26–31 Jul 2026
Luskin Conference Center, UCLA
US/Pacific timezone

Experimental demonstration of Flying-Focus enhanced Thomson scattering

30 Jul 2026, 09:15
30m
Ballroom (Luskin Conference Center)

Ballroom

Luskin Conference Center

Invited plenary Invited Talks

Speaker

Elias Gerstmayr (Queen's University Belfast)

Description

We report the experimental demonstration of a spatiotemporally engineered “chromatic Flying-Focus” laser pulse to enhance x-ray generation in relativistic Thomson scattering. Precise tuning of the group delay dispersion was used to match the velocity of the focus to the trajectory of a counter-propagating laser-wakefield-accelerated electron beam. This extended the Thomson-scattering interaction, leading to an enhanced x-ray yield. This approach allows for maximising the spectral density and brightness of the x-ray beam by orders of magnitude compared to equivalent focusing without chromatic control.

Working group WG6

Author

Elias Gerstmayr (Queen's University Belfast)

Co-authors

Cristina Mariani (DESY) Rebecca Herbst (University of Michigan) Matthew VanDusen-Gross (LLE) Curtis Berger (LBNL) Qiang Chen (LBNL) Antonino Di Piazza (LLE) Martin Stack Formanek (ELI Beamlines) Dustin Froula (LLE) Cameron Geddes (LBNL) Anthony Gonsalves (Lawrence Berkeley national laboratory) Ben Greenwood (LBNL) Robert Jacob (LBNL) Anthony Lu (LBNL) Aodhan McIlvenny (LBNL) Kei Nakamura (LBNL) Lieselotte Obst-Huebl (LBNL) John Palastro (LLE) Alex Picksley (LBNL) Kristjan Põder (Deutsches Elektronen Synchtrotron DESY) Dillon Ramsey (LLE) Hans Rinderknecht (LLE) Gianluca Sarri (Queen's University Belfast) Alexander Thomas (university of michigan) Jeroen van Tilborg Matthew Streeter (Queen's University Belfast)

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