IEEE Transactions on Applied Superconductivity最新文献

Study on the Instability of TPS With Superconducting Harmonic Cavity Under High Beam Current Operation

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2024-12-12 DOI: 10.1109/TASC.2024.3516724

Zong-Kai Liu;Ming-Chyuan Lin;Chih-Hung Lo;Chaoen Wang;Meng-Shu Yeh;Fu-Yu Chang;Mei-Hsia Chang;Fu-Tsai Chung;Ling-Jhen Chen;Shian-Wen Chang;Yi-Ta Li

{"title":"Study on the Instability of TPS With Superconducting Harmonic Cavity Under High Beam Current Operation","authors":"Zong-Kai Liu;Ming-Chyuan Lin;Chih-Hung Lo;Chaoen Wang;Meng-Shu Yeh;Fu-Yu Chang;Mei-Hsia Chang;Fu-Tsai Chung;Ling-Jhen Chen;Shian-Wen Chang;Yi-Ta Li","doi":"10.1109/TASC.2024.3516724","DOIUrl":"https://doi.org/10.1109/TASC.2024.3516724","url":null,"abstract":"The Taiwan Photon Source (TPS) is a third-generation, 3 GeV low-emittance light source situated at the NSRRC in Taiwan. The TPS has a bunch length of approximately 4.5 mm at routine operation with a beam current of 500 mA. This short bunch length leads to a brief Touschek lifetime and high parasitic loss in in-vacuum insertion devices. To address this issue, a 1.5 GHz two-cell superconducting RF (SRF) passive harmonic cavity (HC) operating at 4.5 K has been designed for the TPS. The anticipated bunch lengthening factors, accounting for phase transient effects, range from 1.5 to 2.3 for different bunches. Beyond performance enhancement, the study of the instability of the electron beam is also an important task. This work investigates the instability during high beam current operation with the SRF HC. This paper delves into the details of theoretical calculations, the methodology of multi-bunch multi-particle tracking simulation, and presents the results of the instability study.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875111","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

Effects of Dy and BHO Additions on Performances of MOD-YBa2Cu3O7-δ Films by Two-step Method

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2024-12-12 DOI: 10.1109/TASC.2024.3516743

Jing Chen;Rongtie Huang;Zhiyong Liu;Yong Li;Wenjing Wu;Yuan Du;Minjuan Li;Gang Wang;Chuanbing Cai

引用次数: 0

Development of Decay Energy Spectroscopy for Radio Impurity Analysis

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2024-12-12 DOI: 10.1109/TASC.2024.3515965

J. S. Chung;O. Gileva;C. Ha;J. A Jeon;H. B. Kim;H. L. Kim;Y. H. Kim;H. J. Kim;M. B. Kim;D. H. Kwon;D. S. Leonard;D. Y. Lee;Y. C. Lee;H. S. Lim;K. R. Woo;J. Y. Yang

{"title":"Development of Decay Energy Spectroscopy for Radio Impurity Analysis","authors":"J. S. Chung;O. Gileva;C. Ha;J. A Jeon;H. B. Kim;H. L. Kim;Y. H. Kim;H. J. Kim;M. B. Kim;D. H. Kwon;D. S. Leonard;D. Y. Lee;Y. C. Lee;H. S. Lim;K. R. Woo;J. Y. Yang","doi":"10.1109/TASC.2024.3515965","DOIUrl":"https://doi.org/10.1109/TASC.2024.3515965","url":null,"abstract":"We present the development of a decay energy spectroscopy (DES) method for the analysis of radioactive impurities using magnetic microcalorimeters (MMCs). The DES system was designed to analyze radionuclides, such as \u0000<inline-formula><tex-math>$^{226}$</tex-math></inline-formula>\u0000Ra, \u0000<inline-formula><tex-math>$^{228}$</tex-math></inline-formula>\u0000Th, and their daughter nuclides, in materials like copper, commonly used in rare-event search experiments. We tested the DES system with a gold foil absorber measuring 20\u0000<inline-formula><tex-math>$,times, 20 , times$</tex-math></inline-formula>\u0000 0.05 mm\u0000<inline-formula><tex-math>$^{3}$</tex-math></inline-formula>\u0000, large enough to accommodate a significant drop of source solution. Using this large absorber and an MMC sensor, we conducted a long-term measurement over ten days of live time, requiring 11 ADR cooling cycles. The combined spectrum achieved an energy resolution of 45 keV FWHM, sufficient to identify most alpha and DES peaks of interest. Specific decay events from radionuclide contaminants in the absorber were identified. This experiment confirms the capability of the DES system to measure alpha decay chains of \u0000<inline-formula><tex-math>$^{226}$</tex-math></inline-formula>\u0000Ra and \u0000<inline-formula><tex-math>$^{228}$</tex-math></inline-formula>\u0000Th, offering a promising method for radio-impurity evaluation in ultra-low background experiments.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875109","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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IEEE Transactions on Applied Superconductivity Information for Authors

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2024-12-11 DOI: 10.1109/TASC.2024.3508420

引用次数: 0

IEEE Transactions on Applied Superconductivity Subject Categories for Article Numbering

