IEEE Transactions on Applied Superconductivity最新文献_第7页

Persistent Current Simulation for CCT Testing Magnet Used in EIC

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-14 DOI: 10.1109/TASC.2025.3529420

Ye Bai;Holger Witte;Peng Xu;Mithlesh Kumar;Sara Notaro

{"title":"Persistent Current Simulation for CCT Testing Magnet Used in EIC","authors":"Ye Bai;Holger Witte;Peng Xu;Mithlesh Kumar;Sara Notaro","doi":"10.1109/TASC.2025.3529420","DOIUrl":"https://doi.org/10.1109/TASC.2025.3529420","url":null,"abstract":"The Electron-Ion Collider (EIC), a powerful new facility to be built in the United States at the U.S. Department of Energy's Brookhaven National Laboratory in collaboration with Thomas Jefferson National Accelerator Facility, will explore the most fundamental building blocks of nearly all visible matter. There are many different types of superconducting magnets near the interaction region (IR) of EIC. Due to space constraints and special lattice requirements, Tapered CCT (canted-cosine theta) magnets have been used for EIC. At beam injection, the magnetic field is only ∼5.5% of the maximum operating field. Considerable field errors will be generated from persistent current in superconducting strands even using very fine filament for those superconductors.A tapered CCT demonstrator magnet has been built and tested successfully at BNL since July 2020 to evaluate the key technologies for future tapered CCT magnets. In October 2023, BNL team also measured the persistent current in this demonstrator magnet. To validate the persistent current simulation methods for CCT magnets in EIC, this paper used a full 3D Opera Model and measured magnetization data from superconducting strand for the simulation. Simulation results showed reasonable agreement with recent measurement results.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-4"},"PeriodicalIF":1.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143369966","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 of Screening Current Effects in a Hybrid Nb$_{3}$Sn/REBCO Superconducting Accelerator Magnet Using a T-A Formulation

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-13 DOI: 10.1109/TASC.2025.3528378

Ye Yang;Yufan Yan;Febin Kurian;Mukesh Dhakarwal;Masami Iio;Kento Suzuki;Xiaorong Wang;Ramesh Gupta;Toru Ogitsu;Tengming Shen

{"title":"Analysis of Screening Current Effects in a Hybrid Nb$_{3}$Sn/REBCO Superconducting Accelerator Magnet Using a T-A Formulation","authors":"Ye Yang;Yufan Yan;Febin Kurian;Mukesh Dhakarwal;Masami Iio;Kento Suzuki;Xiaorong Wang;Ramesh Gupta;Toru Ogitsu;Tengming Shen","doi":"10.1109/TASC.2025.3528378","DOIUrl":"https://doi.org/10.1109/TASC.2025.3528378","url":null,"abstract":"To explore the feasibility of using high-temperature superconducting (HTS) REBCO coated conductors in future accelerator magnets, two REBCO flat racetrack coils were fabricated using 4-mm wide EuBCO tapes at the High Energy Accelerator Research Organization (KEK). These coils were tested as an insert inside a Nb<inline-formula><tex-math>$_{3}$</tex-math></inline-formula>Sn common-coil dipole magnet, which provides a background field of up to <inline-formula><tex-math>$sim$</tex-math></inline-formula> 9.5T, at the Brookhaven National Laboratory (BNL). REBCO tapes offer exceptionally high critical current density under strong magnetic fields; however, they also exhibit significant magnetization due to screening currents, leading to magnetic field errors. This study presents a 2D finite element model of screening current-induced fields (SCIF) in REBCO coils using the <italic>T-<italic>A formulation, along with the results obtained. Simulations were then performed for two KEK test cases: one where the REBCO conductors were oriented with the HTS tapes parallel to the background field, and another where the tapes were perpendicular to it. Since screening currents also influence the stress distribution and increase the peak stress in the coils, the mechanical effects of these currents were analyzed. The implications of these simulation and test results for the design of Nb<inline-formula><tex-math>$_{3}$</tex-math></inline-formula>Sn/REBCO superconducting accelerator magnets are discussed.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143183929","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 a Submarine 30-km $text{MgB}_{2}$ Cable for the Combined Transfer of 0.3 $text{GW}_text{e}$ and $text{LH}_{2}$ from Offshore Plants to the Ravenna Port

