Dramatic improvement of superconducting accelerating cavity performance by introduction of laminated thin film structure
Project/Area Number |
26600142
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Quantum beam science
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Research Institution | Kyoto University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
佐伯 学行 大学共同利用機関法人高エネルギー加速器研究機構, 加速器研究施設, 准教授 (70282506)
久保 毅幸 大学共同利用機関法人高エネルギー加速器研究機構, 加速器研究施設, 助教 (30712666)
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Project Period (FY) |
2014-04-01 – 2018-03-31
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Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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Keywords | 超伝導 / 薄膜 / 高周波 / 積層薄膜 / 超伝導加速管 / 超伝導空胴 / 高調波 |
Outline of Final Research Achievements |
The superconducting laminated thin film structure may dramatically improve the performance of superconducting acceleration cavities. In order to study the laminated thin film structure, characteristics of the superconducting thin film structure under cryogenic temperature were investigated. They were evaluated by measuring third harmonic distortions (THD) on induced voltages of an excitation coil of a magnetic field applied to the sample. We have developed the THD measurement system. In the sample of the system with NbN superconducting thin film coated on a high purity bulk niobium plate with a thin SiO2 insulation layer in between, we obtained the world's first measurement result withstanding the magnetic field exceeding the lower critical field of Nb. By this measurement, it becomes possible to formulate guidelines for future thin film fabrication, and it has become possible to accelerate further efforts to improve the performance of the superconducting acceleration cavity.
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Report
(5 results)
Research Products
(25 results)
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[Journal Article] EVALUATION OF SUPERCONDUCTING CHARACTERISTICS ON THE THIN-FILM STRUCTURE BY NbN AND INSULATOR COATINGS ON PURE Nb SUBSTRATE2018
Author(s)
R. Katayama, Y. Iwashita, H. Tongu A. Four, C. Z. Antoine, H. Hayano, T. Kubo, T. Saeki, Hayato Ito, R. Ito, T. Nagata, H. Oikawa
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Journal Title
Proceedings of the 9th International Particle Accelerator Conference
Volume: 1
Related Report
Open Access / Int'l Joint Research
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[Presentation] EVALUATION OF SUPERCONDUCTING CHARACTERISTICS ON THE THIN-FILM STRUCTURE BY NbN AND INSULATOR COATINGS ON PURE Nb SUBSTRATE2018
Author(s)
R. Katayama, Y. Iwashita, H. Tongu A. Four, C. Z. Antoine, H. Hayano, T. Kubo, T. Saeki, Hayato Ito, R. Ito, T. Nagata, H. Oikawa
Organizer
9th International Particle Accelerator Conference(IPAC18)
Related Report
Int'l Joint Research
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[Presentation] The next technologies2017
Author(s)
Takayuki Kubo
Organizer
GARD-SRF Roadmap Workshop
Place of Presentation
Fermilab (Illinois.U.S.A.)
Year and Date
2017-02-09
Related Report
Int'l Joint Research / Invited
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[Presentation] The next SRF technologies2016
Author(s)
Takayuki Kubo
Organizer
The International Workshop on Future Linear Colliders (LCWS2016)
Place of Presentation
Aiina Center & MALIOS (岩手県盛岡市)
Year and Date
2016-12-05
Related Report
Int'l Joint Research / Invited
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