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2024-12-11 DOI: 10.1109/TASC.2024.3508416

引用次数: 0

Development of Transition Edge Sensor Array for Wide Energy Range Gamma-Ray Spectroscopy

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2024-12-11 DOI: 10.1109/TASC.2024.3515959

Ryan Smith;Takahiro Kikuchi;Yasushi Sato;Fuminori Hirayama;Akira Sato;Satoshi Kohjiro;Hiroyuki Takahashi

{"title":"Development of Transition Edge Sensor Array for Wide Energy Range Gamma-Ray Spectroscopy","authors":"Ryan Smith;Takahiro Kikuchi;Yasushi Sato;Fuminori Hirayama;Akira Sato;Satoshi Kohjiro;Hiroyuki Takahashi","doi":"10.1109/TASC.2024.3515959","DOIUrl":"https://doi.org/10.1109/TASC.2024.3515959","url":null,"abstract":"We have developed a gamma-ray spectrometer based on 8-pixel superconducting transition edge sensor (TES) microcalorimeter which can detect gamma rays with energies up to 0.8 MeV. We applied 0.8 mm × 0.8 mm × 0.8 mm Sn absorbers which provide sufficient saturation energies and absorption efficiencies for gamma rays with energies more than 0.2 MeV. We used a mixed source of \u0000<sup>137</sup>\u0000Cs and \u0000<sup>22</sup>\u0000Na which emits 32 keV X-rays, 511 keV annihilation radiations and 662 keV gamma rays. Signals from our detector were simultaneously readout using microwave multiplexing. The energy resolution of our 8-pixel TES microcalorimeters were \u0000<inline-formula><tex-math>${text{330}},{text{ eV}} leq Delta {{E}_{text{FWHM}}} leq {text{7.2}} text{keV}$</tex-math></inline-formula>\u0000, and 3 pixels showed better energy resolution than 400 eV for 662 keV gamma rays. The 511 keV annihilation peaks were \u0000<inline-formula><tex-math>$Delta E > {text{1}} text{keV}$</tex-math></inline-formula>\u0000, which are most likely caused by the Doppler broadening effect.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-4"},"PeriodicalIF":1.7,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875133","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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Quasi-Lumped Coplanar Waveguide Diplexers for a Multichroic Polarimeter

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2024-12-11 DOI: 10.1109/TASC.2024.3514596

Sirui Ren;Tian Xia;Shiling Yu;Yu Wang;Mingzhu Zhang;Yuxin Qiu;Xiaohui Yan;Ruirui Fan;Xucheng Dai;Zhanzhang Mai;Zhongyu Shi;Yue Hong;Liming Zou;Haitao Wang;Hongli Zhu;Jiawei Liu;Haoyu Wang;Weijie Guo;Yiwen Wang;Yanru Song;Xiaohang Zhang;Ran Duan

引用次数: 0

Dynamic Electromagnetic Response of D-Shaped No-Insulation Coil Under Pulse Background Field

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2024-12-11 DOI: 10.1109/TASC.2024.3515954

Xueliang Wang;Jie Sheng;Xiao-Fen Li;Shuhao Peng;Zhijian Jin

引用次数: 0

Effects on the Magnetic Field Stability of Coupling Currents Existing in a Two-Tape Bundle of a HTS Insert Prototype

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2024-12-11 DOI: 10.1109/TASC.2024.3514994

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

{"title":"Effects on the Magnetic Field Stability of Coupling Currents Existing in a Two-Tape Bundle of a HTS Insert Prototype","authors":"A. Zampa;Y. Tsuchiya;K. Takahashi;T. Okada;S. Awaji;T. Uto;H. Takewa;S. Hanai;S. Ioka;J. Inagaki","doi":"10.1109/TASC.2024.3514994","DOIUrl":"https://doi.org/10.1109/TASC.2024.3514994","url":null,"abstract":"The High Field Laboratory for Superconducting Materials (HFLSM) is developing a 33 T Cryogen-free Superconducting Magnet (CSM). The major part of the magnetic field will be achieved thanks to a High Temperature Superconductor (HTS) insulated insert based on the Robust Coil concept. This design features, for each turn, two tapes wound together, in direct contact to enhance the coil's protection. However, a drawback of this architecture is the development of coupling currents caused by variations in the axial component of the magnetic field. These currents lead to additional losses and affect the quality of the magnetic field. This work focuses specifically on the impact of these coupling currents on the magnetic field quality at the location of the future samples in the context of developing a user magnet. The case study of this work is a large-scale prototype of the future HTS insert. To achieve this objective, numerical simulations were conducted to differentiate what are the qualitative effects of coupling currents and screening currents. The results showed that these currents have opposite effects on the magnetic field at the sample position. Additionally, the large-scale prototype experienced long current plateaus, during which the magnetic field was measured. The variations of the latter were driven by the relaxation of these opposing effects, each exhibiting different rates and relaxation times.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-6"},"PeriodicalIF":1.7,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875081","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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IEEE Transactions on Applied Superconductivity Publication Information

IF 1.7 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2024-12-11 DOI: 10.1109/TASC.2024.3508414

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