| Title |
Magnetic Field Penetration Technique to Study High Field Shielding of Multilayered Superconductors |
| Authors |
- I.H. Senevirathne, J.R. Delayen, A.V. Gurevich
ODU, Norfolk, Virginia, USA
- J.R. Delayen, A-M. Valente-Feliciano
JLab, Newport News, Virginia, USA
|
| Abstract |
The SIS structure which consists of alternative thin layers of superconductors and insulators on a bulk niobium has been proposed to shield niobium cavity surface from high magnetic field and hence increase the accelerating gradient. The study of the behavior of multilayer super-conductors in an external magnetic field is essential to optimize their SRF performance. In this work we report the development of a simple and efficient technique to measure penetration of magnetic field into bulk, thin film and multilayer superconductors. Experimental setup contains a small superconducting solenoid which can produce a parallel surface magnetic field up to 0.5 T and Hall probes to detect penetrated magnetic field across the superconducting sample. This system was calibrated and used to study the effect of niobium sample thickness on the field of full magnetic flux penetration. We determined the optimum thickness of the niobium substrate to fabricate the multilayer structure for the measurements in our setup. This technique was used to measure penetration fields of Nb₃Sn thin films and Nb₃Sn/Al₂O₃ multi-layers deposited on Al₂O₃ wafers.
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| Funding |
NSF Grants PHY-1734075 and PHY-1416051, and DOE Awards DE-SC0010081 and DE-SC0019399 |
| Paper |
download SUPTEV001.PDF [2.759 MB / 4 pages] |
| Cite |
download ※ BibTeX
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※ EndNote |
| Conference |
SRF2021 |
| Series |
International Conference on RF Superconductivity (20th) |
| Location |
East Lansing, MI, USA |
| Date |
28 June-02 July 2021 |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editorial Board |
Kenji Saito (FRIB, MSU, East Lansing, MI, USA); Ting Xu (FRIB, MSU, East Lansing, MI, USA); Naruhiko Sakamoto (RIKEN, Wako, Japan); Ana Lesage (FRIB, MSU, East Lansing, MI, USA); Volker R.W. Schaa (GSI, Darmstadt, Germany) |
| Online ISBN |
978-3-95450-233-2 |
| Online ISSN |
2673-5504 |
| Received |
22 June 2021 |
| Revised |
15 August 2021 |
| Accepted |
20 September 2021 |
| Issue Date |
28 April 2022 |
| DOI |
doi:10.18429/JACoW-SRF2021-SUPTEV001 |
| Pages |
112-115 |
| Copyright |
 Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |
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