Author: Magdau, I.-B.
Paper Title Page
THPWO076 Design Study for 10 MHz Beam Frequency of Post-accelerated RIBs at HIE-ISOLDE 3933
 
  • M.A. Fraser, R. Calaga, I.-B. Magdau
    CERN, Geneva, Switzerland
 
  An increased bunch spacing of approximately 100 ns is requested by several research groups targeting experimental physics at HIE-ISOLDE. A design study testing the feasibility of retrofitting the existing 101.28 MHz REX (Radioactive ion beam EXperiment) RFQ with a sub-harmonic external pre-buncher at the ISOLDE radioactive nuclear beam facility has been carried out as a means of decreasing the beam frequency by a factor of 10. The proposed scheme for the 10 MHz bunch repetition frequency is presented and its performance assessed with beam dynamics simulations. The opportunity to reduce the longitudinal emittance formed in the RFQ is discussed along with the options for chopping the satellite bunches populated in the bunching process.