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TY - CONF AU - Wolff, J.C. AU - Iversen, J.I. AU - Klinke, D. AU - Kostin, D. AU - Reschke, D. AU - Sievers, S. AU - Sulimov, A. AU - Thie, J.H. AU - Wendel, R. AU - Wiencek, M. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - Investigation of the Critical RF Fields of Superconducting Cavity Connections 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 - To optimise the length of the drift tube of a superconducting cavity (SC), it is required to know the critical value of the RF fields to prevent a potential early quench at the flange connection in case of a drift tube length reduction. To avoid changes on the SC which has been used for the tests, all RF cryogenic experiments have been carried out by using a cylinder in the center of a 1-cell cavity drift tube to increase the field magnitude at the connection. This cylinder has been designed and optimised by RF simulations to provide a field density at the connection twice as high as at a chosen reference point near the iris. Hence also a test SC with a comparatively low gradient can be used without causing field restrictions. In this contribution an approach to investigate the field limitations of 1.3 GHz TESLA-Shape SC connections and thereby the minimal drift tube length based on simulations will be presented. PB - JACoW Publishing CP - Geneva, Switzerland SP - 230 EP - 234 DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-MOP070 UR - http://jacow.org/srf2019/papers/mop070.pdf ER -