Title |
A Comprehensive Picture of Hydride Formation and Dissipation |
Authors |
- N. Sitaraman, T. Arias
Cornell University, Ithaca, New York, USA
- A.V. Harbick, M.K. Transtrum
Brigham Young University, Provo, USA
- M. Liepe
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
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Abstract |
Research linking surface hydrides to Q-disease, and the subsequent development of methods to eliminate surface hydrides, is one of the great successes of SRF cavity R\&D. We use time-dependent Ginzburg-Landau to extend the theory of hydride dissipation to sub-surface hydrides. Just as surface hydrides cause Q-disease behavior, we show that sub-surface hydrides cause high-field Q-slope (HFQS) behavior. We find that the abrupt onset of HFQS is due to a transition from a vortex-free state to a vortex-penetration state. We show that controlling hydride size and depth through impurity doping can eliminate HFQS.
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Funding |
This work was supported by the U.S. National Science Foundation under Award PHY-1549132, the Center for Bright Beams. |
Paper |
download MOPMB020.PDF [2.031 MB / 5 pages] |
Cite |
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Conference |
SRF2023 |
Series |
International Conference on RF Superconductivity (21st) |
Location |
Grand Rapids, MI, USA |
Date |
25-30 June 2023 |
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); Volker R.W. Schaa (GSI, Darmstadt, Germany); Paul W. Thomas (FRIB, MSU, East Lansing, MI, USA) |
Online ISBN |
978-3-95450-234-9 |
Online ISSN |
2673-5504 |
Received |
30 June 2023 |
Revised |
18 July 2023 |
Accepted |
19 August 2023 |
Issue Date |
19 August 2023 |
DOI |
doi:10.18429/JACoW-SRF2023-MOPMB020 |
Pages |
119-123 |
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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