Now showing items 11-19 of 19

  • 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 ...