Speaker
Description
One of the significant sources of residual losses in superconducting radio-frequency cavities is magnetic flux trapped during the cool-down due to the incomplete Messier effect. If the trapped vortices are non-uniformly distributed on the cavity surface, the temperature mapping revealed the “hot-spots” at the location of high density of pinned vortices. In this contribution, we present the results of combined temperature and magnetic mapping measurements on a single cell 3.0 GHz and 1.3 GHz niobium single-cell cavities. The results show the direct evidence of pinned vortices induced “hot-spots”.
Funding Agency
The work is partially supported by the U.S. DOE, Office of science, Office of High Energy Physics under Awards No. DE-SC 0009960. This manuscript has been authored by Jefferson Science Associates, L
Region represented | Asia |
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