Would it be possible to convert our assorted cyclotrons, linear accelerators and particle colliders to emit a directable stream of particles?

Would it be possible to convert our assorted cyclotrons, linear accelerators and particle colliders to emit a directable stream of particles?
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answer:Hmm, actually converting existing accelerators? That sounds highly impractical. However there are nuke-powered ion-propulsion drives designed to do just that, toss particles out the back end at extreme speeds, exchanging momentum with the spacecraft (acceleration). “Propelling light sails” ... but the light sails are a propulsion system themselves. They catch solar wind. If you direct a beam from a spacecraft onto light sails on the same craft I don’t think you’ll have a net gain of momentum.
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