IEEE Transactions on Applied Superconductivity最新文献_第9页

Fabrication and Characterization of Al-Doped MgB2 Superconducting Bulks 掺铝MgB2超导块体的制备与表征

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-08-01 Epub Date: 2026-02-23 DOI: 10.1109/TASC.2026.3667120

Yingqing Wang;Daniel Wilkinson;Enzo Liotti;Barbara Shollock;Tayebeh Mousavi

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Investigation of AC Loss in an Impregnated 3-Parallel Strands HTS Coil for a Superconducting Armature of Electrical Machine for Aeronautics 航空电机超导电枢用浸渍三股并联高温超导线圈交流损耗的研究

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-08-01 Epub Date: 2026-02-12 DOI: 10.1109/TASC.2026.3664050

Arthur Jamois–Le Gouguec;Bruno Douine;Paul Gning;Jean Lévêque;Christophe Viguier

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Focus on Pinning Properties of RE-Ba-Cu-O Bulks and Tapes via Lift Factor Analysis 通过升力因子分析研究RE-Ba-Cu-O块材和带的钉接性能

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-08-01 Epub Date: 2026-03-30 DOI: 10.1109/TASC.2026.3678221

Ya Shi;Jiale Liu;Haoran Jiang;Dabin Wei;Kai Zhang;Yibing Zhang;Difan Zhou;Chuanbing Cai

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Effect of the Design on the Mechanical Properties of Internal-Tin Nb3Sn Superconducting Strand 设计对内锡Nb3Sn超导线力学性能的影响

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-08-01 Epub Date: 2026-03-03 DOI: 10.1109/TASC.2026.3669884

Yigong Shi;Qiang Guo;Hongchao Kou;Pengju Li;Chunguang Wang;Zheng Li;Guangyu Han;Bo Wu;Jianfeng Li;Xianghong Liu;Yong Feng;Pingxiang Zhang

{"title":"Effect of the Design on the Mechanical Properties of Internal-Tin Nb3Sn Superconducting Strand","authors":"Yigong Shi;Qiang Guo;Hongchao Kou;Pengju Li;Chunguang Wang;Zheng Li;Guangyu Han;Bo Wu;Jianfeng Li;Xianghong Liu;Yong Feng;Pingxiang Zhang","doi":"10.1109/TASC.2026.3669884","DOIUrl":"10.1109/TASC.2026.3669884","url":null,"abstract":"Compared with the bronze process, Nb3Sn strands prepared by the internal-tin (IT) process have higher Sn contents and can generate more Nb3Sn phases, making it the main method for preparing Nb3Sn strands with high critical current density. The Nb3Sn phase formed after heat treatment is a brittle intermetallic compound, and the filament damage and performance degradation under low-temperature and high-magnetic-field conditions need attention. During use, the compression and tensile strains on the strand can lead to performance attenuation. Therefore, it is important to study the relationship between performance degradation and the preparation process for the practical application of the strand. By optimizing the strand design and heat treatments, we prepared Nb3Sn strands with different mechanical properties. The critical current densities under different magnetic fields were tested. The internal local strain of the filaments was analyzed, and the relationship between heat treatments, and the mechanical properties of the strand were improved, enhancing its engineering application prospects.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"36 5","pages":"1-4"},"PeriodicalIF":1.8,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148488452","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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Thermal Insulation Performance of Multilayer Insulation Under Different Wrapping Conditions 多层保温层在不同包覆条件下的保温性能

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-08-01 Epub Date: 2026-03-11 DOI: 10.1109/TASC.2026.3690164

Hirofumi Watanabe;Makoto Otsuka;Hiroaki Kobayashi;Koshi Kato;Toya Kobayashi;Takaya Shiomi;Masae Kanda;Sataro Yamaguchi

{"title":"Thermal Insulation Performance of Multilayer Insulation Under Different Wrapping Conditions","authors":"Hirofumi Watanabe;Makoto Otsuka;Hiroaki Kobayashi;Koshi Kato;Toya Kobayashi;Takaya Shiomi;Masae Kanda;Sataro Yamaguchi","doi":"10.1109/TASC.2026.3690164","DOIUrl":"10.1109/TASC.2026.3690164","url":null,"abstract":"Thermal insulation performance of three different multilayer insulation (MLI) wrapping methods was investigated using a vertical guarded boil-off calorimeter to determine the method that minimizes both the heat leak and the wrapping effort for cryogenic pipes used in superconducting power transmission. The wrapping methods are termed the Swiss-roll type, alternating-seam type, and blanket type. In the Swiss-roll type, a single MLI film is rolled continuously around the liquid nitrogen tank in the calorimeter from the room-temperature side to the cryogenic-temperature side. In the alternating-seam type, MLI films are wrapped layer by layer around the tank, while their seams are placed alternately on opposite sides of the tank. In the blanket type, MLI films are stacked to form a single blanket, which is then wrapped around the tank. Heat leak measurements for these methods indicate that the Swiss-roll type is the most effective, considering both thermal insulation performance and workability. For the Swiss-roll type, the dependence of heat leak on wrapping strength was also investigated using a horizontal guarded boil-off calorimeter by varying the circumferential length of the MLI. The results reveal that as the wrapping became looser, the heat leak decreased significantly until a certain wrapping strength, at which a space clearly formed beneath the tank, was reached. Beyond this wrapping strength, the heat leak remained nearly constant. These findings show that an optimum wrapping strength, which minimizes both the heat leak and wrapping effort, exists in the Swiss-roll type method.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"36 5","pages":"7700605-7700605"},"PeriodicalIF":1.8,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148488634","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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Study on Mitigation of OCR Malfunction Due to SFCL in Power Distribution System With DER 带DER的配电系统SFCL OCR故障的缓解研究

