title: A fast feedback controlled magnetic drive for the ASDEX Upgrade fast-ion loss detectors.
abstract: A magnetically driven fast-ion loss detector system for the ASDEX Upgrade tokamak has been designed and will be presented here. The device is feedback controlled to adapt the detector head position to the heat load and physics requirements. Dynamic simulations have been performed taking into account effects such as friction, coil self-induction, and eddy currents. A real time positioning control algorithm to maximize the detector operational window has been developed. This algorithm considers dynamical behavior and mechanical resistance as well as measured and predicted thermal loads. The mechanical design and real time predictive algorithm presented here may be used for other reciprocating systems.
authors.affiliation: Department of Atomic, Molecular and Nuclear Physics, Faculty of Physics, University of Seville, 41012 Seville, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Ayllon-Guerola
authors.affiliation: Department of Atomic, Molecular and Nuclear Physics, Faculty of Physics, University of Seville, 41012 Seville, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Gonzalez-Martin
authors.affiliation: Department of Atomic, Molecular and Nuclear Physics, Faculty of Physics, University of Seville, 41012 Seville, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Garcia-Munoz
authors.affiliation: Department of Atomic, Molecular and Nuclear Physics, Faculty of Physics, University of Seville, 41012 Seville, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Rivero-Rodriguez
authors.affiliation: Max-Planck-Institut für Plasmaphysik, Garching, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Herrmann
authors.affiliation: Max-Planck-Institut für Plasmaphysik, Garching, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Vorbrugg
authors.affiliation: Max-Planck-Institut für Plasmaphysik, Garching, Germany.
authors.forename: P
authors.initials: P
authors.lastname: Leitenstern
authors.affiliation: Wigner RCP, Budapest, Hungary.
authors.forename: S
authors.initials: S
authors.lastname: Zoletnik
authors.affiliation: Department of Atomic, Molecular and Nuclear Physics, Faculty of Physics, University of Seville, 41012 Seville, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Galdon
authors.affiliation: Department of Atomic, Molecular and Nuclear Physics, Faculty of Physics, University of Seville, 41012 Seville, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Garcia Lopez
authors.affiliation: Department of Atomic, Molecular and Nuclear Physics, Faculty of Physics, University of Seville, 41012 Seville, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Rodriguez-Ramos
authors.affiliation: Department of Atomic, Molecular and Nuclear Physics, Faculty of Physics, University of Seville, 41012 Seville, Spain.
authors.forename: L
authors.initials: L
authors.lastname: Sanchis-Sanchez
authors.affiliation: Department of Atomic, Molecular and Nuclear Physics, Faculty of Physics, University of Seville, 41012 Seville, Spain.
authors.forename: A D
authors.initials: AD
authors.lastname: Dominguez
authors.affiliation: ITER Organization, Route de Vinon sur Verdon, 13115 St Paul Lez Durance, France.
authors.forename: M
authors.initials: M
authors.lastname: Kocan
authors.affiliation: CEA, IRFM, F-13108 Saint Paul Lez Durance, France.
authors.forename: J P
authors.initials: JP
authors.lastname: Gunn
authors.affiliation: ETSI, University of Seville, 41092 Seville, Spain.
authors.forename: D
authors.initials: D
authors.lastname: Garcia-Vallejo
authors.affiliation: ETSI, University of Seville, 41092 Seville, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Dominguez