Now showing items 1-19 of 19

  • Benchmarking of electro-optic monitors for femtosecond electron bunches 

    Berden, G.; Gillespie, W. A.; Jamison, S. P.; Knabbe, E. A.; MacLeod, Allan M.; van der Meer, A. F. G.; Phillips, P. J.; Schlarb, H.; Schmidt, B.; Schmuser, P.; Steffen, B. (American Physical Society, 2007-10)
    The longitudinal profiles of ultrashort relativistic electron bunches at the soft x-ray free-electron laser FLASH have been investigated using two single-shot detection schemes: an electro-optic (EO) detector measuring the ...
  • Electro-optic bunch diagnostics on ALICE 

    Phillips, P. J.; Gillespie, W. A.; Jamison, S. P.; MacLeod, Allan M. (Joint Accelerator Conferences Website, 2009)
    An electro-optic longitudinal bunch profile monitor has been implemented on ALICE (Accelerators and Lasers in Combined Experiments) at the Daresbury Laboratories and will be used both to characterise the electron bunch and ...
  • Electro-optic technique with improved time resolution for real-time, nondestructive, single-shot measurements of femtosecond electron bunch profiles 

    Berden, G.; Jamison, S. P.; MacLeod, Allan M.; Gillespie, W. A.; Redlich, B.; van der Meer, A. F. G. (American Physical Society, 2004-09)
    Electro-optic detection of the Coulomb field of a relativistic electron bunch combined with single-shot cross correlation of optical pulses is used to enable single-shot measurements of the shape and length of femtosecond ...
  • Electro-optic techniques for longitudinal electron bunch diagnostics 

    Berden, G.; van der Meer, A. F. G.; Jamison, S. P.; Steffen, B.; Schmidt, B.; Schmüser, P.; MacLeod, Allan M.; Gillespie, W. A.; Phillips, P. J. (2008)
    Electro-optic techniques are becoming increasingly important in ultrafast electron bunch longitudinal diagnostics and have been successfully implemented at various accelerator laboratories. The longitudinal bunch shape is ...
  • Electro-optic techniques for temporal profile characterisation of relativistic Coulomb fields and coherent synchrotron radiation 

    Jamison, S. P.; Berden, G.; MacLeod, Allan M.; Jaroszynski, D. A.; Redlich, B.; van der Meer, A. F. G.; Gillespie, W. A. (Elsevier, 2006-02)
    Electro-optic (EO) detection of relativistic Coulomb fields offers a method for non-destructive longitudinal profile measurements of ultrashort bunches. Techniques for single-shot EO characterisation of Coulomb fields which ...
  • Electro-optic time profile monitors for femtosecond electron bunches at the soft x-ray free-electron laser FLASH 

    Steffen, B.; Arsov, V.; Berden, G.; Gillespie, W. A.; Jamison, S. P.; MacLeod, Allan M.; van der Meer, A. F. G.; Phillips, P. J.; Schlarb, H.; Schmidt, B.; Schmüser, P. (American Physical Society, 2009-03)
    Precise measurements of the temporal profile of ultrashort electron bunches are of high interest for the optimization and operation of ultraviolet and x-ray free-electron lasers. The electro-optic (EO) technique has been ...
  • Electron beam quality measurements on the ALPHA-X laser-plasma wakefield accelerator 

    Welsh, G. H.; Anania, M. P.; Aniculaesei, C.; Brunetti, D.; Burgess, R. T. L.; Cipiccia, S.; Clark, D.; Ersfeld, B.; Islam, M. R.; Issac, R. C.; Manahan, G. G.; McCanny, T.; Raj, G.; Reitsma, A. J. W.; Shanks, R. P.; Vieux, G.; Wiggins, S. M.; Jaroszynski, D. A.; Gillespie, W. A.; MacLeod, Allan M.; van der Geer, S. B.; de Loos, M. J. (Joint Accelerator Conferences Website, 2010-06)
    The Advanced Laser-Plasma High-Energy Accelerators towards X-rays (ALPHA-X) programme at the University of Strathclyde is developing laser-plasma wakefield accelerators to produce high energy, ultra-short duration electron ...
  • High quality electron beams from a laser wakefield accelerator 

    Wiggins, S. M.; Issac, R. C.; Welsh, G. H.; Brunetti, E.; Shanks, R. P.; Anania, M. P.; Cipiccia, S.; Manahan, G. G.; Aniculaesei, C.; Ersfeld, B.; Islam, M. R.; Burgess, R. T. L.; Vieux, G.; Gillespie, W. A.; MacLeod, Allan M.; van der Geer, S. B.; de Loos, M. J.; Jaroszynski, D. A. (Institute of Physics, 2010-12)
    High quality electron beams have been produced in a laser-plasma accelerator driven by femtosecond laser pulses with a peak power of 26 TW. Electrons are produced with an energy up to 150 MeV from the 2 mm gas jet accelerator ...
  • High quality electron beams from a laser wakefield accelerator 

    Wiggins, S. M.; Shanks, R. P.; Issac, R. C.; Welsh, G. H.; Anania, M. P.; Brunetti, E.; Vieux, G.; Cipiccia, C.; Ersfeld, B.; Islam, M. R.; Burgess, R. T. L.; Manahan, G.; Aniculaesei, C.; Gillespie, W. A.; MacLeod, Allan M.; Jaroszynski, D. A. (Optical Society of America, 2010-07-01)
    Very stable, high quality electron beams (current ~ 10 kA, energy spread < 1%, emittance ~ 1π mm mrad) have been generated in a laser-plasma accelerator driven by 25 TW femtosecond laser pulses.
  • The Internet of Things – The future or the end of mechatronics 