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-13 DOI: 10.1109/TASC.2025.3528923

Michela Bracco;Alessandro Balbo;Christian-Erik Bruzek;Marco Breschi;Lorenzo Cavallucci;Stefania Farinon;Antonio Macchiagodena;Giovanni Mangiulli;Riccardo Musenich;Luca Soldati;Laura Savoldi

{"title":"Design of a Submarine 30-km $text{MgB}_{2}$ Cable for the Combined Transfer of 0.3 $text{GW}_text{e}$ and $text{LH}_{2}$ from Offshore Plants to the Ravenna Port","authors":"Michela Bracco;Alessandro Balbo;Christian-Erik Bruzek;Marco Breschi;Lorenzo Cavallucci;Stefania Farinon;Antonio Macchiagodena;Giovanni Mangiulli;Riccardo Musenich;Luca Soldati;Laura Savoldi","doi":"10.1109/TASC.2025.3528923","DOIUrl":"https://doi.org/10.1109/TASC.2025.3528923","url":null,"abstract":"A submarine, hybrid cable for the simultaneous transfer of green electricity and Liquid Hydrogen (<inline-formula><tex-math>$text{LH}_{2}$</tex-math></inline-formula>) in a 30 km-long pipeline from an offshore renewable power plant, in the Adriatic Sea is presented here. The superconducting (SC) cable is designed with <inline-formula><tex-math>$text{MgB}_{2}$</tex-math></inline-formula> strands to carry the transport current with a significant margin. The SC strands are twisted around a bundle of normal conducting strands with the function of protecting against overcurrents and ensuring at the same time flexibility of the cable. The SC cable, covered by multiple layers of cold dielectric, is inserted into a corrugated pipe, constituting the inner part of a cryostat where <inline-formula><tex-math>$text{LH}_{2}$</tex-math></inline-formula> flows. <inline-formula><tex-math>$text{LH}_{2}$</tex-math></inline-formula> has the dual function of cryogen and energy carrier. The outer part of the cryostat is designed to limit the heat load to less than 2 W/m, and to withstand the pressure in operation due to the submarine installation at a maximum depth of ∼ 50 m.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-6"},"PeriodicalIF":1.7,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143360955","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

Challenges and Perspectives of the Superconducting Magnets for the Muon Collider Storage Ring

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-13 DOI: 10.1109/TASC.2025.3529424

Barbara Caiffi;Luca Alfonso;Andrea Bersani;Luca Bottura;Stefania Farinon;Andrea Gagno;Filippo Levi;Francesco Mariani;Samuele Mariotto;Riccardo Musenich;Daniel Novelli;Alessandra Pampaloni;Tiina Salmi;on behalf of IMCC

{"title":"Challenges and Perspectives of the Superconducting Magnets for the Muon Collider Storage Ring","authors":"Barbara Caiffi;Luca Alfonso;Andrea Bersani;Luca Bottura;Stefania Farinon;Andrea Gagno;Filippo Levi;Francesco Mariani;Samuele Mariotto;Riccardo Musenich;Daniel Novelli;Alessandra Pampaloni;Tiina Salmi;on behalf of IMCC","doi":"10.1109/TASC.2025.3529424","DOIUrl":"https://doi.org/10.1109/TASC.2025.3529424","url":null,"abstract":"The International Muon Collider Collaboration (IMCC) has been formed with the aim of delivering a feasibility study on a Muon Collider facility, as recommended by the European Strategy for Particle Physics and supported by the European Union through the Grant Agreement 101094300. Such facility would allow to study frontier physics with a 10 km collider ring and a muon center of mass energy of 10 TeV. Several technical challenges arise due to the short rest lifetime of these particles (2.2 <inline-formula><tex-math>$mu$</tex-math></inline-formula>s), necessitating the use of cutting-edge technology for all components, particularly the superconducting magnets. In this contribution, we present the main challenges of such magnets, focusing on the performance limits of the available technology and the possible design choices. The LTS (Low Temperature Superconductor) materials Nb-Ti and Nb<inline-formula><tex-math>$_{3}$</tex-math></inline-formula>Sn and the ReBCO HTS (High Temperature Superconductor) are analysed, comparing costs, mechanical structure feasibility and ease of protection from quench, taking into account also the sustainability of the cooling and the compatibility with the beam dynamics constraints. Furthermore, preliminary designs of arc dipoles in cos<inline-formula><tex-math>$theta$</tex-math></inline-formula> coil and block coil configurations is discussed, focusing on the maximum achievable bore field, the stress induced by the electromagnetic forces and the AC losses due to magnetization.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-7"},"PeriodicalIF":1.7,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143369942","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

