JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
@inproceedings{mcgee:srf2021-supcav018, author = {K.E. McGee and G.V. Eremeev and M.P. Kelly and S.H. Kim and M. Martinello and A.V. Netepenko and P.N. Ostroumov and T. Reid and A. Taylor}, % author = {K.E. McGee and G.V. Eremeev and M.P. Kelly and S.H. Kim and M. Martinello and A.V. Netepenko and others}, % author = {K.E. McGee and others}, title = {{First N-Doping and Mid-T Baking of Medium-ß 644 MHz 5-Cell Elliptical Superconducting RF Cavities for Michigan State University’s Facility for Rare Isotope Beams}}, booktitle = {Proc. SRF'21}, % booktitle = {Proc. 20th International Conference on RF Superconductivity (SRF'21)}, pages = {53--56}, eid = {SUPCAV018}, language = {english}, keywords = {cavity, cathode, SRF, linac, cryomodule}, venue = {East Lansing, MI, USA}, series = {International Conference on RF Superconductivity}, number = {20}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {10}, year = {2022}, issn = {2673-5504}, isbn = {978-3-95450-233-2}, doi = {10.18429/JACoW-SRF2021-SUPCAV018}, url = {https://jacow.org/srf2021/papers/supcav018.pdf}, abstract = {{Two hadron linacs currently under development in the US, the PIP-II linac at Fermi National Accelerator Laboratory (FNAL) and the upgrade for Michigan State University’s Facility For Rare Isotope Beams (FRIB), will employ 650 and 644 MHz ß-0.6 elliptical superconducting cavities respectively to meet their design energy requirements. The desired CW operation modes of these two linacs sets Q-factor requirements well above any previously achieved for cavities at this operating frequency and velocity, driving the need to explore new high-Q treatments. The N-doping technique developed at FNAL and employed at an industrial scale to the LCLS-II cryomodules is a strong candidate for high-Q treatments, but work is needed to refine the treatment to the lower operating frequency and velocity regime. We present the first results of the first N-doping tests and a "mid-T" bake test in the FRIB 644 MHz 5-cell elliptical cavities.}}, }