    Bradley, David A.; Russell, David; Ferguson, R. Ian; Isaacs, John; MacLeod, Allan M.; White, Roger (Elsevier, 2015-03-18)
    The advent and increasing implementation of user configured and user oriented systems structured around the use of cloud configured information and the Internet of Things is presenting a new range and class of challenges ...
  • Longtitudinal electron beam diagnostics via upconversion of THz to visible radiation 

    Berden, G.; van der Meer, A. F. G.; Jamison, S. P.; MacLeod, Allan M.; Gillespie, W. A.; Phillips, P. J. (2009)
    Longitudinal electro-optic electron bunch diagnostics has been successfully applied at several accelerators. The electro-optic effect can be seen as an upconversion of the Coulomb field of the relativistic electron bunch ...
  • Narrow spread electron beams from a laser-plasma wakefield accelerator 

    Wiggins, S. M.; Anania, M. P.; Brunetti, E.; Cipiccia, S.; Ersfeld, B.; Islam, M. R.; Issac, R. C.; Raj, G.; Shanks, R. P.; Vieux, G.; Welsh, G. H.; Gillespie, W. A.; MacLeod, Allan M.; Jaroszynski, D. A. (SPIE, 2009)
    The Advanced Laser-Plasma High-Energy Accelerators towards X-rays (ALPHA-X) programme is developing laserplasma accelerators for the production of ultra-short electron bunches with subsequent generation of incoherent ...
  • Single shot longitudinal bunch profile measurements by temporally resolved electro-optical detection 

    Phillips, P. J.; Gillespie, W. A.; Steffen, B.; Knabbe, E-A.; Schmidt, B.; Schmüser, P.; Jamison, S. P.; Berden, G.; van der Meer, A. F. G.; MacLeod, Allan M. (Joint Accelerator Conferences Website, 2007)
    For the high gain operation of a SASE FEL, extremely short electron bunches are essential to generate sufficiently high peak currents. At the superconducting linac of FLASH at DESY, we have installed an electro- optic ...
  • Single-shot electron-beam bunch length measurements 

    Wilke, I.; MacLeod, Allan M.; Gillespie, W. A.; Berden, G.; Knippels, G. M. H.; van der Meer, A. F. G. (American Physical Society, 2002-03)
    We report subpicosecond electro-optic measurements of the length of individual relativistic electron bunches. The longitudinal electron-bunch shape is encoded electro-optically on to the spectrum of a chirped laser pulse. ...
  • Single-shot longitudinal bunch profile measurements at FLASH using electro-optic detection: Experiment, simulation and validation 

    Steffen, B.; Knabbe, E. A.; Schlarb, H.; Schmidt, B.; Schmuser, P.; Gillespie, W. A.; Phillips, P. J.; Jamison, S. P.; Berden, G.; van der Meer, A. F. G.; MacLeod, Allan M. (Joint Accelerator Conferences Website, 2007)
    At the superconducting linac of FLASH at DESY, we have installed an electro-optic (EO) experiment for singleshot, non-destructive measurements of the longitudinal electric charge distribution of individual electron bunches. ...
  • Single-shot longitudinal bunch profile measurements at FLASH using electro-optic detection: experiment, simulation, and validation. 

    Steffen, B.; Knabbe, E-A.; Schlarb, H.; Schmidt, B.; Schmüser, P.; Gillespie, W. A.; Phillips, P. J.; Jamison, S. P.; Berden, G.; van der Meer, A. F. G.; MacLeod, Allan M. (2007)
    At the superconducting linac of FLASH at DESY, we have installed an electro-optic (EO) experiment for single- shot, non-destructive measurements of the longitudinal electric charge distribution of individual electron ...
  • Temporally resolved electro-optic effect 

    Jamison, S. P.; MacLeod, Allan M.; Berden, G.; Jaroszynski, D. A.; Gillespie, W. A. (Optical Society of America, 2006-06)
    The electro-optic effect between an ultrafast optical probe pulse and an ultrashort terahertz pulse is shown to depend on the time derivatives of the product of the probe and the terahertz electric fields. Application of ...
  • An ultrashort pulse ultra-violet radiation undulator source driven by a laser plasma wakefield accelerator 

    Anania, M. P.; Brunetti, E.; Wiggins, S. M.; Grant, D. W.; Welsh, G. H.; Issac, R. C.; Cipiccia, S.; Shanks, R. P.; Manahan, G. G.; Aniculaesei, C.; van der Geer, S. B.; de Loos, M. J.; Poole, M. W.; Shepherd, B. J. A.; Clarke, J. A.; Gillespie, W. A.; MacLeod, Allan M.; Jaroszynski, D. A. (American Institute of Physics (AIP), 2014-06-30)
    Narrow band undulator radiation tuneable over the wavelength range of 150–260 nm has been produced by short electron bunches from a 2 mm long laser plasma wakefield accelerator based on a 20 TW femtosecond laser system. ...
  • Upconversion of a relativistic Coulomb field terahertz pulse to the near infrared 

    Jamison, S. P.; Berden, G.; Phillips, P. J.; Gillespie, W. A.; MacLeod, Allan M. (American Institute of Physics, 2010-06-10)
    We demonstrate the spectral upconversion of a unipolar subpicosecond terahertz (THz) pulse, where the THz pulse is the Coulomb field of a single relativistic electron bunch. The upconversion to the optical allows remotely ...