IEEE Transactions on Applied Superconductivity最新文献_第8页

Analytical Estimation of Quench Protection Limits in Insulated, Non-Insulated, and Metal-Insulated ReBCO Accelerator Dipoles and Quadrupoles

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-02-17 DOI: 10.1109/TASC.2025.3540791

Tiina Salmi;Andrea Bersani;Luca Bottura;Barbara Caiffi;Stefania Farinon;Samuele Mariotto;Daniel Novelli

{"title":"Analytical Estimation of Quench Protection Limits in Insulated, Non-Insulated, and Metal-Insulated ReBCO Accelerator Dipoles and Quadrupoles","authors":"Tiina Salmi;Andrea Bersani;Luca Bottura;Barbara Caiffi;Stefania Farinon;Samuele Mariotto;Daniel Novelli","doi":"10.1109/TASC.2025.3540791","DOIUrl":"https://doi.org/10.1109/TASC.2025.3540791","url":null,"abstract":"Future particle accelerators require high-field dipole and quadrupole magnets to guide the particles inside the collider ring. Magnets based on High-Temperature Superconductors (HTS) allow operation with higher magnetic field and higher operation temperature compared with the Low-Temperature Superconductor (LTS) based options. One of the issues presently limiting the HTS technology seems to be their protection in case of an unwanted resistive transition, i.e., a quench. New magnet technologies based on non-insulated or partially insulated (metal-insulated) winding technologies ease the problem compared with traditionally insulated magnets. In these magnets, the current can by-bass the quenched segment and the peak temperature remains lower. However, in high current density and high energy density operation, also the insulation-free options will have limitations, and the quench temperatures should be analyzed. In this contribution we present a method for analytical estimation of the protection limits in insulated, non-insulated and metal-insulated magnets. The equations can be used in early stages of magnet design to assess the feasibility and performance requirements of the eventual protection systems. The work stems from the International Muon Collider Collaboration and the results shown here review the protection limits in the dipoles and quadrupoles considered in its collider ring design. We discuss how parameters such as the coil size, metal insulation thickness and the amount of stabilizer copper in the tape impact the protectability of the magnet. This analysis considers only an adiabatic estimation of the peak temperature. Other potentially critical aspects such as voltages and mechanical stresses must be considered with more detailed models as the magnet designs mature.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10891257","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553480","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

Electromagnetic-Thermal Analysis of an HTS Linear Motor for High-Dynamic Applications 用于高动态应用的 HTS 线性电动机的电磁-热分析

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-02-17 DOI: 10.1109/TASC.2025.3542342

A. Desikan;B. J. H. de Bruyn;D. C. J. Krop;E. A. Lomonova

{"title":"Electromagnetic-Thermal Analysis of an HTS Linear Motor for High-Dynamic Applications","authors":"A. Desikan;B. J. H. de Bruyn;D. C. J. Krop;E. A. Lomonova","doi":"10.1109/TASC.2025.3542342","DOIUrl":"https://doi.org/10.1109/TASC.2025.3542342","url":null,"abstract":"This article presents and applies an electromagnetic-thermal model to design a double-sided coreless, conduction-cooled high temperature-superconductor (HTS) linear motor for a high-dynamic motion application, and assesses the thermal stability of the superconducting coils for continuous long term operation. The analysed motor topology contains stationary DC operated superconducting coils and conventional three-phase AC commutated mover-coils. The stator is a vacuum chamber which houses a cryogenic assembly containing the superconducting coils. The framework utilizes three computationally efficient models: a two-dimensional finite-element-method (2D FEM) model to evaluate the feasibility of superconducting coils under static conditions, a semi-analytical model to compute the motor thrust and eddy-current losses in electrically conductive structures of the cryostat during dynamic motion, and a 2D FEM full-scale model of the linear motor for overall loss calculation in the stator. The motor design, optimized for minimum volume, and an operating temperature of 20 K, produces a peak magnetic flux density of 5.43 T in the air gap in static conditions which results in a force density of 4700 kN/m3. Results show that steady-state temperature in the superconducting coils does not exceed 25 K. As such, the dynamic losses do not result in quenching of superconducting coils. This paper shows that a reliable operation of superconducting coils during high-dynamic motion condition is feasible.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-9"},"PeriodicalIF":1.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570686","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

On the Evaluation of Current Sharing Temperature Within Conductors of ITER Toroidal Field Coils in Operation

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-02-17 DOI: 10.1109/TASC.2025.3532237

