Effects of the channel radius on the direct laser acceleration of positrons

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00368192" target="_blank" >RIV/68407700:21340/23:00368192 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1117/12.2665637" target="_blank" >https://doi.org/10.1117/12.2665637</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.2665637" target="_blank" >10.1117/12.2665637</a>

Result language
angličtina
Original language name
Effects of the channel radius on the direct laser acceleration of positrons
Original language description
Plasma acceleration has been lately considered to become an auspicious technology for building a future multi-TeV electron-positron collider, leading to higher compactness of the device. Self-generated fields from laser-plasma interaction are, however, in contrast to electrons, usually not well-suited for positron focusing and on-axis guiding. In addition, an external positron source is required. Here, we study the method of direct laser acceleration of positrons. The positron generation is assured by an orthogonal collision of a multi-PW laser pulse and a GeV electron beam by the nonlinear Breit-Wheeler process. The acceleration subsequently takes place in a preformed plasma channel with a finite (tens-of-microns-long) radius. In this work, we examine how the choice of channel radius influences the process of acceleration. We show that this scheme is robust regarding the radius size. A significant number of the positrons is kept near the propagation axis, even if the channel radius was increased by almost 100 µm. The mechanism was examined by quasi-3D particle-in-cell simulation carried out with the OSIRIS framework.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proc. SPIE 12580, Research Using Extreme Light: Entering New Frontiers with Petawatt-Class Lasers V
ISBN
978-1-5106-6280-3
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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