In Situ Measurement of Electron Energy Evolution in a Laser-Plasma Accelerator.

Autor: Bohlen S; Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany.; Universität Hamburg and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany., Brümmer T; Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany., Grüner F; Universität Hamburg and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany., Lindstrøm CA; Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany., Meisel M; Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany.; Universität Hamburg and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany., Staufer T; Universität Hamburg and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany., Streeter MJV; Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany.; Centre for Plasma Physics, School of Mathematics and Physics, Queen's University Belfast, BT7 1NN, Belfast, United Kingdom., Veale MC; UKRI STFC, Rutherford Appleton Laboratory, Didcot, OX11 0QX, United Kingdom., Wood JC; Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany., D'Arcy R; Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany., Põder K; Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany., Osterhoff J; Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany.
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2022 Dec 09; Vol. 129 (24), pp. 244801.
DOI: 10.1103/PhysRevLett.129.244801
Abstrakt: We report on a novel, noninvasive method applying Thomson scattering to measure the evolution of the electron beam energy inside a laser-plasma accelerator with high spatial resolution. The determination of the local electron energy enabled the in-situ detection of the acting acceleration fields without altering the final beam state. In this Letter we demonstrate that the accelerating fields evolve from (265±119)  GV/m to (9±4)  GV/m in a plasma density ramp. The presented data show excellent agreement with particle-in-cell simulations. This method provides new possibilities for detecting the dynamics of plasma-based accelerators and their optimization.
Databáze: MEDLINE
Externí odkaz: