- Physical Review Journals
All JournalsPhysics Magazine
Access Provided by Xinjiang University

Physical Review Applied

Reuse & Permissions

It is not necessary to obtain permission to reuse this article or its components as it is available under the terms of the Creative Commons Attribution 3.0 License. This license permits unrestricted use, distribution, and reproduction in any medium, provided attribution to the author(s) and the published article's title, journal citation, and DOI are maintained. Please note that some figures may have been included with permission from other third parties. It is your responsibility to obtain the proper permission from the rights holder directly for these figures.

Export citation

Export citation

Choose format for download:

Download Citation
  • Open Access
  • Access by Xinjiang University

Quench-Induced Degradation of the Quality Factor in Superconducting Resonators

M. Checchin* and M. Martinello

A. Romanenko, A. Grassellino, D. A. Sergatskov, S. Posen, and O. Melnychuk

J. F. Zasadzinski

  • Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA and Department of Physics, Illinois Institute of Technology, Chicago, Illinois 60616, USA

  • Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA

  • Department of Physics, Illinois Institute of Technology, Chicago, Illinois 60616, USA

  • *checchin@fnal.gov
PDF

Phys. Rev. Applied 5, 044019 – Published 28 April, 2016

DOI: https://doi.org/10.1103/PhysRevApplied.5.044019

Abstract

Quench of superconducting radio-frequency cavities frequently leads to the lowered quality factor Q0, which had been attributed to the additional trapped magnetic flux. Here we demonstrate that the origin of this magnetic flux is purely extrinsic to the cavity by showing no extra dissipation (unchanged Q0) after quenching in zero magnetic field, which allows us to rule out intrinsic mechanisms of flux trapping such as generation of thermal currents or trapping of the rf field. We also show the clear relation of dissipation introduced by quenching to the orientation of the applied magnetic field and the possibility to fully recover the quality factor by requenching in the compensated field. We discover that for larger values of the ambient field, the Q-factor degradation may become irreversible by this technique, likely due to the outward flux migration beyond the normal zone opening during quench. Our findings are of special practical importance for accelerators based on low- and medium-β accelerating structures residing close to focusing magnets, as well as for all high-Q cavity-based accelerators.

View figure in article

Physics Subject Headings (PhySH)

Article Text

References (26)

  1. H. Padamsee, J. Knobloch, and T. Hays, RF Superconductivity for Accelerators (John Wiley and Sons, New York, 1998).
  2. H. Padamsee, RF Superconductivity, Science, Technology and Applications Vol. II (Wiley-VCH Verlag GmbH and Co., Weinheim, 2009).
  3. H. Padamsee, Superconducting radio-frequency cavities, Annu. Rev. Nucl. Part. Sci. 64, 175 (2014).
  4. A. Gurevich, Multiscale mechanisms of SRF breakdown, Physica (Amsterdam) 441C, 38 (2006).
  5. T. Kubo, Models of the magnetic field enhancement at pits, in Proceedings of the 16th Workshop on RF Superconductivity, TUP008, Paris, France, 2013.
  6. K. Saito, Theoretical critical field in rf applications, in Proceedings of the 11th Workshop on RF Superconductivity, MOO02, Travemünde, Germany, 2003.
  7. J. Knobloch and H. Padamsee, Flux trapping in niobium cavities during breakdown events, in Proceedings of the 8th Workshop on RF Superconductivity, B06, Abano Terme, Italy, 1997.
  8. I. M. Terechkine, T. N. Khabiboulline, and D. A. Sergatskov, Performance degradation of a superconducting cavity quenching in magnetic field, in Proceedings of the 16th International Conference on RF Superconductivity, THP047, Paris, France, 2013.
  9. T. N. Khabiboulline, J. Ozelis, D. A. Sergatskov, and I. M. Terechkine, FNAL Report No. TD-11-020, 2011.
  10. T. N. Khabiboulline, D. A. Sergatskov, and I. M. Terechkine, FNAL Report No. TD-12-007, 2012.
  11. T. N. Khabiboulline, D. A. Sergatskov, and I. M. Terechkine, FNAL Report No. TD-13-002, 2013.
  12. B. Aune et al., Superconducting TESLA cavities, Phys. Rev. ST Accel. Beams 3, 092001 (2000).
  13. P. Bishop et al., LCLS-II SRF cavity processing protocol development and baseline cavity performance demonstration, in Proceedings of the 17th International Conference on RF Superconductivity, MOPB033, TRIUMF, Vancouver, BC, Canada, 2015.
  14. J. Knobloch, H. Muller, and H. Padamsee, Design of a high speed, high resolution thermometry system for 1.5 ghz superconducting radio frequency cavities, Rev. Sci. Instrum. 65, 3521 (1994).
  15. M. Checchin, M. Martinello, A. Romanenko, A. Grassellino, O. Melnychuk, and D. A. Sergatskov, Origin of trapped flux caused by quench in superconducting niobium cavities, in Proceedings of the 6th International Particle Accelerator Conference, WEPTY021, Richmond, VA, USA, 2015.
  16. M. Checchin, Nature of the quality factor degradation in SRF cavities due to quench, in Proceedings of the 17th International Conference on RF Superconductivity, MOBA05, Whistler, Canada, 2015.
  17. T. E. Faber and A. B. Pippard, Kinetics of the phase transition in superconductors, Prog. Low Temp. Phys. 1, 159 (1955).
  18. S. Antipov, E. Efimenko, A. Romanenko, and D. A. Sergatskov, Time-resolved measurements of high field quench in SRF cavities, in Proceedings of the 16th International Conference on RF Superconductivity, TUP112, Paris, France, 2013.
  19. R. P. Huebener and A. Seher, Nernst effect and flux flow in superconductors. I. Niobium, Phys. Rev. 181, 701 (1969).
  20. R. P. Huebener, Magnetic Flux Structures in Superconductors (Springer-Verlag, Berlin, 2001).
  21. A. Gurevich and G. Ciovati, Effect of vortex hotspots on the radio-frequency surface resistance of superconductors, Phys. Rev. B 87, 054502 (2013).
  22. G. Ciovati and A. Gurevich, Evidence of high-field radio-frequency hot spots due to trapped vortices in niobium cavities, Phys. Rev. ST Accel. Beams 11, 122001 (2008).
  23. M. Rabinowitz, Analysis of a critical loss in a superconductor, J. Appl. Phys. 42, 88 (1971).
  24. M. Rabinowitz, Frequency dependence of superconducting cavity q and magnetic breakdown fields, Appl. Phys. Lett. 19 (1971).
  25. Y. B. Kim, C. F. Hempstead, and A. R. Strnad, Flux-flow resistance in type-II superconductors, Phys. Rev. 139, A1163 (1965).
  26. L. Embon, Y. Anahory1, A. Suhov, D. Halbertal, J. Cuppens, A. Yakovenko, A. Uri, Y. Myasoedov, M. L. Rappaport, M. E. Huber, A. Gurevich, and E. Zeldov, Probing dynamics and pinning of single vortices in superconductors at nanometer scales, Sci. Rep. 5, 7598 (2015).

Outline

Information

Phys. Rev. Applied 5, 044019– Published 28 April, 2016
  • Received 13 November 2015
Creative Commons Logo

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation