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TY - CONF AU - Kramer, F. AU - Knobloch, J. AU - Kugeler, O. AU - Köszegi, J.M. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - Mapping Flux Trapping in SRF Cavities to Analyze the Impact of Geometry 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 - A combined temperature and magnetic field mapping system was used to investigate the impact of an ambient field on trapped flux and on the resulting local surface resistance. For this, a 1.3 GHz TESLA single cell cavity was cooled through the superconducting transition at different magnetic field angles with respect to the cavity axis. The measurements suggest, that the field is trapped homogeneously over the cavity volume, without changing its orientation. Flux trapped perpendicular the surface contributed significantly more to the surface resistance, than trapped flux parallel to the surface. PB - JACoW Publishing CP - Geneva, Switzerland SP - 364 EP - 369 KW - cavity KW - experiment KW - HOM KW - niobium KW - simulation DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-TUFUB3 UR - http://jacow.org/srf2019/papers/tufub3.pdf ER -