Enhanced proton beam collimation in the ultra-intense short pulse regime

J.S. Green, N.P. Dover, M. Borghesi, C.M. Brenner, F.H. Cameron, D.C. Carroll, P.S. Foster, P. Gallegos, G. Gregori, P. McKenna, C.D. Murphy, Z. Najmudin, C.A.J. Palmer, R. Prasad, L. Romagnani, K.E. Quinn, J. Schreiber, M.J.V. Streeter, S. Ter-Avetisyan, O. TrescaM. Zepf, D. Neely