21–27 Sept 2025
Hotel Hermitage, La Biodola Bay, Isola d'Elba, Italy
Europe/Rome timezone

Laser fields reconstructor for initialization of experimental laser profiles in Particle In Cell simulations

Not scheduled
1h 30m
Hotel Hermitage, La Biodola Bay, Isola d'Elba, Italy

Hotel Hermitage, La Biodola Bay, Isola d'Elba, Italy

La Biodola Bay - 57037 Portoferraio Isola d’Elba (Li) - Italy
Poster (student) PS4: Theory and simulations Poster Session

Speaker

Federico Avella (Istituto Nazionale di Ottica - CNR)

Description

Particle-in-cell (PIC) simulations are a well-established tool to study and predict the outcomes of a Laser Plasma Accelerator experiment, but the results are often hindered by the initialization of highly idealized laser profiles. In this work, we present the development of a Laser Pulse reconstructor For Particle In Cell simulations (LP4PIC), a Python package to retrieve experimental laser fields to be initialized in a FBPIC simulation. The retrieval of fields from fluence measurements is based on an improved Gerchberg-Saxton algorithm (GSa), taking in input a measurement before the focusing element and a series of focal scan measurements to retrieve the aberration phase. The propagator, on which is based the GSa, simulating the focusing of a given mirror solves the Fourier transformed Helmholtz equation. LP4PIC is also provided with functions to simulate the focusing of an input profile, analytical or from measurements, through phase/absorption plates, eventually providing aberration coefficients, and to give an estimation of aberration coefficients corresponding to the GSa retrieved phase. The so-rebuilt fields are finally initialized in a FBPIC simulation through a proper custom interface. Features and characteristics of LP4PIC will be shown through examples, also in terms of PIC simulations results.

Primary authors

Federico Avella (Istituto Nazionale di Ottica - CNR) Dr Leonida Antonio Gizzi (CNR - INO, and INFN - Sez. di Pisa) Paolo Tomassini (ELI-NP and CNR-INO)

Presentation materials

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