The FLASHForward facility at DESY by Aschikhin, A, Behrens, C, Bohlen, S, Dale, J, Delbos, N, di Lucchio, L, Elsen, E, Erbe, J, Felber, M, Foster, B, Goldberg, L, Grebenyuk, J, Gruse, J, Hidding, B, Hu, Z, Karstensen, S, Knetsch, A, Kononenko, O, Libov, V, Ludwig, K, Maier, A, de la Ossa, A, Mehrling, T, Palmer, C, Pannek, F, Schaper, L, Schlarb, H, Schmidt, B, Schreiber, S, Schwinkendorf, J, Steel, H, Streeter, M, Tauscher, G, Wacker, V, Weichert, S, Wunderlich, S, Zemella, J, Osterhoff, J