A Finite Element $a$-$h$-Formulation for the Reduced Order Hysteretic Magnetization Model for Composite Superconductors

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-13 DOI: 10.1109/TASC.2025.3528310

Julien Dular;Arjan Verweij;Mariusz Wozniak

{"title":"A Finite Element $a$-$h$-Formulation for the Reduced Order Hysteretic Magnetization Model for Composite Superconductors","authors":"Julien Dular;Arjan Verweij;Mariusz Wozniak","doi":"10.1109/TASC.2025.3528310","DOIUrl":"https://doi.org/10.1109/TASC.2025.3528310","url":null,"abstract":"The simulation of transient effects in large-scale superconducting systems with the finite element method is computationally expensive. A Reduced Order Hysteretic Magnetization (ROHM) model has been recently proposed for the computation of the magnetization and loss of composite superconductors. It accounts for the interplay between hysteresis, eddy, and coupling effects, without a need to model the detailed current density distribution, leading to a substantial reduction of simulation time. The ROHM model naturally fits in finite element formulations written in terms of the magnetic field such as the <inline-formula><tex-math>$h$</tex-math></inline-formula>-<inline-formula><tex-math>$phi$</tex-math></inline-formula>- or <inline-formula><tex-math>$phi$</tex-math></inline-formula>-formulation, but these formulations are not always the optimal choice. For example, in the presence of ferromagnetic materials, one may prefer formulations written in terms of the magnetic flux density. In this context, we introduce in this paper a mixed <inline-formula><tex-math>$a$</tex-math></inline-formula>-<inline-formula><tex-math>$h$</tex-math></inline-formula>-formulation that implements the ROHM model. The main advantage of this formulation is the direct use of the constitutive relation defined by the ROHM model, without the need for its inversion. We discuss the computational efficiency of the new formulation compared to a conventional <inline-formula><tex-math>$phi$</tex-math></inline-formula>-formulation, based on a model of a composite superconducting strand.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10839043","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143183949","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

Coated Conductor Development of Thick Y–Gd–Ba–Cu–O Layer With Heavy Ba–Zr–O Doping Using a Reel-to-Reel System Furnace

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-13 DOI: 10.1109/TASC.2025.3528312

Michio Sato;T. Oyamada;K. Shiohara;Y. Takahashi;Y. Aoki;K. Adachi;K. Nakaoka;T. Izumi

{"title":"Coated Conductor Development of Thick Y–Gd–Ba–Cu–O Layer With Heavy Ba–Zr–O Doping Using a Reel-to-Reel System Furnace","authors":"Michio Sato;T. Oyamada;K. Shiohara;Y. Takahashi;Y. Aoki;K. Adachi;K. Nakaoka;T. Izumi","doi":"10.1109/TASC.2025.3528312","DOIUrl":"https://doi.org/10.1109/TASC.2025.3528312","url":null,"abstract":"We fabricated uniform long-length Y–Gd–Ba–Cu–O coated conductors with 10 mol% <inline-formula><tex-math>$text{BaZrO}_{3}$</tex-math></inline-formula> (BZO) nanoparticles (YGd10BZO CCs) in batch and reel-to-reel (RTR) furnaces. The standard deviations of the self-field critical currents (<inline-formula><tex-math>$I_text{c}$</tex-math></inline-formula>) in the batch- and RTR-fabricated YGd10BZO CCs were 22.8% and 3.2%, respectively, indicating that the RTR furnace is more suitable for stable production of long-length CCs than the batch furnace. To further improve the in-field <inline-formula><tex-math>$I_text{c}$</tex-math></inline-formula>, we fabricated heavily doped (15 mol%) BZO and thick (3.0 μm) YGd15BZO CCs in the RTR system furnace. The in-field <inline-formula><tex-math>$I_text{c}$</tex-math></inline-formula> of the CCs was 21.7 A/4-mm-width at 77 K and 3 T (<italic>B||<italic>c). This study demonstrates that thick YGd15BZO CCs can be fabricated without deteriorating their pinning properties.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143184239","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

