Enhancement of the Accelerating Gradient in Superconducting Microwave Resonators

Conference · Mon May 01 00:00:00 EDT 2017

DOI:https://doi.org/10.18429/JACoW-LINAC2016-TUPLR024· OSTI ID:1420924

Checchin, Mattia ^[1]; Grassellino, Anna ^[1]; Martinello, Martina ^[2]; Posen, Sam  ^[1]; Romanenko, Alexander ^[1]; Zasadzinski, John ^[3]

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1. Fermilab
2. IIT, Chicago
3. IIT, Chicago (main)

The accelerating gradient of superconducting resonators can be enhanced by engineering the thickness of a dirty layer grown at the cavity's rf surface. In this paper the description of the physics behind the accelerating gradient enhancement by meaning of the dirty layer is carried out by solving numerically the the Ginzburg-Landau (GL) equations for the layered system. The calculation shows that the presence of the dirty layer stabilizes the Meissner state up to the lower critical field of the bulk, increasing the maximum accelerating gradient.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1420924
• Report Number(s): FERMILAB-CONF-16-739-TD; 1633202
• Resource Relation: Conference: 28th International Linear Accelerator Conference, East Lansing, Michigan, 09/25-09/30/2016
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS