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IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-03-01 Epub Date: 2026-04-28 DOI: 10.1109/TASC.2026.3685844

引用次数: 0

IEEE Foundation: Reflecting on 50 Years of Impact IEEE基金会：反思50年的影响

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-03-01 Epub Date: 2026-04-28 DOI: 10.1109/TASC.2026.3685846

引用次数: 0

Thermal Crosstalk in 24-Pixel Hard X-Ray TES Arrays: Comparative Experiments and Multibody Simulations 24像素硬x射线TES阵列的热串扰：比较实验和多体模拟

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-02-23 DOI: 10.1109/TASC.2026.3659736

Panthita Triamkitsawat;Orlando Quaranta;Tejas Guruswamy;Umeshkumar Patel;Lisa Gades;Jonathan Baldwin;Antonino Miceli

{"title":"Thermal Crosstalk in 24-Pixel Hard X-Ray TES Arrays: Comparative Experiments and Multibody Simulations","authors":"Panthita Triamkitsawat;Orlando Quaranta;Tejas Guruswamy;Umeshkumar Patel;Lisa Gades;Jonathan Baldwin;Antonino Miceli","doi":"10.1109/TASC.2026.3659736","DOIUrl":"https://doi.org/10.1109/TASC.2026.3659736","url":null,"abstract":"In this study, we conducted simulations and experimental characterization of thermal crosstalk in a hard X-ray transition–edge sensor (TES) array. TESs are low-temperature superconducting detectors with excellent energy resolution, making them ideal for synchrotron applications. To achieve the required count rate and collecting area, TES detectors are typically organized into multipixel arrays. However, tight pixel spacing and multiplexing can introduce thermal and electrical crosstalk that degrades spectral resolution at high photon rates. We characterized the crosstalk phenomena between X-ray TESs in a 24-pixel array. This TES array, fabricated at the Argonne National Laboratory (ANL), is designed to operate in the tens of keV regime. In prior work, we experimentally developed procedures and algorithms to identify and quantify crosstalk in various setups. To further explain the phenomenon, we created a multibody model to simulate the thermal crosstalk response between neighboring TES pixels. Simulations correlate the observed thermal crosstalk with key device properties: material composition, TES transition shape parameters (<inline-formula><tex-math>$alpha$</tex-math></inline-formula> and <inline-formula><tex-math>$beta$</tex-math></inline-formula>), and intrinsic characteristics such as heat capacity and thermal conductance.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"36 6","pages":"1-7"},"PeriodicalIF":1.8,"publicationDate":"2026-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147299709","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

Investigation of Current Redistribution in Multifilamentary REBCO Tapes With Bridges 带桥的多丝REBCO带中电流再分布的研究

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-02-23 DOI: 10.1109/TASC.2026.3665684

Martin Kucharovič;Tomáš Kujovič;Fedor Gömöry;Marcela Pekarčíková;Christian R. H. Bahl;Anders C. Wulff;Sara Landvogt

{"title":"Investigation of Current Redistribution in Multifilamentary REBCO Tapes With Bridges","authors":"Martin Kucharovič;Tomáš Kujovič;Fedor Gömöry;Marcela Pekarčíková;Christian R. H. Bahl;Anders C. Wulff;Sara Landvogt","doi":"10.1109/TASC.2026.3665684","DOIUrl":"https://doi.org/10.1109/TASC.2026.3665684","url":null,"abstract":"Filamentisation of superconducting tapes is an effective way to reduce alternating current (AC) losses in REBCO-coated conductors. However, current redistribution in filamented tapes may be a challenge, as local defects in individual filaments may lead to reduced performance. A remedy for this is the introduction of periodically spaced short bridges, or non-filamentized sections in the superconductor layer. The purpose of these segments is to facilitate a rerouting of current to even out the consequences of any defects in individual filaments. Multifilamentary REBCO tapes were fabricated starting from SUBRA's three-dimensionally structured Hastelloy substrate, onto which the buffer and superconductor were deposited by THEVA using large-scale industrial processes. We tested the current-voltage properties and evaluated local voltages by soldering voltage contacts onto individual filaments. A numerical model was developed using COMSOL Multiphysics (COMSOL AB, 2024) to simulate current sharing through bridges and within filamented sections. Our results show that bridge length could be reduced from the current 10 mm to approximately 1 mm without compromising redistribution performance. The simulations suggest that current redistribution over distance alone is less effective than using bridges, even at distances approaching 20 cm. Experimental measurements qualitatively confirmed these predictions, showing improved voltage characteristics due to bridges, although quantitative differences remain and warrant further investigation.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"36 5","pages":"1-5"},"PeriodicalIF":1.8,"publicationDate":"2026-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147362367","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

Development of Phonon-Mediated Lumped Element Kinetic Inductance Detectors With Surface Activated Bonding 声子介导的表面活化键合集总元件动态电感探测器的研制

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-02-23 DOI: 10.1109/TASC.2026.3666868

