The Effects of Electrons on Superconducting Cavities in the GHz Region
- 1 June 1971
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science
- Vol. 18 (3), 153-157
- https://doi.org/10.1109/tns.1971.4325992
Abstract
In superconducting cavities in the GHz region several field-dependent effects have been observed. Besides qualitatively well-understood effects due to H2 such as radiation pressure or heating one encounters also strange effects which could be explained by pre-breakdown field emission or by high-order multipactoring. The presence of electrons limits the power fed into the cavity and may cause a strong inductive loading of the cavity, permitting a pulling of the oscillating frequency by more than 10 kHz above the smallfield resonant frequency. Since this phenomenon could seriously hamper a frequency-tuning servo-system, we carried out a detailed study on superconducting cavities, the results of which are presented in this paper.Keywords
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