Plasma-based laser pulse control techniques for laser wakefield accelerators

Abstract Achieving high quality electron beams in laser wakefield accelerators requires stable guiding of the intense driving laser pulse, which is challenging because of mode mismatching due to relativistic self-focusing. Here we show how an intense pre-pulse can be used to prepare the phase-space distribution of plasma electrons encountered by a trailing laser pulse so that it produces its own well-matched guiding channel, while minimising wakefield evolution. Controlling the propagation of high intensity laser pulses is an essential step in developing useful wakefield accelerators and compact radiation sources.

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Plasma guiding using a chaperone pre-pulse for stable wakefield generation

10.21203/rs.3.rs-679840/v2 ◽

2021 ◽

Author(s):

Devki N. Gupta ◽

Samuel R. Yoffe ◽

Arohi Jain ◽

Bernhard Ersfeld ◽

Dino A. Jaroszynski

Keyword(s):

Laser Pulse ◽

Laser Pulses ◽

Space Distribution ◽

Essential Step ◽

Self Focusing ◽

Radiation Sources ◽

High Intensity Laser ◽

Laser Wakefield ◽

Intensity Laser ◽

Wakefield Accelerators

Abstract Achieving high quality electron beams in laser wakefield accelerators requires stable guiding of the intense driving laser pulse, which is challenging because of mode mismatching due to relativistic self-focusing. Here we show how an intense pre-pulse can be used to prepare the phase-space distribution of plasma electrons encountered by a trailing laser pulse so that it produces its own well-matched guiding channel, while minimising wakefield evolution. Controlling the propagation of high intensity laser pulses is an essential step in developing useful wakefield accelerators and compact radiation sources.

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Optimal laser pulse shaping in Laser Wakefield Accelerators

10.1063/1.58852 ◽

1999 ◽

Cited By ~ 2

Author(s):

Pisin Chen ◽

Anatoly Spitkovsky

Keyword(s):

Laser Pulse ◽

Pulse Shaping ◽

Laser Wakefield ◽

Laser Pulse Shaping ◽

Wakefield Accelerators

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Laser pulse-electron beam synergy effect on electron self-injection and higher energy gain in laser wakefield accelerators

Scientific Reports ◽

10.1038/s41598-020-79556-9 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Sahar Barzegar ◽

Ali Reza Niknam

Keyword(s):

Electron Beam ◽

Laser Pulse ◽

Pulse Electron Beam ◽

Energy Gain ◽

Lower Plasma ◽

Beam Position ◽

Laser Wakefield ◽

Strong Deformation ◽

Bubble Regime ◽

Wakefield Accelerators

AbstractA new scheme for injection and acceleration of electrons in wakefield accelerators is suggested based on the co-action of a laser pulse and an electron beam. This synergy leads to stronger wakefield generation and higher energy gain in the bubble regime. The strong deformation of the whole bubble leads to electron self-injection at lower laser powers and lower plasma densities. To predict the practical ranges of electron beam and laser pulse parameters an interpretive model is proposed. The effects of altering the initial electron beam position on self-trapping of plasma electrons are studied. It is observed that an ultra-short (25 fs), high charge (340 pC), 1 GeV electron bunch is produced by injection of a 280 pC electron beam in the decelerating phase of the 75 TW laser driven wakefield.

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