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Modelling of pulse train generation for resonant laser wakefield acceleration using a delay mask

  Articoli su Riviste JCR/ISI  (anno 2018)

Autori:  Vantaggiato G., Labate L., Tomassini P., Gizzi LA

Affiliazione Autori:  CNR, Intense Laser Irradiat Lab, INO, Pisa, Italy; Ist Nazl Fis Nucl, Sez Pisa, Pavia, Italy.

Riassunto:  A new method for the generation of a train of pulses from a single high-energy, ultra short pulse is presented, suited for Resonant Multi-Pulse Ionization injection (Tomassini, 2017). The method is based on different transverse portion of the pulse being delayed by a "mask'' sectioned in concentric zones with different thicknesses, in order to deliver multiple laser pulses. The mask is placed right before the last focusing parabola. A hole in the middle of the mask lets part of the original pulse to pass through to drive electron injection. In this paper a full numerical modelling of this scheme is presented. In particular we discuss the spatial and temporal profile of the pulses emerging from the mask and how they are related to the radius and thickness of each section.

Rivista/Giornale:  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume n.:  909      Pagine da: 114  a: 117
DOI: 10.1016/j.nima.2018.02.024


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