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TY - CONF AU - Huang, Y.T. AU - Chan, C.K. AU - Chen, C.S. AU - Chen, J.-R. AU - Hsiung, G.-Y. AU - Liu, Y.-H. ED - Petit-Jean-Genaz, Christine ED - Arduini, Gianluigi ED - Michel, Peter ED - Schaa, Volker RW TI - Relief of an Electric Field via a Cone Structure J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014 C1 - Dresden, Germany T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - A terminated power cable is typically applied not only for terminated ends but also to connect two or more cables. The electric field inside the insulation layer becomes disturbed when a coaxial cable structure is broken and the electric stress increases near the ground edge. A structure of cone type is a major method to alter the lines of equi- potential and to relieve the electric stress around the ground. The dimensions of the cone depend on the cable structure. In this paper we introduce a way to calculate the displacement of equi-potential lines when a cone is brought into a coaxial cable, RG220, and then determine a suitable angle and length of the cone, which are important factors to withstand tens of kV and even greater. The corresponding high-voltage tests are also presented here. PB - JACoW CP - Geneva, Switzerland SP - 550 EP - 553 KW - high-voltage KW - kicker KW - extraction KW - booster KW - vacuum DA - 2014/07 PY - 2014 SN - 978-3-95450-132-8 DO - 10.18429/JACoW-IPAC2014-MOPME078 UR - http://jacow.org/ipac2014/papers/mopme078.pdf ER -