Experiments on electron injection in the PBWA at NEPTUNE Facility*

Details Experiments on electron injection in the PBWA at NEPTUNE Facility* Experiments on electron injection in the PBWA at NEPTUNE Facility*

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..dpplo2009t&link_type=abstract

American Physical Society, 44th Annual Meeting of the Division of Plasma , abstract #LO2.009

Physics

Scientific paper

The Neptune Laboratory at UCLA is being used to explore advanced accelerator concepts including plasma beat wave acceleration (PBWA) of electrons. Here the plasma beatwave is driven by a 100 ps two-wavelength TW CO2 laser pulse. 2D-PIC simulations indicate that the plasma wave amplitude around 10-20could be achieved at resonant density 10^16 cm-3. Longitudinal relativistic plasma waves excited by TW 10-μm pulses are detected and studied by collinear Thomson scattering with a green optical probe beam. For PBWA, electrons from the photoinjector are injected in a plasma accelerating structure. The injected electron beam comes from an RF gun followed by a linac which can produce up to 0.5 nC in several ps at 12 MeV. We study waveÐparticle interactions by injecting electrons into plasma waves with different transverse and longitudinal dimensions for F/3 and F/18 laser beam focusing. In phase II of PBWA experiments phase-locked electrons prebunched at the scale of the plasma wavelength will be used for acceleration.

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