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Blair, G. A.

Paper Title Page
TUPC011 Micron Size Laser-wire System at the ATF Extraction Line 1065
 
  • A. Aryshev, G. A. Blair, S. T. Boogert, G. E. Boorman, A. Bosco, L. Corner, L. Deacon, N. Delerue, B. Foster, F. Gannaway, D. F. Howell, V. Karataev, L. J. Nevay, M. Newman, R. Senanayake, R. Walczak
    JAI, Oxford
  • H. Hayano, N. Terunuma, J. Urakawa
    KEK, Ibaraki
  
  The ATF extraction line laser-wire system has recently been upgraded allowing the measurement of micron scale transverse size electron beams. We report on the hardware upgrades, including focusing lens, laser and mechanical systems. First measurements using the new system from recent operation at the ATF in KEK are presented.  
TUPC005 Simulation Study of Laser-wires as a Post-linac Diagnostic for CLIC and ILC 1047
 
  • G. A. Blair, L. Deacon, S. Malton
    Royal Holloway, University of London, Surrey
  • I. V. Agapov, A. Latina, D. Schulte
    CERN, Geneva
  
  Realistic CLIC and ILC bunch trains are simulated in the linac, including intra-train collective effects, and then analysed via a realistic simulation of a laser-wire system, including effects of laser-wire signal extraction, detection and deconvolution. Implications are drawn for the use of laser-wires as a post-linac machine diagnostic.  
TUPC123 An Electro-Optic Deflector for a Fast Laser-Wire Scanner 1356
 
  • A. Bosco, G. A. Blair, S. T. Boogert, G. E. Boorman
    Royal Holloway, University of London, Surrey
  
  A large aperture electro-optic deflector has been designed, realized and tested for application on a laser-wire scanner for particle accelerators. Results on the important parameters such as deflection strenght, speed and mode quality preservation are shown and discussed.  
TUPC124 Development of a High Power Fibre Laser for Laser Based Electron Beam Diagnostics 1359
 
  • L. Corner, N. Delerue, M. Newman, R. Walczak
    OXFORDphysics, Oxford, Oxon
  • G. A. Blair, S. T. Boogert
    Royal Holloway, University of London, Surrey
  • L. Corner, D. F. Howell, L. J. Nevay
    JAI, Oxford
  
  We present the latest results on the development of a high power fibre laser system for the laserwire project on ILC-like laser based electron beam diagnostics. The laser consists of a solid state oscillator which can be synchronised to an external frequency reference, and two amplification stages in double clad doped fibre, giving 1uJ pulses in a burst mode suitable for the ATF2 laserwire project. This output is amplified in large mode area photonic crystal fibre to generate the high pulse energy necessary for Compton scattering without any deleterious nonlinear effects, whilst maintaining the high spatial mode quality and beam pointing stability of a fibre laser. These properties are essential for producing the sub-micron spot sizes required for the measurement of small particle beam sizes.  
WEPP158 Simulation of beam Halo in CLIC Collimation Systems 2859
 
  • G. A. Blair, S. Malton
    Royal Holloway, University of London, Surrey
  • I. V. Agapov, A. Latina, D. Schulte
    CERN, Geneva
  
  Full simulation of the CLIC and ILC collimation systems are performed to take account of collimator wakefield effects from the core beam on the halo. In addition full simulation of the interaction of the halo with the collimator material is performed to study the effect of multiple scattering and also the production of neutrons in the electromagnetic showers. The effect of beam-gas scattering downstream of the collimators is also included.