Cary, J.R.

Dugan, G.

Esarey, E.

Faure, J.

Fubiani, G.

Geddes, C.G.R.

Giacone, R.

Leemans, W.P.

Nieter, C.

Schroeder, C.B.

Shadwick, B.A.

Tilborg, J. van

Toth, C.

English

eScholarship - University of California

Lawrence Berkeley National LaboratoryRecent WorkTitleLaser triggered injection using colliding pulsesPermalinkhttps://escholarship.org/uc/item/4ss85915AuthorsFaure, J.Leemans, W.P.Geddes, C.G.R.et al.Publication Date2002-12-04eScholarship.org Powered by the California Digital LibraryUniversity of CaliforniaLaser triggered injection using colliding pulsesJ. Faure, W.P. Leemans, C.G.R. Geddes, C. Toth, J. Van Tilborg, E. Esarey, C.B.Schroeder, G. Fubiani, B.A. Shadwick, and W.P. Leemans, LBNLG. Dugan, Cornell UniversityJ.R. Cary, R. Giacone, C. Nieter, U. ColoradoLaser driven acceleration in plasmas has succeeded in producing electron beamscontaining multi-nC's of charge, with some fraction of the electrons having energies inexcess of 10's of MeV's but 100 % energy spread.  One of the current challenges is toproduce electron beams with much reduced energy spread.  We report on experimentalprogress in the laser triggered injection of electrons in a laser wakefield accelerator usingthe colliding pulse method [1],[2].  The experiments use the l'OASIS multi-beam 10 Hzhigh power Ti:Al2O3 laser system [3].   In the present experiments, two counterpropagating beams 30˚ angle are focused onto a high density gas jet.  Preliminary resultsindicate that electron beam properties are affected by the second beam.  Details of theexperiments will be shown as well as comparisons with simulations.  This worksupported by DoE under contract No DE-AC-03-76SF0098.  C. Geddes acknowledgessupport from the Hertz Foundation.[1] E. Esarey et al., Phys.  Rev.  Lett.  79, 2682 (1997).[2] C.B. Schroeder et al., Phys.  Rev.  E 59, 6037 (1999).[3] W.P. Leemans et al., Phys. Rev. Lett. 89, 174802 (2002).

Laser triggered injection using colliding pulses

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Laser triggered injection using colliding pulses

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