BEGIN:VCALENDAR
VERSION:2.0
METHOD:PUBLISH
CALSCALE:GREGORIAN
PRODID:-//WordPress - MECv6.2.0//EN
X-ORIGINAL-URL:https://loa.ensta-paris.fr/
X-WR-CALNAME:Laboratoire d'Optique Appliquée
X-WR-CALDESC:UMR 7639
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-PUBLISHED-TTL:PT1H
X-MS-OLK-FORCEINSPECTOROPEN:TRUE
BEGIN:VEVENT
CLASS:PUBLIC
UID:MEC-281715cafa675bf359ebaa42cb44fa17@loa.ensta-paris.fr
DTSTART:20240328T100000Z
DTEND:20240328T110000Z
DTSTAMP:20231106T124600Z
CREATED:20231106
LAST-MODIFIED:20240325
PRIORITY:5
TRANSP:OPAQUE
SUMMARY:Lorenzo MARTELLI, UPX group, LOA: Average Current Enhancement of Laser-Plasma Accelerators
DESCRIPTION:Laser-plasma accelerators have demonstrated remarkable capabilities in generating high-energy electron beams exceeding 1 GeV, driven by hundreds-TW laser systems. However, many practical applications necessitate higher average beam currents rather than elevated energies. Moreover, in fields like industrial X-ray tomography, there’s a pressing need to control maximum energy outputs due to radiation safety considerations. In this seminar, we delve into an underexplored acceleration regime aimed at enhancing average beam currents at a few MeV. Utilizing Particle-in-Cell (PIC) simulations, we provide a detailed analysis of the acceleration processes, highlighting Ponderomotive Acceleration (PA) and Direct Laser Acceleration (DLA) as primary mechanisms. We leverage simulations to interpret experimental findings, exploring electron beam properties across varying laser energies and plasma densities. Our investigations yield promising results, with measured charges of up to ∼30 nC and a maximum energy conversion efficiency exceeding 20%.\n
URL:https://loa.ensta-paris.fr/fr/events/lorenzo-martelli-upx-group-loa-2/
CATEGORIES:Seminaire doctorant
LOCATION:LOA
END:VEVENT
END:VCALENDAR