| Published Articles | |
| Report number | CERN-ACC-2016-0050 |
| Title | Localization of ionization-induced trapping in a laser wakefield accelerator using a density down-ramp |
| Author(s) | Hansson, M. (Lund U.) ; Audet, T. L. (LPGP, Orsay) ; Ekerfelt, H. (Lund U.) ; Aurand, B. (Lund U.) ; Gallardo Ganzalez, I. (Lund U.) ; Desforges, F. G. (LPGP, Orsay) ; Davoine, X. (CEA DAM) ; Maitrallain, A. (Saclay) ; Reymond, S. (Lund U. ; ENSTA, Paris) ; Monot, P. (Saclay) ; Persson, A. (Lund U.) ; Dobosz Dufrénoy S. (Saclay) ; Wahlström C-G. (Lund U.) ; Cros, B. (LPGP, Orsay) ; Lundh, O. (Lund U.) |
| Publication | 2016 |
| Imprint | 2016-03-23 |
| In: | Plasma Phys. Control. Fusion 58 (2016) 055009 |
| DOI | 10.1088/0741-3335/58/5/055009 |
| Subject category | Accelerators and Storage Rings ; 13: Novel Acceleration Techniques (ANAC2) ; 13.2: Achievement of high brightness electron beam with laser plasma accelerators |
| Abstract | We report on a study on controlled trapping of electrons, by field ionization of nitrogen ions, in laser wakefield accelerators in variable length gas cells. In addition to ionization-induced trapping in the density plateau inside the cells, which results in wide, but stable, electron energy spectra, a regime of ionization-induced trapping localized in the density down-ramp at the exit of the gas cells, is found. The resulting electron energy spectra are peaked, with 10% shot-to-shot fluctuations in peak energy. Ionization-induced trapping of electrons in the density down-ramp is a way to trap and accelerate a large number of electrons, thus improving the efficiency of the laser-driven wakefield acceleration. |
| Copyright/License | CC-BY |
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Record created 2016-05-23, last modified 2017-08-31
