RF Power Test of the Rebuncher for Saraf-Linac

Lu Zhao (1) , Romain Berthier (1) , Rémi Braud (1) , Didier Chirpaz-Cerbat (1) , Marco Di Giacomo (2) , Jonathan Dumas (1) , Romuald Duperrier (1) , Francis Gohier (1) , Francoise Gougnaud (1) , Patrice Guiho (1) , Tom Joannem (1) , Boaz Kaizer , Sébastien Ladegaillerie (1) , Jean-François Leyge (2) , Claude Marchand (1) , Matthieu Michel (2) , Olivier Piquet (1) , Nicolas Solenne (1) , Didier Uriot (1) , Leonid Weissman , Xiaowen Zhu (1)

1 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
2 GANIL - Grand Accélérateur National d'Ions Lourds

Three normal conducting rebunchers will be installed at the Medium Energy Beam Transport (MEBT) of the SARAF-LINAC phase II [saraf]. The MEBT line is designed to follow a 1.3 MeV/u RFQ, is about 5 m long, and contains three 176 MHz rebunchers providing a field integral of 10⁵ kV. CEA is in charge of the design and fabrication of the Cu plated stainless steel, 3-gap rebuncher. The high power tests and RF conditioning have been successfully performed at the CEA Saclay on the first cavity. A solid state power amplifier, which has been developed by SNRC and has been used for the RF tests. The cavity has shown a good performance according to calculations, regarding the dissipated power, peak temperatures and coupling factor. RF conditioning was started with a duty cycle of 1\% and increased gradually until continuous wave (CW), which is the nominal working mode in SARAF-LINAC.

Mots clés: cavity; EPICS; controls; linac; MEBT

Domaines: Physique des accélérateurs [physics.acc-ph]

Lu Zhao, Romain Berthier, Rémi Braud, Didier Chirpaz-Cerbat, Marco Di Giacomo, et al.. RF Power Test of the Rebuncher for Saraf-Linac. 10th International Particle Accelerator Conference, May 2019, Melbourne, Australia. pp.WEPRB010, ⟨10.18429/JACoW-IPAC2019-WEPRB010⟩. ⟨hal-02266347⟩