DocumentCode
798885
Title
Investigation of the Surface Resistance of a Niobium-Cavity at S-Band
Author
Kneisel, P. ; Stoltz, O. ; Halbritter, J.
Author_Institution
Universitÿt und Kernforschungszentrum Karlsruhe, Germany
Volume
18
Issue
3
fYear
1971
fDate
6/1/1971 12:00:00 AM
Firstpage
158
Lastpage
159
Abstract
Measurements of the RF-residual surface resistance of superconducting niobium have been carried out between 2-4 GHz. The experiments show that also for type II superconductors like niobium the losses due to frozen-in magnetic flux can be described by Rres¿¿2/3 (anomalous skin-effect). For negligible frozen-in flux the residual losses are proportional to ¿1.7±0.2 like in the case of lead, indicating that a general mechanism seems to be responsible for these residual losses. By electrochemical oxidation we have achieved fields up to 325 G in the TM011-mode.
Keywords
Chemicals; Couplings; Electrical resistance measurement; Frequency dependence; Frequency measurement; Magnetic field measurement; Niobium; Superconducting coils; Surface resistance; Type II superconductors;
fLanguage
English
Journal_Title
Nuclear Science, IEEE Transactions on
Publisher
ieee
ISSN
0018-9499
Type
jour
DOI
10.1109/TNS.1971.4325993
Filename
4325993
Link To Document