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TY - CONF AU - Éozénou, F. AU - Cenni, E. AU - Devanz, G. AU - Nghiem, M.L.L. AU - Percerou, T. AU - Proslier, Th. AU - Servouin, C. ED - Schaa, Volker RW ED - He, Yuan ED - Li, Lu ED - Zhao, Ning TI - Investigation of BCP Parameters for Mastery of SRF Cavity Treatment J2 - Proc. of SRF2017, Lanzhou, China, July 17-21, 2017 C1 - Lanzhou, China T2 - International Conference on RF Superconductivity T3 - 18 LA - english AB - Mastery of Standard Buffered Chemical Polishing (with mixture of hydrofluoric, nitric and phosphoric acids) is of paramount importance for the treatment of SRF resonators with complex geometry has IFMIF half-wave resonators, in order to control accurately their frequency evolution. Furthermore, strong and unexpected asymmetry in removals has recently been observed after BCP treatment of ESS-medium beta resonators. The goal of this study is to investigate accurately influence of parameters such as surface geometry and orientation, acid temperature, agitation and their coupling on the removal rate. We will also focus on the influence of by-products such has NOx on kinetics. The mixture used is HF(40%)- HNO3(65%)-H3PO4(85%) with ratio 1-1-2.4. PB - JACoW CP - Geneva, Switzerland SP - 558 EP - 562 KW - ion KW - cavity KW - niobium KW - experiment KW - SRF DA - 2018/01 PY - 2018 SN - 978-3-95450-191-5 DO - 10.18429/JACoW-SRF2017-TUPB072 UR - http://jacow.org/srf2017/papers/tupb072.pdf ER -