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TY - CPAPER AU - Grassellino, A. AU - Aderhold, S. AU - Checchin, M. AU - Crawford, A.C. AU - Gonnella, D. AU - Grimm, C.J. AU - Hocker, A. AU - Köszegi, J.M. AU - Liepe, M. AU - Martinello, M. AU - Melnychuk, O.S. AU - Ozelis, J.P. AU - Posen, S. AU - Rowe, A.M. AU - Sergatskov, D.A. AU - Solyak, N. AU - Stanek, R.P. AU - Wu, G. TI - Preservation of Very High Quality Factors of 1.3 GHz Nine Cell Cavities From Bare Vertical Test to Dressed Horizontal Test J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 AB - In this contribution we will report quality factor evolution of several different nine cell N doped cavities with very high Q. The evolution of the quality factor will be reported from bare to dressed in vertical test to dressed in horizontal test with unity coupling to dressed in horizontal test and CM-like environment/configuration (with RF ancillaries). Cooling studies and optimal cooling regimes will be discussed for both vertical and horizontal tests and comparisons will be drawn also for different styles titanium vessels. Studies of sensitivities to magnetic field in final horizontal configuration have been performed by applying a field around the dressed cavity and varying the cooling; parameters required for a very good flux expulsion will be presented. PB - JACoW CY - Geneva, Switzerland SP - 149 EP - 153 KW - cavity KW - cryomodule KW - factory KW - shielding KW - HOM DA - 2015/12 PY - 2015 SN - 978-3-95450-178-6 DO - 10.18429/JACoW-SRF2015-MOPB028 UR - http://srf2015.vrws.de/papers/mopb028.pdf ER -