Author: Bartolini, R.
Paper Title Page
MOP011 Status of CLARA, a New FEL Test Facility 49
 
  • J.A. Clarke, D. Angal-Kalinin, A.D. Brynes, R.K. Buckley, S.R. Buckley, L.S. Cowie, D.J. Dunning, B.D. Fell, P. Goudket, A.R. Goulden, P.C. Hornickel, F. Jackson, S.P. Jamison, J.K. Jones, K.B. Marinov, P.A. McIntosh, J.W. McKenzie, K.J. Middleman, B.L. Militsyn, A.J. Moss, B.D. Muratori, M.D. Roper, L.K. Rudge, Y.M. Saveliev, B.J.A. Shepherd, R.J. Smith, S.L. Smith, E.W. Snedden, M. Surman, T.T. Thakker, N. Thompson, R. Valizadeh, A.E. Wheelhouse, P.H. Williams
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
  • R.B. Appleby, K. Hanahoe, O. Mete Apsimon, H.L. Owen, G.X. Xia
    UMAN, Manchester, United Kingdom
  • P. Atkinson, N. Bliss, R.J. Cash, N.A. Collomb, G. Cox, G.P. Diakun, S. Dobson, A. Gallagher, S.A. Griffiths, C. Hill, C. Hodgkinson, D.M.P. Holland, T.J. Jones, B.G. Martlew, J. Williams
    STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom
  • R. Bartolini, I.P.S. Martin
    DLS, Oxfordshire, United Kingdom
  • S.T. Boogert, E. Yamakawa
    Royal Holloway, University of London, Surrey, United Kingdom
  • G. Burt, P.N. Ratoff
    Lancaster University, Lancaster, United Kingdom
  • L.T. Campbell, A.J.T. Colin, J. Henderson, B. Hidding, B.W.J. MᶜNeil
    USTRAT/SUPA, Glasgow, United Kingdom
  • A.M. Kolano
    University of Huddersfield, Huddersfield, United Kingdom
  • A. Lyapin
    JAI, Egham, Surrey, United Kingdom
  • V.V. Paramonov, A.K. Skasyrskaya
    RAS/INR, Moscow, Russia
  • J.D.A. Smith
    TXUK, Warrington, United Kingdom
  • S. Spampinati
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  • Y. Wei, C.P. Welsch, A. Wolski
    The University of Liverpool, Liverpool, United Kingdom
  
  CLARA is a new FEL test facility being developed at STFC Daresbury Laboratory in the UK. The main motivation for CLARA is to test new FEL schemes that can later be implemented on existing and future short wavelength FELs. Particular focus will be on ultra-short pulse generation, pulse stability, and synchronisation with external sources. The project is now underway and the Front End section (photoinjector and first linac) installation will begin later this year. This paper will discuss the progress with the Front End assembly and also highlighting other topics which are currently receiving significant attention.  
Export • reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)  
 
TUP025 Studies of Undulator Tapering for the CLARA FEL 412
 
  • I.P.S. Martin, R. Bartolini
    DLS, Oxfordshire, United Kingdom
  • R. Bartolini
    JAI, Oxford, United Kingdom
  • D.J. Dunning, N. Thompson
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
  
  Undulator tapering is a well-known method for enhancing the performance of free-electron lasers [1]. It works by keeping the resonant wavelength constant, despite variation in the electron beam energy. Both the energy-extraction efficiency and the spectral brightness of the FEL can be improved using this technique. In this paper we present recent studies of undulator tapering for the CLARA FEL in both SASE and seeded modes. The methods used to optimise the taper profile are described, and the properties of the final FEL pulses are compared.
[1] N.M. Kroll, P.L. Morton, M.N. Rosenbluth, J. Quantum Electronics 17, 8 (1981). 		 
poster icon Poster TUP025 [0.919 MB]  
Export • reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)