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Effects of the channel radius on the direct laser acceleration of positrons
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SYSNO ASEP 0584199 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Effects of the channel radius on the direct laser acceleration of positrons Author(s) Mašlárová, Dominika (UFP-V)
Martinez, B. (PT)
Vranic, M. (PT)Number of authors 3 Article number 1258003 Source Title Proceedings of SPIE - The International Society for Optical Engineering. - Bellingham : SPIE, 2023 - ISBN 978-151066552-1 Pages roč. 12580 (2023) Number of pages 5 s. Publication form Online - E Action Research Using Extreme Light: Entering New Frontiers with Petawatt-Class Lasers V Event date 24.04.2023 - 25.04.2023 VEvent location Praha Country CZ - Czech Republic Event type WRD Language eng - English Country US - United States Keywords positrons ; laser ; plasma Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) R&D Projects EF18_053/0016925 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EF16_019/0000778 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Research Infrastructure e-INFRA CZ - 90140 - CESNET, zájmové sdružení právnických osob Method of publishing Limited access Institutional support UFP-V - RVO:61389021 EID SCOPUS 85171734157 DOI 10.1117/12.2665637 Annotation 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 laserplasma 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. © 2023 SPIE. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2024 Electronic address https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12580/2665637/Effects-of-the-channel-radius-on-the-direct-laser-acceleration/10.1117/12.2665637.short
Number of the records: 1