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TY - CONF AU - Behtouei, M. AU - Faillace, L. AU - Migliorati, M. AU - Palumbo, L. AU - Spataro, B. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - New Analytical Derivation of Group Velocity in TW Accelerating Structures J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - Ultra high-gradient accelerating structures are needed for the next generation of compact light sources. In the framework of the Compact Light XLS project, we are studying a high harmonic traveling-wave accelerating structure operating at a frequency of 35.982 GHz, in order to linearize the longitudinal space phase. In this paper, we propose a new analytical approach for the estimation of the group velocity in the structure and we compare it with numerical electromagnetic simulations that are carried out by using the code HFSS in the frequency domain. PB - JACoW Publishing CP - Geneva, Switzerland SP - 155 EP - 158 KW - cavity KW - dipole KW - simulation KW - polarization KW - coupling DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-MOPGW030 UR - http://jacow.org/ipac2019/papers/mopgw030.pdf ER -