R. Battesti (1), B. Beltran (2), H. Davoudiasl (3), M. Kuster (4), P.
  Pugnat (5), R. Rabadan (6), A. Ringwald (7), N. Spooner (8), K. Zioutas (9),
  ((1) Laboratoire National des Champs Magn\'etiques Puls\'es, (2) Queen's
  University, (3) University of Wisconsin, (4) TU Darmstadt, (5) CERN, (6)
  Institute for Advanced Study, (7) DESY, (8) University of Sheffield, (9)
  University of Patras)