Development and operating experience of a short-period superconducting undulator at the Advanced Photon Source oleh Y. Ivanyushenkov, K. Harkay, M. Abliz, L. Boon, M. Borland, D. Capatina, J. Collins, G. Decker, R. Dejus, J. Dooling, C. Doose, L. Emery, J. Fuerst, J. Gagliano, Q. Hasse, M. Jaski, M. Kasa, S. H. Kim, R. Kustom, J. C. Lang, J. Liu, E. Moog, D. Robinson, V. Sajaev, K. Schroeder, N. Sereno, Y. Shiroyanagi, D. Skiadopoulos, M. Smith, X. Sun, E. Trakhtenberg, I. Vasserman, A. Vella, A. Xiao, J. Xu, A. Zholents, E. Gluskin, V. Lev, N. Mezentsev, V. Syrovatin, V. Tsukanov, A. Makarov, J. Pfotenhauer, D. Potratz