Results of calculations on the beam deflection due to the 1 MHz chopper for the kaon factory

Deflection rise time is a function of beam transit time through the deflector plates and the rise time of the stored voltage pulse. The authors present the results of time-domain mathematical simulations to assess the relationship between these quantities: the results of these simulations allow an accurate determination of the required rise-time of the stored voltage pulse. The representation of the deflector plates is modified so that linear displacement of the beam, as well as angular deflection, may be assessed. Simulations have also been performed to assess the attenuating effect of the deflector plates upon both angular deflection and linear displacement of the H/sup -/ beam caused by voltage ripple. A measured voltage pulse is simulated as driving the deflector plates, and beam deflection is predicted.<>