The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Pan, F. AU - Guo, H. AU - He, Y. AU - Jiang, T.C. AU - Li, Z.X. AU - Tan, T. AU - Wang, H.N. AU - Xiong, P.R. AU - Zhang, C. ED - Zhao, Hongwei ED - He, Yuan ED - Li, Lu ED - Schaa, Volker RW TI - Nb Sputtered 325 MHz QWR Cavities for CiADS J2 - Proc. of HIAT2018, Lanzhou, China, 22-26 October 2018 CY - Lanzhou, China T2 - International Conference on Heavy Ion Accelerator Technology T3 - 14 LA - english AB - CIADS is considering to use quarter wave resonators (QWRs), made by niobium thin film sputtered on copper bases, at its low energy section. Comparing with bulk niobium cavities, the Nb/Cu cavities feature a much better thermal and mechanical stability at 4.5 K. A 325 MHz QWR cavity has been fabricated at IMP, to demostrate the niobium coated copper cavity technique can meet the requirements of CIADS. The cavity is coated with biased DC diode sputtering technique. This paper covers resulting film characters, vertical tests with the evolution of the sputtering process, and improvements to mitigate issues we meet. PB - JACoW Publishing CP - Geneva, Switzerland SP - 145 EP - 147 KW - cavity KW - niobium KW - SRF KW - target KW - coupling DA - 2019/11 PY - 2019 SN - 978-3-95450-203-5 DO - doi:10.18429/JACoW-HIAT2018-WEPB06 UR - http://jacow.org/hiat2018/papers/wepb06.pdf ER -