H^{-} charge-exchange injection without hazardous stripping foils

Abstract

A new scheme of H^{-} charge-exchange injection without stripping foils is proposed. It is composed of a neutralizer of the H^{-} beam using Lorentz stripping, the colliding system of a high power laser and the H^{0} beam to excite H^{0} atoms to the 3P state using the Rabi oscillation, and a magnet to strip the H^{0}(3P) to a proton beam by Lorentz stripping. The necessary laser wavelength, laser power, magnetic-field gradient, and maximum magnetic field are estimated for a beam energy from 1.0 to 3.0 GeV. The result shows that such a scheme is sufficiently feasible for H^{-} beams with an energy discussed here.