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-08-01 Epub Date: 2026-03-20 DOI: 10.1109/TASC.2026.3676033

Yoo-Jung Cho;Sung-Hun Lim

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Critical Current and Magnetization Scaling of Nb3Sn Wires: Measurements and Simulations from Exact Wire Geometries Nb3Sn导线的临界电流和磁化尺度：精确导线几何形状的测量和模拟

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-08-01 Epub Date: 2026-03-16 DOI: 10.1109/TASC.2026.3674540

Josef Baumann;Simon C. Hopkins;Julien Dular;Fredrik Magnus;Mariusz Wozniak;Jeroen D. Bijlsma;Bentejui Medina-Clavijo;Thierry Boutboul

{"title":"Critical Current and Magnetization Scaling of Nb3Sn Wires: Measurements and Simulations from Exact Wire Geometries","authors":"Josef Baumann;Simon C. Hopkins;Julien Dular;Fredrik Magnus;Mariusz Wozniak;Jeroen D. Bijlsma;Bentejui Medina-Clavijo;Thierry Boutboul","doi":"10.1109/TASC.2026.3674540","DOIUrl":"10.1109/TASC.2026.3674540","url":null,"abstract":"In the context of the High Field Magnet (HFM) program, 14 T dipole magnets are under development towards requirements for a proposed Future Circular Collider (FCC-hh). For evaluation of operating margins, a reliable critical current density scaling, <italic>Jc(<italic>B,<italic>T), is required up to 18 T and for 1.9–10 K; whilst AC loss calculations for designing cooling and quench protection schemes require this to be extended down to an injection field of ∼1 T or below at the operating temperature. Scaling laws for Nb3Sn wires have been extensively studied in the literature. However, for practical high <italic>Ic wires, it is rarely possible to access this full temperature and field range in measurements with a transport current, and a variety of procedural methodologies have been proposed to address divergences between transport and magnetization measurements. In this study, a recently-developed Coupled Axial and Transverse Currents (CATI) finite element method is applied for modeling the electrical and magnetic behavior of the RRP Nb3Sn wire used for HL-LHC MQXF magnets, incorporating its exact twisted composite geometry as parameterized by image analysis. Fitting parameters for the <italic>Jc(<italic>B,<italic>T) of the superconductor are found to simultaneously match transport <italic>Ic (6–15 T, 1.9 K and 4.3 K) and magnetization (0–10 T, 1.9–16 K), and the assumptions required are discussed. The model is then used to explore the validity of common procedures applied to experimental data, including self-field correction and procedural fitting approaches.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"36 5","pages":"1-9"},"PeriodicalIF":1.8,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11435536","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148489809","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}

引用次数: 0

Effect of Axial Strain for Newly Designed High Current Density Nb3Sn Wires With Distributed Barrier Strands (DBS) 新型分布势垒股高电流密度Nb3Sn导线轴向应变的影响

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-08-01 Epub Date: 2026-02-13 DOI: 10.1109/TASC.2026.3664817

Sanghyeun Je;Youngkyoung Kim;Shinhye Na;Yangjin Jung;Heonhwan Kim;Soo-Hyeon Park;Hyun Jung Lee;Hyun Wook Kim;Keeman Kim

