The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Eremeev, G.V. AU - Crahen, W. AU - Henry, J. AU - Marhauser, F. AU - Pudasaini, U. AU - Reece, C.E. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - RF Performance Sensitivity to Tuning of Nb₃Sn Coated CEBAF Cavities J2 - Proc. of SRF2019, Dresden, Germany, 30 June-05 July 2019 CY - Dresden, Germany T2 - International Conference on RF Superconductivity T3 - 19 LA - english AB - Nb₃Sn has the potential to surpass niobium as the material of choice for SRF applications. The potential of this material stems from a larger superconducting energy gap, which leads to expectations of a higher RF critical field and a lower RF surface resistance. The appeal of better superconducting properties is offset by the relative complexity of producing practical Nb₃Sn structures, and Nb₃Sn sensitivity to lattice disorder challenges the use of the material for practical applications. Such sensitivity is indirectly probed during SRF cavity development, when the cavity is tuned to match the desired accelerator frequency. In the course of recent experiments we have coated and tuned several multi-cell cavities. Cold RF measurements before and after tuning showed degradation in cavity performance after tuning. The results of RF measurement were compared against strain evolution on Nb₃Sn surface during tuning based on CST and ANSYS models. PB - JACoW Publishing CP - Geneva, Switzerland SP - 55 EP - 59 KW - cavity KW - simulation KW - SRF KW - experiment KW - factory DA - 2019/08 PY - 2019 SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-MOP015 UR - http://jacow.org/srf2019/papers/mop015.pdf ER -