A. Louzguiti;P. Bauer;M. Breschi;L. Cavallucci;E. Gillard;C. Hoa;J. Li;A. Torre;V. Tronza

{"title":"On the Evaluation of Current Sharing Temperature Within Conductors of ITER Toroidal Field Coils in Operation","authors":"A. Louzguiti;P. Bauer;M. Breschi;L. Cavallucci;E. Gillard;C. Hoa;J. Li;A. Torre;V. Tronza","doi":"10.1109/TASC.2025.3532237","DOIUrl":"https://doi.org/10.1109/TASC.2025.3532237","url":null,"abstract":"The nineteen ITER Toroidal Field (TF) coils (including a spare one) consists of seven double pancakes (DP) of cable-in-conduit conductors (CICC), each containing 900 superconducting Nb3Sn strands. In total eight strand manufacturing companies were involved, either relying on the bronze route or internal tin process. As a result, the strand, and thus conductor, performance can vary significantly within the same TF coil. This peculiarity inherent to the ITER project makes the evaluation process of coils stability, linked to the current sharing temperature (Tcs), more delicate. Following an extensive conductor testing campaign carried out over several years within the SULTAN facility, degradation of the different TF conductors was observed along electromagnetic and thermal cycling. Relying on the ITER critical current scaling law and associated parameters for TF strands, effective strain properties and n-values were extracted from the SULTAN Tcs measurements. In parallel, recent simulations conducted with MULTIFIL (mechanical code) on TF CICC have shed some light on the strands mechanical state after cool-down and along electro-magnetic cycling, highlighting the importance of the bending strain. Capitalizing on these results, on the SULTAN database, and on the literature (already mentioning the bending strain effect on conductor degradation), we aim at refining the existing methodology of performance scale-up from strands to conductors by introducing the bending strain. Ultimately, we apply the model in an attempt to conciliate SULTAN Tcs measurements and MULTIFIL mechanical results.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465802","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

Quench Modeling of the GaToroid Demonstrator Magnet for Hadron Therapy

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-02-17 DOI: 10.1109/TASC.2025.3542352

Luca Soldati;Marco Breschi;Ariel Haziot;Gerard Willering;Gianluca Vernassa;Luca Bottura

引用次数: 0

Racetrack-Shaped HTS Coils With Metal-as-Insulation: Transient Behavior Model and Experimental Validation Status

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-02-17 DOI: 10.1109/TASC.2025.3542344

Audren Blondelle;Emeric Benoist;Antomne Caunes;Philippe Fazilleau;Clément Genot;Gilles Lenoir;Thibault Lécrevisse;Pascal Tixador

{"title":"Racetrack-Shaped HTS Coils With Metal-as-Insulation: Transient Behavior Model and Experimental Validation Status","authors":"Audren Blondelle;Emeric Benoist;Antomne Caunes;Philippe Fazilleau;Clément Genot;Gilles Lenoir;Thibault Lécrevisse;Pascal Tixador","doi":"10.1109/TASC.2025.3542344","DOIUrl":"https://doi.org/10.1109/TASC.2025.3542344","url":null,"abstract":"High Temperature Superconductors (HTS) offer significant potential for very high field application, thanks to their high current density. However, the high thermal stability make the protection of such magnets challenging. This is why CEA is exploring the use of specific No-insulation (NI) technology — and more precisely Metal-as-Insulation (MI) technology — to implement a protection layer within the design phase. The transient behavior of the REBCO combined with this NI or MI technology needs to be quantified at high magnetic fields to ensure the effectiveness of the protection. Following this goal, a dedicated Partial Element Equivalent Circuit (PEEC) model has been developed for several years at CEA and has been updated recently with the addition of racetrack shaped coils. Our PEEC model allows us to simulate multiples racetrack-shaped coils with different parameters such as power supply current, voltage limitation, local degradation, heaters, and external magnetic fields. To validate this model, we built coils samples. The dimensions of the samples were thoroughly chosen to allow meaningful comparison with the model. Preliminary tests have been performed in a liquid nitrogen bath (77 K) and in self-field configuration. Moreover, to validate the behavior of the coils when a local degradation is applied, it is required to control this defect accurately. Therefore, we also conducted an experimental study to control the size and level of degradation we apply on the tape. These data enable us to provide precise inputs for our numerical simulations.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-7"},"PeriodicalIF":1.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601918","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 and Short-Circuit Analysis of a 1 MW Superconducting Generator for Electric Aircraft

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-02-17 DOI: 10.1109/TASC.2025.3542339

