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Apollonio, M.

Paper Title Page
WEPE052 Optimization of the MICE Muon Beam Line 3461
 
  • M. Apollonio
    Imperial College of Science and Technology, Department of Physics, London
  • M.A. Rayner
    OXFORDphysics, Oxford, Oxon
 
 

In the Muon Ionization Cooling Experiment (MICE) at RAL muons are produced and transported in a dedicated beamline connecting the production point (target) to the diffuser, a mechanism inside the first spectrometer solenoid designed to inflate the initial normalized emittance up to 10 mm rad in a controlled fashion. In order to match the incoming muons to the downstream experiment, covering all the possible values of the emittance-momentum matrix, an optimisation procedure has been devised which is based upon a genetic algorithm coupled to the tracking code G4Beamline. Details of beamline tuning and initial measurements are discussed.

 
WEPE053 Muon Polarimeter in a Neutrino Factory Decay Ring 3464
 
  • M. Apollonio
    Imperial College of Science and Technology, Department of Physics, London
  • A.P. Blondel
    DPNC, Genève
  • D.J. Kelliher
    STFC/RAL/ASTeC, Chilton, Didcot, Oxon
 
 

Monitoring the muon beam properties in the final stage of the Neutrino Factory (the Decay Ring) is important for the understanding of the beam itself and a crucial piece of information for the downstream physics detectors. The main topics to be assessed are: knowledge of the muon beam energy, divergence of the muon beam and muon beam current. In the framework of the International Design Study for the Neutrino Factory (IDS-NF) a Race Track model Decay Ring based on G4beamline has been produced to understand how electrons from muon decays can be used to infer the energy properties of the beam via the spin depolarisation technique. The use of other codes, like Zgoubi, to generate a realistic beam including effects like spin polarisation, are considered. A general discussion on the remaining topics is presented.

 
WEPE054 The MICE Muon Beam: Status and Progress 3467
 
  • A.J. Dobbs, M. Apollonio, K.R. Long, J. Pasternak
    Imperial College of Science and Technology, Department of Physics, London
  • D.J. Adams
    STFC/RAL/ISIS, Chilton, Didcot, Oxon
 
 

The international Muon Ionisation Cooling Experiment (MICE) is designed to provide a proof of principal of the ionisation cooling technique proposed to reduce the muon beam phase space at a future Neutrino Factory or Muon Collider. The pion production target is a titanium cylinder that is dipped into the proton beam of the Rutherford Appleton Laboratory's ISIS 800 MeV synchrotron. Studies of the particle rate in the MICE muon beam are presented as a function of the beam loss induced in ISIS by the MICE target. The implications of the observed beam loss and particle rate on ISIS operation and MICE data taking is discussed.