• M. Lechartier, D. Besnier, R. Beunard, J.F. Leyge, M. Michel, P. Robillard, P. Toussaint
  GANIL, Caen

Three normal conducting rebunchers are located in the MEBT line of the SPIIRAL2 driver.  The cavity are designed for a beta of 0.04, work at 88 MHz and have to supply beam voltages up to 120 kV in continuous mode or up to 190 kV in  pulsed mode with 50%dutycycle. The  paper describes the  RF measurements and first results

• P. Balleyguier
  CEA, Bruyères-le-Châtel
• P. Bertrand, M. Di Giacomo, G. Fremont, M. Michel
  GANIL, Caen

The high current driver accelerator of the SPIRAL 2 project uses a single-bunch selector to reduce the bunch repetition rate at the experimental target. The device works at almost 1 MHz and handles fast RF pulses of 18 ns with transient times shorter than 6 ns. The first electrode prototype, built in the framework of the Eurisol DS project, was used for thermal and RF tests and didn't show correct delay and matching. The paper describes the studies to improve these two important issues and the results of thermal tests