Plasma density characterization at SPARC_LAB through Stark broadening of Hydrogen spectral lines

F. Filippi*, M. P. Anania, M. Bellaveglia, A. Biagioni, E. Chiadroni, A. Cianchi, D. Di Giovenale, G. Di Pirro, M. Ferrario, A. Mostacci, L. Palumbo, R. Pompili, V. Shpakov, C. Vaccarezza, F. Villa, A. Zigler

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Plasma-based acceleration techniques are of great interest for future, compact accelerators due to their high accelerating gradient. Both particle-driven and laser-driven Plasma Wakefield Acceleration experiments are foreseen at the SPARC_LAB Test Facility (INFN National Laboratories of Frascati, Italy), with the aim to accelerate high-brightness electron beams. In order to optimize the efficiency of the acceleration in the plasma and preserve the quality of the accelerated beam, the knowledge of the plasma electron density is mandatory. The Stark broadening of the Hydrogen spectral lines is one of the candidates used to characterize plasma density. The implementation of this diagnostic for plasma-based experiments at SPARC_LAB is presented.

Bibliographical note

Publisher Copyright:
© 2016 Elsevier B.V.

Keywords

  • Plasma diagnosis
  • Plasma spectroscopy
  • Stark effect

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