The practical Pomeron for high energy proton collimation R. B. Appleby, R. J. Barlow, J. G. Molson, M. Serluca and A. Toader Eur. Phys. J. C, 76 10 (2016) 520 Published online: 26 September 2016 DOI: 10.1140/epjc/s10052-016-4363-7