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

A Double-Sided Oxide Buffer Architecture to Facilitate REBCO Growth for High Performance 促进 REBCO 生长以实现高性能的双面氧化物缓冲器结构

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-07 DOI: 10.1109/TASC.2025.3526857

Jithin sai Sandra;Venkata Manoj Are;Susancy Sherin;Vamsi Yerraguravagari;Bhabesh Sarangi;Abhin Prabhakaran;Venkat Selvamanickam

{"title":"A Double-Sided Oxide Buffer Architecture to Facilitate REBCO Growth for High Performance","authors":"Jithin sai Sandra;Venkata Manoj Are;Susancy Sherin;Vamsi Yerraguravagari;Bhabesh Sarangi;Abhin Prabhakaran;Venkat Selvamanickam","doi":"10.1109/TASC.2025.3526857","DOIUrl":"https://doi.org/10.1109/TASC.2025.3526857","url":null,"abstract":"In this article, we present an approach based on a double-sided oxide buffer architecture to reduce cost and improve the critical current of REBa2Cu3O7+δ (RE = rare earth) superconductor tapes. We detail the successful reel-to-reel manufacturing process of a 20-m-long double-sided oxide buffer tape, which facilitates the growth of double-sided REBCO tapes. Our oxide buffer stack consists of a 45-μm-thick in-house electropolished Hastelloy substrate optimized for an average surface roughness (<italic>Ra) < 1 nm on both sides, followed by amorphous alumina diffusion barrier on both the sides using midfrequency reactive magnetron sputtering. We optimized the alumina thickness to prevent the delamination of thicker REBCO films. We deposited an 8-nm-thick yttria oxide seed layer and a 10-nm-thick biaxially textured magnesium oxide (MgO) template layer, using ion-beam-assisted deposition (IBAD), on both sides of the tape. This was followed by sequential deposition, on both sides of the tape, of a 60-nm-thick homo-epitaxial MgO film using midfrequency reactive magnetron sputtering and a 60-nm-thick cap layer of lanthanum manganate (LaMnO3 = LMO) using radio frequency reactive magnetron sputtering. We employed a sacrificial tape in IBAD and other sputtering techniques to obtain scratch-free buffer films on both sides. We characterized the buffer quality using 2-D XRD omega and phi scans of the LMO film, and the full-width at half-maximum of out-of-plane texture and in-plane texture on both sides is in the range of 3.5 ± 0.2° and 7 ± 0.5°, respectively. In order to characterize the uniformity of the buffer quality over long tapes, 2-D XRD scans on both sides of the buffer were employed for every 2 m, and the statistical variation along the tape length was determined.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 2","pages":"1-6"},"PeriodicalIF":1.7,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143184371","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

Obstacles to Two-Line Josephson Traveling Wave Parametric Amplifier

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-07 DOI: 10.1109/TASC.2025.3526746

Victor K. Kornev;Alena N. Nikolaeva;Nikolay V. Kolotinskiy

引用次数: 0

Critical Current Performances of CICC Consisting of Two Different Arrangements of Quasi-Isotropic Strands

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-07 DOI: 10.1109/TASC.2025.3526893

Junhua Cheng;Yinshun Wang;Ye He;Jingjing Liu;Chengpeng Mao;Lingfeng Zhu

{"title":"Critical Current Performances of CICC Consisting of Two Different Arrangements of Quasi-Isotropic Strands","authors":"Junhua Cheng;Yinshun Wang;Ye He;Jingjing Liu;Chengpeng Mao;Lingfeng Zhu","doi":"10.1109/TASC.2025.3526893","DOIUrl":"https://doi.org/10.1109/TASC.2025.3526893","url":null,"abstract":"The high current cable-in-conduit conductor (CICC) consisting of high-temperature superconducting (HTS) strands has great potential for application in high field magnets. Multiple strands can be arranged in various ways to form CICC, such as centrosymmetric and axisymmetric arrangements. In this paper, the critical current performances of CICC consisting of the two arrangements of strands are analyzed. Firstly, using the finite element method (FEM) and a self-consistent model, the critical current of CICC with two arrangements of quasi-isotropic strands (Q-IS) are numerically analyzed at 77, 20 and 4.2 K, in applied magnetic fields with different magnitudes and orientations, respectively. Meanwhile, parallel calculations are conducted on the critical current of CICC consisting of direct stacked conductor (DSC). Finally, the critical current of the CICC under different magnetic fields are measured by experiment in 77 K, which showed good consistency with the simulation results. The results indicate that using a centrosymmetric arrangement can achieve better critical current isotropy for CICC, and also show that the isotropy of using Q-ISs is better than that of DSCs, regardless of the arrangement. This paper provides a reference for the selection of strand type as well as arrangement for CICC production.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-8"},"PeriodicalIF":1.7,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143183906","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

High Resolution Fission Fragment Spectroscopy with Superconducting Microcalorimeters

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-07 DOI: 10.1109/TASC.2024.3523251

Rico U. Schoenemann;Daniel G. McNeel;Veronika Mocko;Daniel R. Schmidt;Jason E. Nobles;Daniel T. Becker;Per E. Magnelind;Stefania Dede;Caleb W. Fink;Shannon E. Kossmann;Katherine A. Schreiber;Mark P. Croce;Jack Winkelbauer;Matthew H. Carpenter

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

Application of Hard X-Ray and Gamma-Ray TES Microcalorimeter at Accelerator Facility

