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Santucci, J. K.

Paper Title Page
MOPAS017 Upgrade of the A0 Photoinjector Laser System for NML Accelerator Test Facility at Fermilab 470
 
  • J. Ruan, H. Edwards, R. P. Fliller, J. K. Santucci
    Fermilab, Batavia, Illinois
 
  Funding: Operated by Universities Research Association, Inc. for the U. S. Department of Energy under contract DE-AC02-76CH03000

The current Fermilab A0 Photoinjector laser system includes a seed laser, a flashlamp pumped multipass amplifier cavity, a flashlamp pumped 2-pass amplifier system followed by an IR to UV conversion stage. However the current system can only deliver up to 800 pulses due to the low efficiency of Nd:Glass used inside multi-pass cavity. In this paper we will report the effort to develop a new multi pass cavity based on Nd:YLF crystal end-pumped by diode laser. We will also discuss the foreseen design of the laser system for the NML accelerator test facility at Fermilab.

 
WEOAKI02 Observations of Underdense Plasma Lens Focusing of Relativistic Electron Beams 1907
 
  • M. C. Thompson, M. C. Thompson
    LLNL, Livermore, California
  • H. Badakov, J. B. Rosenzweig, R. Tikhoplav, G. Travish
    UCLA, Los Angeles, California
  • R. P. Fliller, G. M. Kazakevich, J. K. Santucci
    Fermilab, Batavia, Illinois
  • J. L. Li
    Rochester University, Rochester, New York
  • P. Piot
    Northern Illinois University, DeKalb, Illinois
 
  Funding: This work was performed under the auspices of the US Department of Energy under Contract No. DE-FG03-92ER40693 and W-7405-ENG-48.

Focusing of a 15 MeV, 19 nC electron bunch by an underdense plasma lens operated just beyond the threshold of the underdense condition has been demonstrated in experiments at the Fermilab NICADD Photoinjector Laboratory (FNPL). The strong 1.9 cm focal-length plasma-lens focused both transverse directions simultaneously and reduced the minimum area of the beam spot by a factor of 23. Analysis of the beam-envelope evolution observed near the beam waist shows that the spherical aberrations of this underdense lens are lower than those of an overdense plasma lens, as predicted by theory. Correlations between the beam charge and the properties of the beam focus corroborate this conclusion. Time resolved measurements of the focused electron bunch are also reported and all results are compared to simulations.

 
slides icon Slides  
THPMN097 Envelope and Multi-slit Emittance Measurements at Fermilab A0-Photoinjector and Comparison with Simulations 2936
 
  • C. M. Bhat, J.-P. Carneiro, R. P. Fliller, G. M. Kazakevich, J. K. Santucci
    Fermilab, Batavia, Illinois
 
  Funding: Operated by Universities Research Association, Inc. for the U. S. Department of Energy under contract DE-AC02-76CH03000.

Recently we have measured the transverse emittance using both multi-screen as well as muli-slit methods for a range of electron beam intensities from 1 nC to 4 nC at A0 Photoinjector facility at Fermilab. The data have been taken with un-stacked 2.5 ps laser pulse. In this paper we report on these measurements and compare the results with the predictions from beam dynamics calculations using ASTRA and General Particle Tracer including 3D space charge effects.