IEEE Transactions on Applied Superconductivity最新文献

A High-Speed, High-Resolution Transition Edge Sensor Spectrometer for Soft X-Rays at the Advanced Photon Source 用于先进光子源软x射线的高速、高分辨率过渡边缘传感器光谱仪

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.2025.3526110

Orlando Quaranta;Don Jensen;Kelsey Morgan;Joel C. Weber;Jessica L. McChesney;Hao Zheng;Tejas Guruswamy;Jonathan Baldwin;Ben Mates;Nathan Ortiz;Johnathon Gard;Doug Bennet;Dan Schmidt;Lisa Gades;Antonino Miceli

{"title":"A High-Speed, High-Resolution Transition Edge Sensor Spectrometer for Soft X-Rays at the Advanced Photon Source","authors":"Orlando Quaranta;Don Jensen;Kelsey Morgan;Joel C. Weber;Jessica L. McChesney;Hao Zheng;Tejas Guruswamy;Jonathan Baldwin;Ben Mates;Nathan Ortiz;Johnathon Gard;Doug Bennet;Dan Schmidt;Lisa Gades;Antonino Miceli","doi":"10.1109/TASC.2025.3526110","DOIUrl":"https://doi.org/10.1109/TASC.2025.3526110","url":null,"abstract":"This project explores the design and development of a transition edge sensor (TES) spectrometer for resonant soft X-ray scattering (RSXS) measurements developed in collaboration between Argonne National Laboratory (ANL) and the National Institute of Standards and Technology (NIST). Soft X-ray scattering is a powerful technique for studying the electronic and magnetic properties of materials on a microscopic level. However, the lack of high-performance soft X-ray spectrometers has limited the potential of this technique. TES spectrometers have the potential to overcome these limitations due to their high energy resolution, high efficiency, and broad energy range. This project aims to optimize the design of a TES spectrometer for RSXS measurements and more generally soft X-ray spectroscopy at the Advanced Photon Source (APS) 29-ID, leading to improved understanding of advanced materials. We will present a detailed description of the instrument design and implementation. The spectrometer consists of a large array of approximately 250 high-speed and high-resolution pixels. The pixels have saturation energies of approximately 1 keV, sub-ms pulse duration and energy resolution of approximately 1 eV. The array is read out using microwave multiplexing chips with MHz bandwidth per channel, enabling efficient data throughput. To facilitate measurement of samples in situ under ultra-high vacuum conditions at the beamline, the spectrometer is integrated with an approximately 1 m long snout.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992946","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 Analysis of Short Period 2G-HTS Undulators 短周期2G-HTS波动器的设计与分析

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-08 DOI: 10.1109/TASC.2024.3524211

Ibrahim Kesgin;Mark Jaski

引用次数: 0

Basic Design of REBCO Insert Coil of 33 T Cryogen-Free Superconducting Magnet 33t无低温超导磁体REBCO插入线圈的基本设计

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-06 DOI: 10.1109/TASC.2024.3524490

T. Uto;T. Tosaka;T. Shitaka;H. Nezuka;S. Hanai;H. Takewa;J. Inagaki;S. Ioka;A. Badel;K. Takahashi;A. Zampa;T. Okada;Y. Tsuchiya;S. Awaji

{"title":"Basic Design of REBCO Insert Coil of 33 T Cryogen-Free Superconducting Magnet","authors":"T. Uto;T. Tosaka;T. Shitaka;H. Nezuka;S. Hanai;H. Takewa;J. Inagaki;S. Ioka;A. Badel;K. Takahashi;A. Zampa;T. Okada;Y. Tsuchiya;S. Awaji","doi":"10.1109/TASC.2024.3524490","DOIUrl":"https://doi.org/10.1109/TASC.2024.3524490","url":null,"abstract":"A 33 T cryogen-free superconducting magnet (33 T-CSM) is under development. The 33 T-CSM consists of a REBCO insert coil and Nb3Sn/NbTi outsert coils. The REBCO insert coil is designed to generate 19 T in the external field of 14 T. The REBCO insert coil is composed of stacked 64 single pancake coils wound with two bundled REBCO tapes. The inner and outer diameters of the REBCO insert coil are 68 mm and 295 mm, respectively. The REBCO coil is impregnated with epoxy resin for conduction cooling. To prevent delamination of the superconducting layer by thermal stress, the fluorine-coated polyimide tape is co-wound with REBCO tapes and to prevent degradation of superconductivity by electromagnetic stress, reinforcing tape is also co-wound. According to 2D-FEM, it is shown that the circumferential strain <italic>ϵθ under applying electromagnetic force is 0.29% . The results of 2D-FEM also suggest that stress concentration occurs at the connection between the coil and the bus bar, and at the widthwise end of the REBCO tape. In this paper, the basic design of the insert coil and the results of FEM analysis will be described.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142993435","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 Conical Accelerator Magnet With Unique CCT Properties 一种具有独特CCT特性的锥形加速器磁铁

