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Stable Electron Beams With Low Absolute Energy Spread From a Laser Wakefield Accelerator \nWith Plasma Density Ramp Controlled Injection

Year: 2008
Type: article
Abstract: Laser wakefield accelerators produce accelerating gradients up to hundreds of GeV/m, and recently demonstrated 1-10 MeV energy spread at energies up to 1 GeV using electrons self-trapped from the plasma. Controlled injection and staging may further improve beam quality by circumventing tradeoffs between energy, stability, and energy spread/emittance. We present experiments demonstrating production of a stable electron beam near 1 MeV with hundred-keV level energy spread and central energy stability by using the plasma density profile to control selfinjection, and supporting simulations. Simulations indicate that such beams can be post accelerated to high energies,potentially reducing momentum spread in laser acceleratorsby 100-fold or more.
Authors: Geddes, Cameron G.R., Cormier-Michel, E., Esarey, E., Leemans, W.P., Nakamura, K., Panasenko, D., Plateau, Guillaume R., Schroeder, Carl B., Toth, Csaba, Cary, J.R.
Institutions: Lawrence Berkeley National Laboratory, University of Colorado Boulder, Tech-X Corporation (United States), University of Nevada, Reno, University of California, Berkeley, The University of Tokyo, École Polytechnique
Language: English
Open Access status: green
Awards: IONPACK:IONIZATION PACKAGE FOR INTENSE LASERS AND PLASMA PHYSICS CODES, G122673668, G1286236842, G1677143136, G1863003419, G222768804, G3083819904, CHAOTIC DYNAMICS IN ACCELERATOR PHYSICS, G5076365615, Multi-keV x-ray production by high harmonic generation using ultra-intense lasers, G969889393
OpenAlex ID: W2129473349
FWCI:
Cites: 20
Cited by: 2
Related to: 10