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.2024.3525445

Takeshi Y. Saito;Shinji Okada;Yuichi Toyama;Toshiyuki Azuma;Baptista Goncalo;Daniel T. Becker;Douglas Bennett;William B. Doriese;Joseph Fowler;Johnathon D. Gard;Tadashi Hashimoto;Ryota Hayakawa;Tasuku Hayashi;Yuto Ichinohe;Jozsef Imrek;Paul Indelicato;Tadaaki Isobe;Sohtaro Kanda;Naritoshi Kawamura;John A. Mates;Yasuhiro Miyake;Kelsey M. Morgan;Hirofumi Noda;Galen C. O'Neil;Takuma Okumura;Nancy Paul;Dan Schmidt;Kouichiro Shimomura;Patrick Strasser;Daniel S. Swetz;Tadayuki Takahashi;Motonobu Tampo;Joel Ullom;Izumi Umegaki;Joel C. Weber;Shinya Yamada;Daikang Yan

{"title":"Application of Hard X-Ray and Gamma-Ray TES Microcalorimeter at Accelerator Facility","authors":"Takeshi Y. Saito;Shinji Okada;Yuichi Toyama;Toshiyuki Azuma;Baptista Goncalo;Daniel T. Becker;Douglas Bennett;William B. Doriese;Joseph Fowler;Johnathon D. Gard;Tadashi Hashimoto;Ryota Hayakawa;Tasuku Hayashi;Yuto Ichinohe;Jozsef Imrek;Paul Indelicato;Tadaaki Isobe;Sohtaro Kanda;Naritoshi Kawamura;John A. Mates;Yasuhiro Miyake;Kelsey M. Morgan;Hirofumi Noda;Galen C. O'Neil;Takuma Okumura;Nancy Paul;Dan Schmidt;Kouichiro Shimomura;Patrick Strasser;Daniel S. Swetz;Tadayuki Takahashi;Motonobu Tampo;Joel Ullom;Izumi Umegaki;Joel C. Weber;Shinya Yamada;Daikang Yan","doi":"10.1109/TASC.2024.3525445","DOIUrl":"https://doi.org/10.1109/TASC.2024.3525445","url":null,"abstract":"The X-ray spectroscopy of the muonic atom has attracted atomic, nuclear, and particle physicists since its discovery. The properties of a muonic atom, such as its binding energy or atomic radius, are different from an ordinary atom because of the difference in the mass between the muon and electron. Our collaboration has employed superconductor transition-edge sensor (TES) microcalorimeters for the x-ray spectroscopy of the muonic atom. Thanks to the recent detector development, the 44-keV lines from muonic Ar, which is important for the precision test of bound-state quantum electrodynamics, and the 76-keV lines from muonic Si, which is of interest from the viewpoint of the measurement of nuclear radii, have been reached by the dynamic range of the state-of-art TES microcalorimeters. An accelerator facility that can produce a high-intensity muon beam is necessary for such spectroscopic experiments. We performed a commissioning experiment of the hard x-ray and gamma-ray TES microcalorimeter at the J-PARC MLF MUSE muon beam line. The energy resolution, gain stability, and performance of timing selection of the pulses were evaluated in the environment of a large-scale accelerator facility.","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":"143106206","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

AC Loss Characteristics of a Double Pancake Coil Wound With Multifilamentary REBCO Tape With High Inter-Filament Resistance 用具有高丝间电阻的多丝 REBCO 胶带绕制的双薄饼线圈的交流损耗特性

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.2025.3525599

Ryoma Oishi;Koudai Jingami;Yuji Nishida;Yuuki Himeno;Ryota Kashiwagi;Hiromasa Sasa;Koichi Yoshida;Hiroshi Miyazaki;Masataka Iwakuma;Hishiro T. Hirose;Teruo Izumi;Takato Machi;Miyuki Nakamura

{"title":"AC Loss Characteristics of a Double Pancake Coil Wound With Multifilamentary REBCO Tape With High Inter-Filament Resistance","authors":"Ryoma Oishi;Koudai Jingami;Yuji Nishida;Yuuki Himeno;Ryota Kashiwagi;Hiromasa Sasa;Koichi Yoshida;Hiroshi Miyazaki;Masataka Iwakuma;Hishiro T. Hirose;Teruo Izumi;Takato Machi;Miyuki Nakamura","doi":"10.1109/TASC.2025.3525599","DOIUrl":"https://doi.org/10.1109/TASC.2025.3525599","url":null,"abstract":"Reducing AC loss in superconducting AC equipment is crucial because of its substantial contribution to the cryogenic load. Decreasing the filament width can mitigate hysteresis loss of REBa2Cu3O7−δ (REBCO, RE = rare earth elements) superconducting tapes, and segmenting the superconducting layer into multiple filaments is a viable reduction approach. However, filaments tend to connect when the inter-filament resistance is low. Therefore, we propose Cut and Aggregated Multifilamentary (CaAM) tapes with high inter-filament resistance achieved via the electrodeposition of polyimide across the entire tape. This tape configuration involves aligning four 1-mm-wide filaments in parallel and bonding them onto a polyimide substrate. AC loss measurements of short tapes exhibit a reduction at high magnetic fields. Additionally, we fabricated double pancake coils, each coil contained 80<inline-formula><tex-math>$ times $</tex-math></inline-formula> 2 turns, wound with monofilament tape and CaAM tape (coils A and B, respectively) and assessed the AC loss of the fabricated coils in liquid nitrogen. Experimental results indicate that the AC loss of coil B, using CaAM tape, is greater than that of coil A in the low-current region. However, they are almost identical in the high-current region. In contrast to the multifilament tapes with low inter-filament resistance, CaAM tapes indicate the possibility of loss reduction when used in coils.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-6"},"PeriodicalIF":1.7,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143184039","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

Key Considerations for Efficient Seeding and Seed Selection in Single-Direction Melt Growth

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.2025.3526101

Filip Antončík;M. Lojka;T. Hlásek;O. Jankovský;D. Sedmidubský

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