Ryota Ito;Yuto Kamei;Tohru Taino;Satoru Mima;Takunori Taira;Hideho Odaka;Chiko Otani

{"title":"Development of Phonon-Mediated Lumped Element Kinetic Inductance Detectors With Surface Activated Bonding","authors":"Ryota Ito;Yuto Kamei;Tohru Taino;Satoru Mima;Takunori Taira;Hideho Odaka;Chiko Otani","doi":"10.1109/TASC.2026.3666868","DOIUrl":"https://doi.org/10.1109/TASC.2026.3666868","url":null,"abstract":"In this article, we have proposed novel phonon-mediated lumped element kinetic inductance detectors (LEKIDs) that exploit the anisotropic phonon propagation properties of stoichiometric lithium niobate (sLN). Because of its strong piezoelectricity introducing significant microwave loss, we adopted surface activated bonding (SAB) technology to spatially separate the LEKID electrodes from the sLN substrate, enabling high internal quality factors (<inline-formula><tex-math>$Q_{i}$</tex-math></inline-formula>). Simulations and experiments confirmed that this separation significantly suppresses <inline-formula><tex-math>$Q_{i}$</tex-math></inline-formula> degradation. LEKIDs were fabricated on the front side of a sapphire substrate, with sLN bonded to the backside using SAB. We achieved an improvement of approximately 1000 times in <inline-formula><tex-math>$Q_{i}$</tex-math></inline-formula> compared to devices on sLN. We also observed phonon responses from <inline-formula><tex-math>$alpha$</tex-math></inline-formula>-ray irradiation using an <inline-formula><tex-math>$bf ^{241}$</tex-math></inline-formula>Am radioactive source. These results demonstrate the potential of phonon-mediated detectors utilizing SAB.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"36 6","pages":"1-6"},"PeriodicalIF":1.8,"publicationDate":"2026-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147362536","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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Influence of Rare-Earth Variations on the Superconducting Properties of YBCO Films With and Without Artificial Pinning Centers 稀土含量变化对有和无人工钉钉中心YBCO薄膜超导性能的影响

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-02-23 DOI: 10.1109/TASC.2026.3666832

M. M. Aye;S. Mejia;H. Huhtinen;P. Paturi

{"title":"Influence of Rare-Earth Variations on the Superconducting Properties of YBCO Films With and Without Artificial Pinning Centers","authors":"M. M. Aye;S. Mejia;H. Huhtinen;P. Paturi","doi":"10.1109/TASC.2026.3666832","DOIUrl":"https://doi.org/10.1109/TASC.2026.3666832","url":null,"abstract":"Thin films of Y<inline-formula><tex-math>$_{1-x}$</tex-math></inline-formula>Gd<inline-formula><tex-math>$_{x}$</tex-math></inline-formula>Ba <inline-formula><tex-math>$_{2}$</tex-math></inline-formula>Cu<inline-formula><tex-math>$_{3}$</tex-math></inline-formula>O<inline-formula><tex-math>$_{7-delta }$</tex-math></inline-formula> (<inline-formula><tex-math>$x$</tex-math></inline-formula> = 0, 1/3, 1/2, 2/3, 1), with and without BaZrO<inline-formula><tex-math>$_{3}$</tex-math></inline-formula> (BZO) artificial pinning centers (APCs), were deposited by pulsed laser deposition (PLD) under growth parameters identical to those used for YBa<inline-formula><tex-math>$_{2}$</tex-math></inline-formula>Cu<inline-formula><tex-math>$_{3}$</tex-math></inline-formula>O<inline-formula><tex-math>$_{7-delta }$</tex-math></inline-formula>. The effects of partial Gd substitution on the critical current density <inline-formula><tex-math>$J_{mathrm{c}}$</tex-math></inline-formula> were systematically investigated and the results were found to differ between APC-free and BZO-doped films. Partial substitution of Y by Gd significantly enhanced <inline-formula><tex-math>$J_{mathrm{c}}$</tex-math></inline-formula>, particularly in films containing BZO nanorods. At 10 K, the <inline-formula><tex-math>$x$</tex-math></inline-formula> = 2/3 film with APC showed <inline-formula><tex-math>$J_{mathrm{c}}$</tex-math></inline-formula> enhancements up to 45% over the <inline-formula><tex-math>$x$</tex-math></inline-formula> = 0 film across a wide magnetic field and temperature range. These findings strongly support Gd doping in YBCO as a highly promising route for future applications requiring maximized magnetic-field-dependent critical current densities.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"36 5","pages":"1-5"},"PeriodicalIF":1.8,"publicationDate":"2026-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11408015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147362329","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

Dark Characterization of Ti/Al LEKIDs for the Search of Axions in the $W$-Band Ti/Al LEKIDs暗表征在W -波段寻找轴子

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-02-23 DOI: 10.1109/TASC.2026.3664493

Victor Rollano;Alejandro Pascual Laguna;David Rodriguez;Martino Calvo;Maria Teresa Magaz;Daniel Granados;Alessandro Monfardini;Alicia Gomez

