[en] The method is proposed allowing to eliminate parametric build up of particle oscillations the case of exact coincidence of the betatron oscillation frequency ν with one of resonance values νsub(R) and 2π/M times narrowing of the parametric resonance region for near-by values of νsub(R), where M is the number of gradient periods and ν is the number of oscillations per the gradient period
Original Title
Oslablenie parametricheskoj raskachki kolebanij chastits v kol'tsevykh uskoritelyakh