Conveners
Performance: Session 1
- Suba De Silva (Old Dominion University)
The progress in the development of Nb3Sn cavity coating by vapour diffusion method at IMP was reported. Several 1.3GHz single cell cavities were coated and vertically tested. Up to now, the unloaded Q value of IMP Nb3Sn cavity at 4.2K reached 7.6e9 at the low field region, which is about three times lower than the Cornell results. Meanwhile, the quench field was only Eacc=8MV/m. Although the...
In this talk, we present the current performance of Nb3Sn SRF cavities at Cornell University and recent research/progress towards improving their performance. We particularly focus on high frequency Nb3Sn cavities (> 1.3 GHz) and on understanding and improving the maximum accelerating gradient of Nb3Sn cavities (currently limited to 17 MV/m at Cornell University).
Two 1.5 GHz 5-cell accelerator cavities have been coated with Nb3Sn in JLab Nb3Sn cavity coating system. The cavities were qualified at 4 K in the vertical dewar test and are progressed towards their installation into a cryomodule. One of the cavities was used to study fundamental limitation of the coating material using two-mode excitation. Results from the fundamental study as well as the...
In this contribution, we present measurements from vertical testing of Nb3Sn cavities at Fermilab. Results include measurements on single cell cavities as well as 9-cell cavities. Most results are at 1.3 GHz, with some at other frequencies. Correlations are made to coating appearance.
