Optimal laser pulse shaping in Laser Wakefield Accelerators

Journal Article · Mon Jul 12 04:00:00 EDT 1999 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.58852· OSTI ID:21205372

Pisin, Chen ^[1]; Spitkovsky, Anatoly ^[2]

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1. Stanford Linear Accelerator Center, Stanford University, Stanford, California 94305 (United States)
2. Department of Physics, University of California at Berkeley, Berkeley, California 94720 (United States)

We show that, in analogy to the electron beam driven Plasma Wakefield Accelerator (PWFA), an optimal transformer ratio can be attained in the laser driven Laser Wakefield Accelerator (LWFA), by properly shaping the longitudinal profile of the driving laser pulse. The concept of transformer ratio is introduced for accelerating scheme comprised of different particle species, and then applied to LWFA. The optimal laser pulse shape is derived under general conditions including the nonlinear regime of laser-plasma interaction. We show that, while the scaling for optimal transformer ratio is the same in the nonlinear regime, the corresponding laser intensity distribution is different from that for the electron beam. However, when our nonlinear result is reduced to the linear regime of plasma perturbation, the requirement for the laser pulse shape, which we previously derived, is identical to that for the electron beam.

• OSTI ID: 21205372
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 472; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM DYNAMICS
BEAM-PLASMA SYSTEMS
DISTURBANCES
ELECTRON BEAMS
LASER RADIATION
LASERS
NONLINEAR PROBLEMS
PLASMA
PULSE SHAPERS
PULSES
RELATIVISTIC RANGE
TRANSFORMERS
WAKEFIELD ACCELERATORS