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Bontoiu, C.

Paper Title Page
WEPE060 Investigation of Beam Loading Effects for the Neutrino Factory Muon Accelerator 3479
 
  • J.K. Pozimski, M. Aslaninejad, C. Bontoiu
    Imperial College of Science and Technology, Department of Physics, London
  • J.S. Berg
    BNL, Upton, Long Island, New York
  • S.A. Bogacz
    JLAB, Newport News, Virginia
  • S. Machida
    STFC/RAL/ASTeC, Chilton, Didcot, Oxon
 
 

The IDS study showed that a Neutrino Factory seems to be the most promising candidate for the next phase of high precision neutrino oscillation experiments. A part of the increased precision is due to the fact that in a Neutrino Factory the decay of muons produces a neutrino beam with narrow energy distribution and divergence. The effect of beam loading on the energy distribution of the muon beam in the Neutrino Factory has been investigated numerically. The simulations have been performed using the baseline accelerator design including cavities for different number of bunch trains and bunch train timing. A detailed analysis of the beam energy distribution expected is given together with a discussion of the energy spread produced by the gutter acceleration in the FFAG and the implications for the neutrino oscillation experiments will be presented.

 
THPEB035 Solenoid Fringe Field Effects for the Neutrino Factory Linac - MAD-X Investigation 3963
 
  • M. Aslaninejad, C. Bontoiu, J. Pasternak, J.K. Pozimski
    Imperial College of Science and Technology, Department of Physics, London
  • S.A. Bogacz
    JLAB, Newport News, Virginia
 
 

International Design Study for the Neutrino Factory (IDS-NF) assumes the first stage of muon acceleration (up to 900 MeV) to be implemented with a solenoid based Linac. The Linac consists of three styles of cryo-modules,containing focusing solenoids and varying number of SRF cavities for acceleration. Fringe fields of the solenoids and the focusing effects in the SRF cavities have significant impact on the transverse beam dynamics. Using an analytical formula,the effects of fringe fields and cavities are studied in MAD-X. The resulting betatron functions are compared with the results of beam dynamics simulations using OptiM code.

 
THPE033 Beam Dynamics Studies for the First Muon Linac of the Neutrino Factory 4590
 
  • C. Bontoiu, M. Aslaninejad, J.K. Pozimski
    Imperial College of Science and Technology, Department of Physics, London
  • S.A. Bogacz
    JLAB, Newport News, Virginia
 
 

Within the Neutrino Factory Project the muon acceleration process involves a complex chain of accelerators including a (single-pass) linac, two recirculating linacs and an FFAG. The linac consists of RF cavities and iron shielded solenoids for transverse focusing and has been previously designed relying on idealized field models. However, to predict accurately the transport and acceleration of a high emittance 30 cm wide beam with 10 % energy spread requires detailed knowledge of fringe field distributions. This article presents results of the front-to-end tracking of the muon beam through numerically simulated realistic field distributions for the shielded solenoids and the RF fields. Real and phase space evolution of the beam has been studied along the linac and the results will be presented and discussed.