Additional Pinning Effect by Heavy-Ion Irradiation in Coated Conductors with Artificial Pinning Centers

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-10 DOI: 10.1109/TASC.2025.3527941

Tetsuro Sueyoshi;Toshinori Ozaki;Satoshi Semboshi;Hitoshi Sakane;Terukazu Nishizaki;Norito Ishikawa

{"title":"Additional Pinning Effect by Heavy-Ion Irradiation in Coated Conductors with Artificial Pinning Centers","authors":"Tetsuro Sueyoshi;Toshinori Ozaki;Satoshi Semboshi;Hitoshi Sakane;Terukazu Nishizaki;Norito Ishikawa","doi":"10.1109/TASC.2025.3527941","DOIUrl":"https://doi.org/10.1109/TASC.2025.3527941","url":null,"abstract":"We investigated additional pinning effect on in-field <italic>Jc properties of coated conductors including Y2O3 nano-particles as artificial pinning centers (APCs), where three types of heavy-ion beams were employed with the fluence of 4.84 × 1010 to 7.26 × 1011 ions/cm2. The addition of the irradiation defects enhanced the in-field <italic>Jc. Furthermore, more upward shift in the <italic>Jc was observed for the introduction of the defects with larger volume of the irradiation damage, not only in high magnetic fields but also in low magnetic fields. One factor of the irradiation effect is that the self-field <italic>Jc and the critical temperature <italic>Tc are relatively insensitive to the addition of the irradiation defects for the samples with APCs. Another is the glassy flux creep behavior over wide temperature region, suggesting that flux pinning by the combination of APCs and irradiation defects is strong against thermal fluctuation.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143184079","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

Temperature-Dependent Trapped Magnetic Fields for REBa2Cu3Oy (RE : Y, Dy) Melt-Textured Bulks Prepared Using the Single-Direction Melt Growth Method

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-10 DOI: 10.1109/TASC.2025.3527944

Takanori Motoki;Toshiteru Kii;Jun-ichi Shimoyama

引用次数: 0

AC Loss Characteristics of High-Temperature Superconducting Tapes Under Over-Current Conditions

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-10 DOI: 10.1109/TASC.2025.3527945

Jun Ogawas;Satoshi Fukui;Arakawa Ryota;Tomohiro Nabeya;Yuto Yamada

{"title":"AC Loss Characteristics of High-Temperature Superconducting Tapes Under Over-Current Conditions","authors":"Jun Ogawas;Satoshi Fukui;Arakawa Ryota;Tomohiro Nabeya;Yuto Yamada","doi":"10.1109/TASC.2025.3527945","DOIUrl":"https://doi.org/10.1109/TASC.2025.3527945","url":null,"abstract":"The transport current of high-temperature superconducting tapes depends on the critical current value. The upper limit of the transport current is determined by the ratio of the load to the critical current value. In general, direct current must not be regularly energized above the critical current. However, unforeseen events or accidents may result in instantaneous over-currents. This test could be conducted under sufficient cooling; however, the temperature increase causes the critical current value to decrease. Consequently, the loss increases rapidly, resulting in superconducting tape burning out. Conversely, burnout can be prevented under sufficient cooling. This study aimed to investigate the alternating current (AC) loss characteristics by experimentally applying AC above the critical current value of high-temperature superconducting tapes. ReBCO tapes with varying protective layer thicknesses and Bi2223/Ag tapes with different critical current values were subjected to immersion cooling in liquid nitrogen. The four-terminal method was employed to measure the flow of AC above the critical current value. Based on the findings, with adequate cooling, high-temperature superconducting tapes were stably energized even beyond the critical current value.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-4"},"PeriodicalIF":1.7,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143183917","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

Modeling of Quench in a Slotted Core HTS Cable for Compact Fusion Reactors

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-10 DOI: 10.1109/TASC.2025.3527955

Lorenzo Cavallucci;Gabriele Colombo;Gianluca De Marzi;Antonio Trotta;Fabio Zanon;Marco Breschi

引用次数: 0