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TY - CONF AU - Vogel, E. AU - Barbanotti, S. AU - Brinkmann, A. AU - Buettner, Th. AU - Iversen, J.I. AU - Jensch, K. AU - Klinke, D. AU - Kostin, D. AU - Muhs, A. AU - Möller, W.-D. AU - Schaffran, J. AU - Schmökel, M. AU - Sekutowicz, J.K. AU - Sievers, S. AU - Steder, L. AU - Steinhau-Kühl, N. AU - Sulimov, A. AU - Thie, J.H. AU - Weise, H. AU - Wenskat, M. AU - Wiencek, M. AU - Winkelmann, L. AU - van der Horst, B. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - Status of the All Superconducting Gun Cavity at DESY 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 - At DESY, the development of a 1.6-cell, 1.3 GHz all superconducting gun cavity with a lead cathode attached to its back wall is ongoing. The special features of the structure like the back wall of the half-cell and cathode hole require adaptations of the procedures used for the treatment of nine-cell TESLA cavities. Unsatisfactory test results of two prototype cavities motivated us to re-consider the back-wall design and production steps. In this contribution we present the status of the modified cavity design including accessories causing accelerating field asymmetries, like a pick up antenna located at the back wall and fundamental power- and HOM couplers. Additionally, we discuss preliminary considerations for the compensation of kicks caused by these components. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1087 EP - 1090 KW - cavity KW - cathode KW - SRF KW - gun KW - niobium DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-THP080 UR - http://jacow.org/srf2019/papers/thp080.pdf ER -