Electron injection on steep ramp-up plasma density profiles in high repetition rate laser-plasma wake-field accelerators

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00370829" target="_blank" >RIV/68407700:21340/23:00370829 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1117/12.2660115" target="_blank" >https://doi.org/10.1117/12.2660115</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2660115" target="_blank" >10.1117/12.2660115</a>

Result language

angličtina

Original language name

Electron injection on steep ramp-up plasma density profiles in high repetition rate laser-plasma wake-field accelerators

Original language description

Electron acceleration by laser pulses with high repetition rate can be used for technical applications. To reach conditions for the wake-field laser acceleration, it was demonstrated recently in experiments that it is beneficial to use near single cycle laser drive pulses with sub-4 fs duration, with narrow waists. To explore possible electron density ramp-up injection as an alternative to ramp-down and ionization injections, we performed numerical simulations of electron bunches generation in the ramp-up region. The PIC code Epoch2D and input parameters near to experiments were used. We assumed thin plasma slabs with super Gaussian density profiles of order 4-80, FWHM about 30 μm. We found that density ramp-up injected bunches can have charges several times higher than those obtained by ionization injection. There can be created a group of up to ten bunches in a sequence of bubbles, with not too mutually different maximum energy and charges. At oblique incidence of drive pulses on steep ramp up profiles, we find significant enhancement of the first bunch charge. For large slant angles -45 or 45 degrees, the bunch charge enhancement is about twenty times. We conclude that the ramp-up injection can be a useful alternative injection on steep enough density profiles. 2023 SPIE.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proc. SPIE 12579, Laser Acceleration of Electrons, Protons, and Ions VII

ISBN

978-1-5106-6278-0

ISSN

0277-786X

e-ISSN

1996-756X

Number of pages

5

Pages from-to

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Publisher name

SPIE

Place of publication

Bellingham (stát Washington)

Event location

Praha

Event date

Apr 24, 2023

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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