Abstract
The beam dynamics during the period of H − charge-exchange injection is analyzed in detail. The formulas to calculate the beam characteristics at the end of this period, such as the hitting probability of protons on the charge-stripping foil, momentum distribution, injection efficiency and emittance are deduced. These formulas include the space charge effect and can be applied to a high intensity beam. The beam characteristics were measured in the KEK Booster Synchrotron by changing the injection energy, thickness of the stripping foil, duration and the injection timing of the chopped H − ion beam. The calculated results are in good agreement with the measurements.
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