Continuous synchronization scheme for TRIUMF KAON Factory Booster and Collector by heterodyne with intermediate frequency

摘要

Often it arises that several batches of protons must be transferred in box-car fashion from a Booster to Main Ring synchrotron. When the combination (i) large change in kinematic (beta), (ii) (gamma)-transition close to (gamma)-beam, (iii) small radial aperture confining (Delta)p/p(sub s) steering, and (iv) absence of magnetic flat top, occur in the Booster, then conventional phase slip methods of synchronization become infeasible. An alternative is to heterodyne the Booster revolution frequency with an intermediate frequency (of predetermined phase variation) so as to produce a signal equal to a harmonic of the main ring revolution frequency. This allows elaboration of a synchronization control. This paper describes computer modelling of the synchronization technique, as applied to the KAON Factory Booster and Collector, including the effects of error sources and beam-control loops. 4 figs. (Atomindex citation 27:056617)