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Neuffer, D. V.

Paper Title Page
THPMN106 Use of Harmonics in RF Cavities in Muon Capture for a Neutrino Factory or Muon Collider 2957
  • D. V. Neuffer, C. Y. Yoshikawa
    Fermilab, Batavia, Illinois
  • R. P. Johnson
    Muons, Inc, Batavia
  Funding: Supported in part by DOE STTR grant DE-FG02-05ER86252

Common to various front end designs for a muon collider or neutrino factory are costly low frequency RF cavities used to bunch muons. In this paper we show that adding higher harmonic RF cavities to the bunching section of a muon capture channel can provide as good or better bunching efficiency than the case where only the fundamental is used. Since higher harmonic cavities are less expensive to build and operate, this approach implies significant cost savings.

THPMS090 A Complete Scheme of Ionization Cooling for a Muon Collider 3193
  • R. B. Palmer, J. S. Berg, R. C. Fernow, J. C. Gallardo, H. G. Kirk
    BNL, Upton, Long Island, New York
  • Y. Alexahin, D. V. Neuffer
    Fermilab, Batavia, Illinois
  • S. A. Kahn
    Muons, Inc, Batavia
  • D. J. Summers
    UMiss, University, Mississippi
  Funding: Work Supported by the United States Department of Energy, Contract No. DE-AC02-98CH10886.

We propose a complete scheme for cooling a muon beam for a muon collider. We first outline the parameters required for a multi-TeV muon collider. The cooling scheme starts with the front end of the Study 2a proposed Neutrino Factory. This yields bunch trains of both muon signs. Emittance exchange cooling in upward climbing helical lattices then reduces the longitudinal emittance until it becomes possible to combine the trains into single bunches, one of each sign. Further cooling is now possible in emittance exchange cooling rings. Final cooling to the required parameters is achieved in 50 T solenoids that use high temperature superconductor. Preliminary simulations of each element will be presented.