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TY - CONF AU - Tamura, F. AU - Hasegawa, K. AU - Ohmori, C. AU - Paoluzzi, M.M. AU - Yoshii, M. ED - Petit-Jean-Genaz, Christine ED - Arduini, Gianluigi ED - Michel, Peter ED - Schaa, Volker RW TI - Beam Test of the CERN PSB Wide-band RF System Prototype in the J-PARC MR J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014 C1 - Dresden, Germany T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - In the framework of the LHC Injectors Upgrade project (LIU), a complete replacement of the existing narrow-band rf systems of CERN PSB with wide-band magnetic alloy (MA) loaded rf systems is in progress. A single gap MA loaded rf system prototype, which uses solid-state power amplifier and includes fast rf feedback for beam loading compensation, has been installed in the J-PARC MR to investigate the system behavior with high intensity proton beams. We report the wake voltage measurement results with and without fast rf feedback. In addition to the fast feedback, the rf feedforward method is under consideration to compensate the heavy beam loading more effectively. Preliminary beam test results with feedforward are also presented. PB - JACoW CP - Geneva, Switzerland SP - 3385 EP - 3387 KW - feedback KW - cavity KW - impedance KW - beam-loading KW - extraction DA - 2014/07 PY - 2014 SN - 978-3-95450-132-8 DO - 10.18429/JACoW-IPAC2014-THPME065 UR - http://jacow.org/ipac2014/papers/thpme065.pdf ER -