A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   R   S   T   U   V   W   Y    

Rydberg, A.

Paper Title Page
PT18 Development of a bunch frequency monitor for the preliminary phase of the CLIC Test Facility CTF3 211
 
  • A. Ferrari, A. Rydberg
    UUS, Uppsala University, Sweden
  • F. Caspers, R. Corsini, L. Rinolfi, F. Tecker
    CERN, Geneva, Switzerland
  • P. Royer
    UNIL, Université de Lausanne, Switzerland
 
  In the framework of the CLIC RF power source studies, the feasibility of the bunch train combination by injection with RF deflectors into an isochronous ring has been successfully demonstrated in the preliminary phase of CTF3. In order to monitor this scheme, a new method based on beam frequency spectrum analysis was experimented. For this purpose, a coaxial pick-up and its detection system were designed and mounted in the CTF3 ring, in order to allow comparison of the amplitudes of five harmonics of the fundamental beam frequency (3 GHz) while combining bunch trains. The commissioning of the monitor was a successful proof of principle for this new method, despite the short length of the bunch trains and the presence of parasitic signals associated to high-order wave guide modes propagating with the beam inside the pipe.