Die DPG-Frühjahrstagung in Dresden musste abgesagt werden! Lesen Sie mehr ...

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

AKBP: Arbeitskreis Beschleunigerphysik

AKBP 8: New Accelerator Concepts

AKBP 8.3: Vortrag

Dienstag, 17. März 2020, 15:00–15:15, HSZ 301

Minimizing betatron coupling of energy spread and divergence in laser-wakefield accelerated electrons — •Alexander Köhler¹, Richard Pausch¹, Jurjen Pieter Couperus Cabadag¹, Omid Zarini¹, Yen-Yu Chang¹, Thomas Kurz^1,2, Susanne Schöbel^1,2, Michael Bussmann¹, Alexander Debus¹, Ulrich Schramm^1,2, and Arie Irman¹ — ¹Helmholtz-Zentrum Dresden - Rossendorf — ²Technische Universität Dresden

Matched beam loading in laser wakefield acceleration (LWFA) flattens the accelerating electric field along the bunch and leads to the minimization of energy spread at high bunch charges. By using the self-truncated ionization injection scheme for controlling the injected charge, we demonstrate that minimal energy spread coincides with a reduction of the normalized beam divergence. Betatron radiation spectroscopy simultaneously confirms a constant beam radius at the plasma exit. Together, the decrease in divergence can be attributed to the reduction of chromatic betatron decoherence. Thus, beam loading enables the highest longitudinal and transverse phase space densities by optimizing energy spread and normalized divergence.