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TY - CPAPER AU - Wu, G. AU - Aderhold, S. AU - Chandrasekaran, S.K. AU - Crawford, A.C. AU - Grassellino, A. AU - Grimm, C.J. AU - Ozelis, J.P. AU - Sergatskov, D.A. AU - Vostrikov, A. TI - Magnetic Foils for SRF Cryomodule J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 AB - High quality factor niobium cavities require minimal residual magnetic field around the high magnetic field region. A typical global magnetic shield takes more material and provides less effective magnetic screening. On the other hand, local magnetic shield has to introduce complex geometries to cover access ports and instrumentation and thermal straps. Local magnetic source and thermal current will increase residual field seen by SRF cavities regardless the complexity of local magnetic shield. Magnetic foils that is cryogenic compatible provides a great benefit to reduce residual magnetic field. This paper will describe the evaluation of such magnetic foils in both vertical and horizontal test. PB - JACoW CY - Geneva, Switzerland SP - 844 EP - 846 KW - cavity KW - shielding KW - SRF KW - cryogenics KW - niobium DA - 2015/12 PY - 2015 SN - 978-3-95450-178-6 DO - 10.18429/JACoW-SRF2015-TUPB099 UR - http://srf2015.vrws.de/papers/tupb099.pdf ER -