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Owen, H. L.

Paper Title Page
MOPC034 Collective Effects in a Short-Pulse FEL Driver 145
 
  • P. H. Williams, H. L. Owen
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
  • G. Bassi
    Cockcroft Institute, Warrington, Cheshire
  • S. Thorin
    MAX-lab, Lund
  
  There is much interest in the provision of coherent, tunable VUV and soft X-ray pulses of duration less than 10fs. A 1.3 GHz linac driver concept has been developed, and in this paper we address collective effects in the short electron bunches using start-to-end modelling. In particular, we examine the limitations from coherent radiation and induced microbunching, and their impact on the design of the accelerator system.  
MOPC035 PULSE - A High-Repetition-Rate Linac Driver for X-ray FELs 148
 
  • P. H. Williams, B. L. Militsyn, H. L. Owen, M. W. Poole, N. Thompson
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
  • B. W.J. McNeil
    USTRAT/SUPA, Glasgow
  
  We describe a staged concept for a linac-based free-electron laser providing coherent tunable VUV and soft X-ray output with pulse lengths less than 10 fs. Use of recent developments in high brightness injectors and 1.3 GHz cryomodules gives stable, reliable output with very good electron beam quality and flexible pulse pattern. Options for achieving repetition rates up to 1 MHz are examined. We also consider the development and demonstration of novel FEL concepts that access photon pulses in the attosecond regime. The combination of these parameters would open up new areas in femtosecond and attosecond science.  
THPP004 EMMA - the World's First Non-scaling FFAG 3380
 
  • T. R. Edgecock
    STFC/RAL, Chilton, Didcot, Oxon
  • C. D. Beard, J. A. Clarke, C. Hill, S. P. Jamison, A. Kalinin, K. B. Marinov, N. Marks, P. A. McIntosh, B. D. Muratori, H. L. Owen, Y. M. Saveliev, B. J.A. Shepherd, R. J. Smith, S. L. Smith, S. I. Tzenov, E. Wooldridge
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
  • J. S. Berg, D. Trbojevic
    BNL, Upton, Long Island, New York
  • N. Bliss, C. J. White
    STFC/DL, Daresbury, Warrington, Cheshire
  • M. K. Craddock
    UBC & TRIUMF, Vancouver, British Columbia
  • J. L. Crisp, C. Johnstone
    Fermilab, Batavia, Illinois
  • Y. Giboudot
    Brunel University, Middlesex
  • E. Keil
    CERN, Geneva
  • D. J. Kelliher, S. Machida
    STFC/RAL/ASTeC, Chilton, Didcot, Oxon
  • S. R. Koscielniak
    TRIUMF, Vancouver
  • F. Meot
    CEA, Gif-sur-Yvette
  • T. Yokoi
    OXFORDphysics, Oxford, Oxon
  
  EMMA - the Electron Model of Many Applications - is to be built at the STFC Daresbury Laboratory in the UK and will be the first non-scaling FFAG ever constructed. EMMA will be used to demonstrate the principle of this type of accelerator and study their features in detail. The design of the machine and its hardware components are now far advanced and construction is due for completion in summer 2009.