| Title |
Magnetic Field Penetration of Niobium Thin Films Produced by the ARIES Collaboration |
| Authors |
- D.A. Turner
Cockcroft Institute, Lancaster University, Lancaster, United Kingdom
- G. Burt, K.D. Dumbell, O.B. Malyshev, R. Valizadeh
Cockcroft Institute, Warrington, Cheshire, United Kingdom
- G. Burt
Lancaster University, Lancaster, United Kingdom
- E. Chyhyrynets, C. Pira
INFN/LNL, Legnaro (PD), Italy
- T. Junginger
TRIUMF, Vancouver, Canada
- T. Junginger
UVIC, Victoria, Canada
- S.B. Leith, M. Vogel
University Siegen, Siegen, Germany
- O.B. Malyshev, R. Valizadeh
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
- A. Medvids, P. Onufrijevs
Riga Technical University, Riga, Latvia
- R. Ries
Slovak Academy of Sciences, Institute of Electrical Engineering, Bratislava, Slovak Republic
- E. Seiler
IEE, Bratislava, Slovak Republic
- A. Sublet
CERN, Meyrin, Switzerland
- J.T.G. Wilson
STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom
|
| Abstract |
Superconducting (SC) thin film coatings on Cu substrates are already widely used as an alternative to bulk Nb SRF structures. Using Cu allows improved thermal stability compared to Nb due to having a greater thermal conductivity. Niobium thin film coatings also reduce the amount of Nb required to produce a cavity. The performance of thin film Nb cavities is not as good as bulk Nb cavities. The H2020 ARIES WP15 collaboration studied the impact of substrate polishing and the effect produced on Nb thin film depositions. Multiple samples were produced from Cu and polished with various techniques. The polished Cu substrates were then coated with a Nb film at partner institutions. These samples were characterised with surface characterisation techniques for film morphology and structure. The SC properties were studied with 2 DC techniques, a vibrating sample magnetometer (VSM) and a magnetic field penetration (MFP) facility. The results conclude that both chemical polishing and electropolishing produce the best DC properties in the MFP facility. A comparison between the VSM and the MFP facility can be made for 10 micron thick samples, but not for 3 micron thick samples.
|
| Paper |
download SUPFDV007.PDF [1.511 MB / 5 pages] |
| Poster |
download SUPFDV007_POSTER.PDF [1.064 MB] |
| Cite |
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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 |
21 June 2021 |
| Accepted |
28 October 2021 |
| Issue Date |
09 April 2022 |
| DOI |
doi:10.18429/JACoW-SRF2021-SUPFDV007 |
| Pages |
77-81 |
| 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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