Title |
Field Shielding of NbTiN Based Multilayer Structure for Accelerating Cavities |
Authors |
- I.H. Senevirathne, J.R. Delayen, A.V. Gurevich
ODU, Norfolk, Virginia, USA
- D.R. Beverstock
The College of William and Mary, Williamsburg, Virginia, USA
- D.R. Beverstock, J.R. Delayen, A-M. Valente-Feliciano
JLab, Newport News, Virginia, USA
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Abstract |
Over the past few decades, bulk niobium (Nb) has been the material of choice for superconducting radio frequen-cy (SRF) cavities used in particle accelerators to achieve higher accelerating gradients and lower RF losses. Multi-layer (SIS) structures consisting of alternating thin layers of superconductor(S) and insulator(I) deposited on a bulk Nb have been proposed to enhance the peak surface magnetic field and sustain a higher accelerating gradient. In this study, multilayers based NbTiN and AlN deposited on bulk Nb are used to test the proposed enhancement using the DC magnetic Hall probe technique. The tech-nique detects a penetrating magnetic field through the multilayer sample as it is placed under an external mag-netic field produced by a magnetic coil. This work re-ports the characterization and measurements of the mag-netic field of full flux penetration through single layers of NbTiN and bilayers of NbTiN/AlN on bulk Nb.
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Funding |
NSF Grants PHY-1734075 and PHY-1416051, and DOE Awards DE-SC0010081 and DE-SC0019399 |
Paper |
download THPOGE19.PDF [1.421 MB / 4 pages] |
Cite |
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Conference |
LINAC2022 |
Series |
International Linear Accelerator Conference (31st) |
Location |
Liverpool, UK |
Date |
28 August-02 September 2022 |
Publisher |
JACoW Publishing, Geneva, Switzerland |
Editorial Board |
Peter McIntosh (STFC DL, Daresbury, UK); Graeme Burt (Lancaster Univ., Lancaster, UK); Robert Apsimon (Lancaster Univ., Lancaster, UK); Volker R.W. Schaa (GSI, Darmstadt, Germany) |
Online ISBN |
978-3-95450-215-8 |
Online ISSN |
2226-0366 |
Received |
24 August 2022 |
Revised |
01 September 2022 |
Accepted |
08 September 2022 |
Issue Date |
15 September 2022 |
DOI |
doi:10.18429/JACoW-LINAC2022-THPOGE19 |
Pages |
836-839 |
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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