{"title":"Effect of Axial Strain for Newly Designed High Current Density Nb3Sn Wires With Distributed Barrier Strands (DBS)","authors":"Sanghyeun Je;Youngkyoung Kim;Shinhye Na;Yangjin Jung;Heonhwan Kim;Soo-Hyeon Park;Hyun Jung Lee;Hyun Wook Kim;Keeman Kim","doi":"10.1109/TASC.2026.3664817","DOIUrl":"10.1109/TASC.2026.3664817","url":null,"abstract":"Superconducting wires are essential materials for the future energy industries and fundamental scientific researches. As the demand for high energy productions and advanced researches continues to grow, the required superconducting wires need to have a higher performance. Kiswire Advanced Technology Co., Ltd. developed a Distributed Barrier Strands (DBS) Nb3Sn wire with high critical current density (Jc) and the wire is under mass production for the manufacturing of the superconducting magnets in Superconducting Conductor Experiment (SUCCEX) facility, a 16 Tesla superconducting conductor test facility, which is being developed by the Korea Institute of Energy Technology (KENTECH) Kim et al. 2025. The DBS wire is designed to facilitate the efficient diffusion of Ti content by incorporating a distributed diffusion barrier and placing Sn content within the sub-elements in a manner similar to the Distributed Tin (DT) structure. This design effectively reduces the bridging between Nb filaments and unreacted Nb, leading to significant improvements in electrical performance and measurement stability compared to the DT design. In this study, we focused on evaluating the strain effect on the wire to examine how the wire design influences the degradation of electrical properties and to analyze the scaling coefficient.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"36 5","pages":"1-4"},"PeriodicalIF":1.8,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148490969","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

Grasp and Prediction of Joint Resistivity in Sonic-Welding Process of REBCO Coated Conductors Based on Limited Numbers of Experimental Data 基于有限实验数据的REBCO涂层导体声焊过程中接头电阻率的把握与预测

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-08-01 Epub Date: 2026-02-23 DOI: 10.1109/TASC.2026.3665175

Shinya Sera;Takanobu Kiss;Zeyu Wu;Kenji Suzuki;Kohei Higashikawa

{"title":"Grasp and Prediction of Joint Resistivity in Sonic-Welding Process of REBCO Coated Conductors Based on Limited Numbers of Experimental Data","authors":"Shinya Sera;Takanobu Kiss;Zeyu Wu;Kenji Suzuki;Kohei Higashikawa","doi":"10.1109/TASC.2026.3665175","DOIUrl":"10.1109/TASC.2026.3665175","url":null,"abstract":"A data-efficient analytical approach was developed to quantitatively predict and control the joint resistivity in sonic-welded REBCO coated conductors. By employing the proposed Acoustic Energy Activation Bonding (AEAB) model, which describes an exponential dependence of bonding probability on the input acoustic energy, the AEAB model successfully reproduced the experimental data within approximately ±22% relative deviation. Even when only five distinct process conditions were used, the model achieved reasonably accurate prediction of joint resistivity (12.1 ± 2.1 nΩcm2) and identified optimal conditions realizing 9.8 nΩcm2 without degradation. This suggests that, unlike conventional empirical methods requiring extensive trials, the present approach provides a data-efficient framework for controlling joint resistivity from a limited dataset. The model was further applied to MOCVD-processed tapes, confirming its consistency and general applicability across different types.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"36 5","pages":"1-5"},"PeriodicalIF":1.8,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11407495","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148491182","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}

引用次数: 0

Machine Learning-Based Detection and Analysis of Current Blocking Local Obstacles in REBCO Coated Conductors Obtained from Different Manufacturing Processes 基于机器学习的不同制造工艺REBCO涂层导体电流阻塞局部障碍检测与分析

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-08-01 Epub Date: 2026-02-04 DOI: 10.1109/TASC.2026.3661485

Zeyu Wu;Kohei Higashikawa;Kazutaka Imamura;Takanobu Kiss

{"title":"Machine Learning-Based Detection and Analysis of Current Blocking Local Obstacles in REBCO Coated Conductors Obtained from Different Manufacturing Processes","authors":"Zeyu Wu;Kohei Higashikawa;Kazutaka Imamura;Takanobu Kiss","doi":"10.1109/TASC.2026.3661485","DOIUrl":"10.1109/TASC.2026.3661485","url":null,"abstract":"In this study, we successfully developed a method to analyze spatial inhomogeneity in long-length REBCO coated conductors (CCs) manufactured by different processes, by combining reel-to-reel scanning Hall-probe microscopy (RTR-SHPM) with a machine learning-based object detection algorithm. Spatial homogeneity of REBCO CCs is crucial for their practical applications. In this study, we employed RTR-SHPM to visualize two-dimensional (2-D) sheet current density (<italic>Js) maps and introduced a machine learning approach to detect local current blocking obstacles in long-length CCs fabricated via different manufacturing processes, including pulsed laser deposition (PLD), reactive co-evaporation by deposition and reaction (RCE-DR), and metal-organic chemical vapor deposition (MOCVD). The object detection model was trained using <italic>Js maps containing local obstacles from different processes. As a result, the Intersection over Union (IoU) reached 73%, and obstacles were successfully detected with a high F1-score of 89.8%, along with information on their associated manufacturing processes. These results indicate that obstacles features vary depending on the deposition method of the REBCO layers, and our approach shows strong potential to analyze local inhomogeneity independently of the critical current (<italic>Ic) value in long-length CCs.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"36 5","pages":"1-5"},"PeriodicalIF":1.8,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11372602","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148492184","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}

引用次数: 0