Yihan Wang;Yuwei Liu;Linjie Zhou;Qi Yuan;Xiaowei Song;Liang Li;Qiuliang Wang

{"title":"Design and Short-Circuit Analysis of a 1 MW Superconducting Generator for Electric Aircraft","authors":"Yihan Wang;Yuwei Liu;Linjie Zhou;Qi Yuan;Xiaowei Song;Liang Li;Qiuliang Wang","doi":"10.1109/TASC.2025.3542339","DOIUrl":"https://doi.org/10.1109/TASC.2025.3542339","url":null,"abstract":"High temperature superconducting (HTS) synchronous machines hold significant potential for future electric propulsion systems in aircraft. HTS machines feature larger electromagnetic airgap and smaller reactance than their conventional counterparts, resulting in higher fault currents and instantaneous AC losses in HTS field windings during sudden short circuits at machine terminals. This paper first presents a multi-objective optimization process for a 1 MW, 6000 rpm HTS synchronous generator and compares the performance with and without a rotor back iron. Second, a finite element (FE) model, which couples rotating dynamics, external circuits, and an HTS numerical method based on the <italic>T-<italic>A formulation, is developed to simulate the characteristics of four short circuit events. The current and AC losses in the HTS field winding under each short-circuit scenario are examined. Based on the results, the design and optimization of an electromagnetic (EM) shield are also discussed. The findings show that the machine with a non-magnetic rotor back iron has higher power density and efficiency. By examining the effect of the rotor EM shield thickness on the field winding's ripple current and the eddy current loss, we found that a 3 mm copper shield is an optimal choice.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621931","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 Multi-Stage FPGA-Based Instrumentation Platform for Characterization and Signal Integrity Testing of Superconducting Interconnects at Cryogenic Temperatures

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-02-14 DOI: 10.1109/TASC.2025.3542338

Christopher J. Lewis;Keith Krause;Archit Shah;John A. Sellers;Michael C. Hamilton

引用次数: 0

Status of High-Field Rutherford Cable Production for the HL-LHC Project

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-02-14 DOI: 10.1109/TASC.2025.3541616

J. Fleiter;A. Bonasia;S. C. Hopkins;T. Boutboul;A. Ballarino

引用次数: 0

EMI Susceptibility of a Differential Time-Division SQUID Multiplexing Circuit for TES Readout

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-02-13 DOI: 10.1109/TASC.2025.3534173

Malcolm Durkin;Douglas Bennett;William B. Doriese;Johnathon D. Gard;Johannes Hubmayr;Richard Lew;Erin Maloney;Carl D. Reintsema;Robinjeet Singh;Daniel R. Schmidt;Joel N. Ullom;Leila R. Vale;Michael R. Vissers

引用次数: 0

The High Transmission Beamline Superconducting Magnets for High Rigidity Spectrometer Project at FRIB: Design Status

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-02-13 DOI: 10.1109/TASC.2025.3541155

Yoonhyuck Choi;Xiaoji Du;Danlu Zhang;David Greene;John Wenstrom;Yamen Al-Mahmoud;Hai Nguyen;Ryan Koschay;Courtney Smith;Junseong Kim;Mauricio Portillo;Shumpei Noji;Jon DeKamp;Samuel Miller;Chris Compton;Ting Xu;Jie Wei

{"title":"The High Transmission Beamline Superconducting Magnets for High Rigidity Spectrometer Project at FRIB: Design Status","authors":"Yoonhyuck Choi;Xiaoji Du;Danlu Zhang;David Greene;John Wenstrom;Yamen Al-Mahmoud;Hai Nguyen;Ryan Koschay;Courtney Smith;Junseong Kim;Mauricio Portillo;Shumpei Noji;Jon DeKamp;Samuel Miller;Chris Compton;Ting Xu;Jie Wei","doi":"10.1109/TASC.2025.3541155","DOIUrl":"https://doi.org/10.1109/TASC.2025.3541155","url":null,"abstract":"The High Rigidity Spectrometer (HRS) project is a critical expansion of the Facility for Rare Isotope Beams (FRIB), designed to transport high-emittance rare isotope beams with magnetic rigidities of up to 8 Tesla-meters. The HRS consists of two main segments: the upstream High Transmission Beamline (HTBL) and the downstream Spectrometer Section (SPS). This paper presents the design feature of the HTBL's superconducting magnets, which include eight quadrupole triplets and four dipoles. Two different approaches for the quadrupole magnets are explored: the iron-dominated and coil-dominated designs, each with distinct electromagnetic characteristics and manufacturing techniques incorporating nested higher-order multipoles. The dipole design builds upon the proven technology of FRIB's existing switching dipoles, benchmarked from the National Superconducting Cyclotron Laboratory (NSCL) era. Here, we discuss the advantages and limitations of the proposed design options and their performance to meet HTBL operational requirements. Insights gained through FRIB's design advancements and challenges encountered in developing high-performance superconducting magnets for the HRS project are also presented.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553508","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