{"title":"Dark Characterization of Ti/Al LEKIDs for the Search of Axions in the $W$-Band","authors":"Victor Rollano;Alejandro Pascual Laguna;David Rodriguez;Martino Calvo;Maria Teresa Magaz;Daniel Granados;Alessandro Monfardini;Alicia Gomez","doi":"10.1109/TASC.2026.3664493","DOIUrl":"https://doi.org/10.1109/TASC.2026.3664493","url":null,"abstract":"In this article, we report the electrical (dark) characterization of lumped-element kinetic inductance detectors (LEKIDs) fabricated from a titanium/aluminum bilayer and designed for broadband absorption in the <inline-formula><tex-math>$W$</tex-math></inline-formula>-band (75–110 GHz). These detectors are prototypes for future quantum chromodynamics axion search experiments within the Canfranc axion detection experiment (CADEx), which demand sub-<inline-formula><tex-math>$10^{-19} text{W}/sqrt{text{Hz}}$</tex-math></inline-formula> sensitivities under low optical backgrounds. We combine a Mattis–Bardeen analysis to the temperature dependence of the detector parameters with noise spectroscopy to determine the electrical noise equivalent power (NEP). The minimum measured value for the electrical NEP is <inline-formula><tex-math>$sim 3 times 10^{-19} text{W}/sqrt{text{Hz}}$</tex-math></inline-formula>. Across the measured temperature range, we find that quasiparticle lifetime deviates from the expected BCS recombination law. Our analysis suggests that nonequilibrium relaxation is governed by spatial inhomogeneities in the superconducting gap and phonon diffusion effects. This work sets the road-map to achieve suitable and ultra-sensitive detectors in the <inline-formula><tex-math>$W$</tex-math></inline-formula>-band for dark matter axion search experiments.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"36 6","pages":"1-7"},"PeriodicalIF":1.8,"publicationDate":"2026-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11407985","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147362479","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

The Distributed Strain Measurement of Dipole Superconducting Magnet Coil Based on OFDR Distributed Fiber Optic Sensor 基于OFDR分布式光纤传感器的偶极超导磁体线圈分布应变测量

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-02-23 DOI: 10.1109/TASC.2026.3664365

Yongjie Zhang;Canjie Xin;Zhengnan Han;Mingzhi Guan

引用次数: 0

Corrections to “Status on the Development of the Nb3Sn 12 T Falcon Dipole for the FCC-hh” 对“FCC-hh用Nb3Sn 12t猎鹰偶极子研制现状”的更正

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-02-23 DOI: 10.1109/TASC.2025.3645888

Riccardo Umberto Valente;Amalia Ballarino;Andrea Bersani;Michela Bracco;Sergio Burioli;Barbara Caiffi;Ernesto De Matteis;Stefania Farinon;Andrea Gagno;Filippo Levi;Samuele Mariotto;Riccardo Musenich;Daniel Novelli;Arsenio Palmisano;Alessandra Pampaloni;Marco Prioli;Nicola Sala;Massimo Sorbi;Stefano Sorti;Marco Statera;Gianluca Vernassa

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On the Electromagnetic Couplings in Superconducting Qubit Circuits 超导量子比特电路中的电磁耦合

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2026-02-17 DOI: 10.1109/TASC.2026.3665667

Ebrahim Forati;Brandon W. Langley;Ani Nersisyan;Reza Molavi

{"title":"On the Electromagnetic Couplings in Superconducting Qubit Circuits","authors":"Ebrahim Forati;Brandon W. Langley;Ani Nersisyan;Reza Molavi","doi":"10.1109/TASC.2026.3665667","DOIUrl":"https://doi.org/10.1109/TASC.2026.3665667","url":null,"abstract":"The precise engineering of electromagnetic couplings is paramount for constructing scalable and high-fidelity superconducting quantum processors. While essential for orchestrating qubit operations, these couplings also present significant design challenges, including the mitigation of crosstalk and the management of environmental decoherence. A clear and unified theoretical framework is therefore crucial for the design, simulation, and analysis of these complex quantum circuits. This article presents a comprehensive theoretical treatment of the fundamental electromagnetic coupling mechanisms in superconducting devices. Starting from first principles, we formulate the equations of motion and derive the input–output relations for canonical systems, including a single resonator coupled to a multiport microwave network, interacting resonators, and coupled transmission lines. We review rigorous definitions for key parameters such as the energy decay rate (<inline-formula><tex-math>$kappa$</tex-math></inline-formula>) and the dimensionless coupling coefficient (<inline-formula><tex-math>$zeta$</tex-math></inline-formula>) and connect these formalisms to practical methods of parameter extraction from electromagnetic simulations. This work provides a rigorous and pedagogical foundation for understanding and modeling linear electromagnetic interactions, serving as a vital resource for the development of advanced superconducting quantum hardware.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"36 7","pages":"1-19"},"PeriodicalIF":1.8,"publicationDate":"2026-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147362567","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