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TY - CPAPER AU - Busch, M. AU - Amberg, M. AU - Basten, M. AU - Dziuba, F.D. AU - Podlech, H. AU - Ratzinger, U. TI - Recent Measurements on the SC 325 MHz CH-Cavity J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 AB - At the Institute for Applied Physics (IAP), Frankfurt University, a sc 325 MHz CH-Cavity has been designed and fabricated. Successful tests at 4 K and 2 K with gradients up to 14.1 MV/m have been performed. The cavity is destined for a 11.4 AMeV 10 mA ion beam at the GSI UNILAC, Darmstadt. Consisting of 7 gaps and a geometrical beta of 0.16 this resonator is designed to provide a gradient of 5 MV/m. Novel features of this structure comprise a compact design, low electric peak fields, improved surface processing possibilities and power coupling. In addition a tuner system based on mechanically deformable bellow tuners attached inside the cavity and driven either by a stepping motor or a piezo actuator will keep the cavity on resonance. This contribution reports about the latest measurements on the cavity with the recently attached helium vessel and a renewed surface processing. PB - JACoW CY - Geneva, Switzerland SP - 255 EP - 257 KW - cavity KW - ion KW - linac KW - heavy-ion KW - controls DA - 2015/12 PY - 2015 SN - 978-3-95450-178-6 DO - 10.18429/JACoW-SRF2015-MOPB065 UR - http://srf2015.vrws.de/papers/mopb065.pdf ER -