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Yokoi, T.

Paper Title Page
THPMN082 Beam Injection Into EMMA Non-scaling FFAG 2898
 
  • T. Yokoi
    OXFORDphysics, Oxford, Oxon
  • S. Machida
    STFC/RAL/ASTeC, Chilton, Didcot, Oxon
  
  FFAG accelerators have been getting attention as promising candidates for the muon accelerators of a neutrino factory due to their large transverse acceptance and the capability of fast particle acceleration. Non-scaling FFAGs, which are a variation of FFAGs, are nowadays being intensively studied for their simple structure and operational flexibility. To demonstrate the technical feasibility of non-scaling FFAGs and to investigate their beam dynamics, a project to construct a small electron non-scaling FFAG (EMMA) has been proposed in the UK. In EMMA the injection and extraction energies must be arbitrarily changed for a beam with emittance of 3 mm to study the beam dynamics in detail for the entire range of operating energy. In addition, in the planned machine the betatron tunes vary more than a factor of two during acceleration. The requirement of variable injection or extraction energy requires careful optimisation of the of injection elements and operational conditions. The details and design status of the scheme will be described in this paper.  
THPMN076 PAMELA - A Model for an FFAG based Hadron Therapy Machine 2880
 
  • J. K. Pozimski
    Imperial College of Science and Technology, Department of Physics, London
  • R. J. Barlow
    UMAN, Manchester
  • J. Cobb, T. Yokoi
    OXFORDphysics, Oxford, Oxon
  • B. Cywinski
    University of Leeds, Leeds
  • T. R. Edgecock
    STFC/RAL, Chilton, Didcot, Oxon
  • A. Elliott
    Beatson Institute for Cancer Research, Glasgow
  • M. Folkard, B. Vojnovic
    Gray Cancer Institute, Northwood, Middlesex
  • I. S.K. Gardner
    STFC/RAL/ISIS, Chilton, Didcot, Oxon
  • B. Jones
    University Hospital Birmingham, Edgbaston, Birmingham
  • K. Kirkby, R. Webb
    UOSIBS, Guildford
  • G. McKenna
    University of Oxford, Oxford
  • K. J. Peach
    JAI, Oxford
  • M. W. Poole
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
  
  Approximately one third of the world?s 15000 accelerators are used for tumour therapy and other medical applications. Most of these are room temperature cyclotrons: a few are synchrotrons. Neither of these have ideal characteristics for a dedicated medical accelerator. The characteristics of FFAGs make them ideally suited to such applications, as the much smaller magnet size, greater compactness and variable energy offers considerable cost and operational benefits especially in a hospital setting. In the first stage the work on PAMELA will focus on the optimization of the FFAG design to deliver the specific machine parameters demanded by therapy applications. In this phase of the PAMELA project the effort will concentrate on the design of a semi-scaling type FFAGs to deliver a 450 MeV/u carbon ion beam, including detailed lattice and tracking studies. The second stage will use the existing expertise in the BASROC consortium to undertake a design of the magnets and RF system for PAMELA. An outline of the overall concept of PAMELA will be discussed and the actual status of the work will be presented.