The Design and Performance of the ZEUS Central Tracking Detector z-by-Timing System by Bailey, D, Carter, R, Foster, B, Harnew, N, Heath, G, Jeffs, MD, Khatri, T, Lancaster, M, Lane, J, McArthur, I, McFall, J, Milborrow, R, Morgado, C, Morrissey, M, Nash, J, Nixon, G, Phillips, D, Postranecky, M, Quinton, S, Shield, P, Topp-Jorgensen, S, Westlake, G, White, D, Wilson, F