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-06 DOI: 10.1109/TASC.2025.3526096

Shlomo Caspi;Lucas Brouwer;Laura Garcia Fajardo;Ye Yang

引用次数: 0

Clocked Gate Reduction With Clockless Gates in Technology Mapping for RSFQ Logic Circuits RSFQ逻辑电路技术映射中的无时钟门降频

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-06 DOI: 10.1109/TASC.2025.3526124

Nobutaka Kito;Kazuyoshi Takagi;Naofumi Takagi

{"title":"Clocked Gate Reduction With Clockless Gates in Technology Mapping for RSFQ Logic Circuits","authors":"Nobutaka Kito;Kazuyoshi Takagi;Naofumi Takagi","doi":"10.1109/TASC.2025.3526124","DOIUrl":"https://doi.org/10.1109/TASC.2025.3526124","url":null,"abstract":"Technology mapping is a process in logic synthesis for designing logic circuits. It converts an internal graph representation of logic functions into a gate-level netlist. This study proposes a method that involves introducing clockless gates proactively into resultant netlists of RSFQ logic circuits. Ordinary RSFQ circuits consist of clocked gates and necessitate path balancing. The usage of clockless gates working without clock inputs reduces the number of clocked gates and logic stages, which leads to a smaller clock distribution network. The capability of reducing the number of stages is essential to improve flexibility in the number of logic stages of designed circuits. The method introduces more clockless gates into the resultant netlist compared with our previous method instead of a longer clock period. It utilizes a specific library of supergates, that is, small single-output circuits with several logic gates, used in technology mapping. The library is generated by adding supergates that utilize clockless gates, except for their output parts, to an original library with no clockless gates. The method reduces the number of clocked gates to a greater extent than our previous method and gives designers a higher degree of flexibility in the number of logic stages. The evaluation results indicate that the number of clocked gates in netlists and logic stages is reduced by over 40% when compared with netlists without clockless gates.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992944","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

2024 Index IEEE Transactions on Applied Superconductivity Vol. 34 IEEE应用超导学报，第34卷

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-06 DOI: 10.1109/TASC.2025.3525839

引用次数: 0

Fabrication and Evaluation of CuNb-Reinforced Nb3Sn React-and-Wind Coils cunb增强Nb3Sn反风线圈的制备与评价

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-06 DOI: 10.1109/TASC.2024.3525454

Yuta Ebara;Fumiaki Kamisaki;Hiroshi Ookubo;Jun Yoshida;Masahiro Sugimoto;Ryo Taniguchi;Kengo Nakao;Satoshi Awaji

{"title":"Fabrication and Evaluation of CuNb-Reinforced Nb3Sn React-and-Wind Coils","authors":"Yuta Ebara;Fumiaki Kamisaki;Hiroshi Ookubo;Jun Yoshida;Masahiro Sugimoto;Ryo Taniguchi;Kengo Nakao;Satoshi Awaji","doi":"10.1109/TASC.2024.3525454","DOIUrl":"https://doi.org/10.1109/TASC.2024.3525454","url":null,"abstract":"Nb3Sn wires are used in many high-field magnets, such as those used in accelerators and nuclear fusion reactors. The react-and-wind (R&W) method, in which coils are fabricated using heat-treated wire, provides several advantages in the manufacturing of Nb3Sn coils. For instance, no furnace is required for coil heat treatment, and impregnated resins and supports can be used without considering high-temperature durability. However, in R&W production, the degradation of the critical current owing to the strain in Nb3Sn should be considered, including the strain caused by the windings. Recently, a polyvinyl-formal-coated CuNb-reinforced Nb3Sn wire with a diameter of 0.88 mm was developed by Furukawa Electric Company. The wire has a small diameter among CuNb/Nb3Sn wires and can reduce the strain caused by bending, enabling the fabrication of R&W coils with a small bending radius. We use the wire for manufacturing coils with a minimum radius of 55 mm via the R&W method and present the performance evaluation results.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142993436","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

