A superconducting magnet upgrade of the ATF2 final focus by Parker, B, Anerella, M, Escallier, J, He, P, Jain, A, Marone, A, Wanderer, P, Wu, K, Hauviller, C, Marin, E, Tomas, R, Zimmermann, F, Bolzon, B, Jeremie, A, Kimura, N, Kubo, K, Kume, T, Kuroda, S, Okugi, T, Tauchi, T, Terunuma, N, Tomaru, T, Tsuchiya, K, Urakawa, J, Yamamoto, A