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TY - CONF AU - Alesini, D. AU - Bini, S. AU - Di Raddo, R. D. AU - Ficcadenti, L. AU - Lollo, V.L. AU - Palumbo, L. AU - Pellegrino, L. AU - Pettinacci, V. AU - Serafini, L. ED - Petit-Jean-Genaz, Christine ED - Arduini, Gianluigi ED - Michel, Peter ED - Schaa, Volker RW TI - Design and RF Test of Damped C-Band Accelerating Structures for the ELI-NP Linac J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014 C1 - Dresden, Germany T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - The linac energy booster of the European ELI-NP proposal foresees the use of 12 traveling wave C-Band structures, 1.8 m long with a field phase advance per cell of 2pi/3 and a repetition rate of 100 Hz. Because of the multi-bunch operation, the structures have been designed with a damping of the HOM dipoles modes in order to avoid beam break-up (BBU). They are quasi-constant gradient structures with symmetric inputs couplers and a strong damping of the HOM in each cell. An optimization of the electromagnetic and mechanical design has been done to simplify the fabrication and to reduce their cost. In the paper we shortly review the whole design criteria and we illustrate the low and high power RF test results on prototypes that shown the feasibility of the structure realization and the effectiveness of the HOM damping. PB - JACoW CP - Geneva, Switzerland SP - 3856 EP - 3859 KW - HOM KW - damping KW - operation KW - linac KW - vacuum DA - 2014/07 PY - 2014 SN - 978-3-95450-132-8 DO - 10.18429/JACoW-IPAC2014-THPRI042 UR - http://jacow.org/ipac2014/papers/thpri042.pdf ER -