Demonstration of $text{MgB}_{2}$ React-and-Wind Coil $text{MgB}_{2}$反应-风力线圈演示

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-06 DOI: 10.1109/TASC.2025.3526108

Yuta Ebara;Fumiaki Kamisaki;Hiroshi Ookubo;Jun Yoshida

{"title":"Demonstration of $text{MgB}_{2}$ React-and-Wind Coil","authors":"Yuta Ebara;Fumiaki Kamisaki;Hiroshi Ookubo;Jun Yoshida","doi":"10.1109/TASC.2025.3526108","DOIUrl":"https://doi.org/10.1109/TASC.2025.3526108","url":null,"abstract":"The critical temperature of <inline-formula><tex-math>$text{MgB}_{2}$</tex-math></inline-formula> exceeds that of NbTi, making it a superior choice for superconducting applications. By utilizing liquid hydrogen instead of liquid helium for cooling <inline-formula><tex-math>$text{MgB}_{2}$</tex-math></inline-formula> coils, the cost of cooling can be reduced greatly, particularly when combined with hydrogen technology. In addition, in cryogen-free magnets, <inline-formula><tex-math>$text{MgB}_{2}$</tex-math></inline-formula> coils offer energy-saving benefits as the cooling efficiency increases with the operating temperature. The use of <inline-formula><tex-math>$text{MgB}_{2}$</tex-math></inline-formula> wires in superconducting applications becomes feasible when considering cost advantages. The react-and-wind (R&W) method can reduce the manufacturing cost by eliminating the need for a furnace for coil heat treatment and enables the use of impregnated resins and supports without concerns regarding high-temperature durability. We fabricated an R&W <inline-formula><tex-math>$text{MgB}_{2}$</tex-math></inline-formula> coil with a minimum radius of 55 mm. This paper presents the details of the fabricated coil and measurement results.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142993370","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

Measurable Improvement in Multi-Qubit Readout Using a Kinetic Inductance Traveling Wave Parametric Amplifier 动态电感行波参量放大器对多量子位读出性能的显著改善

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-02 DOI: 10.1109/TASC.2024.3525451

M. A. Castellanos-Beltran;L. Howe;A. Giachero;M. R. Vissers;D. Labranca;J. N. Ullom;P. F. Hopkins

{"title":"Measurable Improvement in Multi-Qubit Readout Using a Kinetic Inductance Traveling Wave Parametric Amplifier","authors":"M. A. Castellanos-Beltran;L. Howe;A. Giachero;M. R. Vissers;D. Labranca;J. N. Ullom;P. F. Hopkins","doi":"10.1109/TASC.2024.3525451","DOIUrl":"https://doi.org/10.1109/TASC.2024.3525451","url":null,"abstract":"Increasing the size and complexity of quantum information systems requires highly-multiplexed readout architectures, as well as amplifier chains operating near the quantum limit (QL) of added noise. While documented prior efforts in KI-TWPA integration in quantum systems are scarce, in this work we demonstrate integration of a KI-TWPA with a multiplexed-qubit device. To quantify the system noise improvement we perform an ac Stark shift calibration to precisely determine noise power levels on-chip (at each cavity's reference plane) and the total system gain. We then characterize the qubit state measurement fidelity and the corresponding signal-to-noise ratio (SNR). To conduct the most faithful measurement of the benefits offered by the KI-TWPA we perform these measurements for readout chains where the high electron mobility transistor (HEMT) amplifier is the first-stage amplifier (FSA) – with none of the external hardware required to operate the KI-TWPA – and with the KI-TWPA as the FSA. While some readout cavities fall outside the KI-TWPA bandwidth, for those inside the bandwidth we demonstrate a maximum improvement in the state measurement SNR by a factor of 1.45, and increase the fidelity from 96.2% to 97.8%. These measurements demonstrate a system noise below 5 quanta <italic>referenced on-chip and we bound the KI-TWPA excess noise to be below 4 quanta for the six cavities inside its bandwidth. These results show a promising path forward for realizing quantum-limited readout chains in large qubit systems using a single parametric amplifier.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992945","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

IEEE Transactions on Applied Superconductivity Information for Authors IEEE应用超导信息汇刊

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2024-12-31 DOI: 10.1109/TASC.2024.3520265

引用次数: 0