature decreases from 77.5 K to 30 K except for <italic>i</i> ≥ 0.5 at 77.5 K and <italic>i</i> = 0.9 at 50 K where the occurrence of flux flow loss leads to a surge in total loss.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 3","pages":"1-10"},"PeriodicalIF":1.7,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583254","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}