30TW chirped pulse amplification using the VULCAN high power Nd:glass laser by Danson, C, Barzanti, L, Ebbage, M, Edwards, C, Gander, M, Key, M, Neely, D, Norreys, P, Pepler, D, Rivers, S, Taday, P, Toner, W, Winstone, T, Walsh, F, Barr, J