TY - CONF A1 - Amberg, Michael A1 - Aulenbacher, Kurt A1 - Busch, Marco A1 - Dziuba, Florian A1 - Podlech, Holger A1 - Ratzinger, Ulrich A1 - Mickat, Sascha A1 - Barth, Winfried T1 - Structural mechanics of superconducting CH cavities T2 - Proceedings of IPAC11 Conference, San Sebastián, Spain N2 - The superconducting CH-structure (Crossbar-H-mode) is a multi-cell drift tube cavity for the low and medium energy range operated in the H21-mode, which has been developed at the Institute for Applied Physics (IAP) of Frankfurt University. With respect to different high power applications two types of superconducting CH-structures (f = 325 MHz, β = 0.16, seven cells and f = 217 MHz, β = 0.059, 15 cells) are presently under construction and accordingly under development. The structural mechanical simulation is a very important aspect of the cavity design. Furthermore, several simulations with ANSYS Workbench have been performed to predict the deformation of the cavity walls due to the cavity cool-down, pressure effects and mechanical vibrations. To readjust the fast frequency changes in consequence of the cavity shape deformation, a new concept for the dynamic frequency tuning has been investigated, including a novel type of bellow-tuner. Y1 - 2011 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/36551 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-365512 UR - http://accelconf.web.cern.ch/AccelConf/IPAC2011/papers/mopc083.pdf SN - 978-92-9083-366-6 N1 - Copyright (c) 2011 by IPAC’11/EPS-AG — cc Creative Commons Attribution 3.0 (CC BY 3.0) IS - MOPC083 SP - 268 EP - 270 ER -