Author: Planche, T.
Paper Title Page
MOEPPB003 Status of the PRISM FFAG Design for the Next Generation Muon-to-Electron Conversion Experiment 79
  • J. Pasternak, A. Alekou, M. Aslaninejad, R. Chudzinski, L.J. Jenner, A. Kurup, Y. Shi, Y. Uchida
    Imperial College of Science and Technology, Department of Physics, London, United Kingdom
  • R. Appleby, H.L. Owen
    UMAN, Manchester, United Kingdom
  • R.J. Barlow
    University of Huddersfield, Huddersfield, United Kingdom
  • K.M. Hock, B.D. Muratori
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  • D.J. Kelliher, S. Machida, C.R. Prior
    STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
  • Y. Kuno, A. Sato
    Osaka University, Osaka, Japan
  • J.-B. Lagrange, Y. Mori
    Kyoto University, Research Reactor Institute, Osaka, Japan
  • M. Lancaster
    UCL, London, United Kingdom
  • C. Ohmori
    KEK, Tokai, Ibaraki, Japan
  • T. Planche
    TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
  • S.L. Smith
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
  • H. Witte
    BNL, Upton, Long Island, New York, USA
  • T. Yokoi
    JAI, Oxford, United Kingdom
  The PRISM Task Force continues to study high intensity and high quality muon beams needed for next generation lepton flavor violation experiments. In the PRISM case such beams have been proposed to be produced by sending a short proton pulse to a pion production target, capturing the pions and performing RF phase rotation on the resulting muon beam in an FFAG ring. This paper summarizes the current status of the PRISM design obtained by the Task Force. In particular various designs for the PRISM FFAG ring are discussed and their performance compared to the baseline one, the injection/extraction systems and matching to the solenoid channels upstream and downstream of the FFAG ring are presented. The feasibility of the construction of the PRISM system is discussed.  
MOPPD023 Correction of the nur=3/2 Resonance in TRIUMF Cyclotron 415
  • T. Planche, R.A. Baartman, Y.-N. Rao
    TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
  Imperfections in the TRIUMF cyclotron are a source of field errors which slightly violate the 6-fold symmetry of the ring. Among them, the third harmonic of the magnetic gradient errors drives the νr=3/2 resonance. This results in a modulation of the current density versus radius observed after the resonance crossing all the way to the extraction (480 MeV). The cyclotron has sets of harmonic correction coils at different radii, each set constituted of 6 pairs of coils placed in a 6-fold symmetrical manner. The 6-fold symmetry of this layout makes that a single set of harmonic coils cannot provide a full correction of third harmonic errors driving the νr=3/2 resonance. The last two sets of harmonic correction coils (number 12 and 13) are azimuthally displaced. In this study, we use this fact to achieve a full correction of the resonance. We also present experimental measurements that demonstrate the full correction.