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Superconducting Nb/sub 3/Sn cavities with high quality factors and high critical flux densities

Journal Article · · J. Appl. Phys.; (United States)
DOI:https://doi.org/10.1063/1.323278· OSTI ID:7269027
As considerable progress is expected to result from the use of high-T/sub c/ superconductors at microwave frequencies, we started a study of the microwave properties of Nb/sub 3/Sn. Preparation was done by exposing niobium cavities to a saturated tin atmosphere. Microwave measurements of the unloaded quality factor Q/sub 0/ and the critical flux density B/sup ac//sub c/ were performed in the TE/sub 011/ mode at 9.5 GHz. At 1.5 K low-field values of Q/sub 0/ up to 6 x 10/sup 9/ and B/sup ac//sub c/ values up to 100 mT with a Q/sub 0/ of 2.3 x 10/sup 9/ were obtained. At 4.2 K and at low magnetic flux densities a Q/sub 0/ of 2.7 x 10/sup 9/ was reached. (AIP)
Research Organization:
Siemens AG, Research Laboratories, D-8520 Erlangen, Federal Republic of Germany
OSTI ID:
7269027
Journal Information:
J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 47:9; ISSN JAPIA
Country of Publication:
United States
Language:
English