Erlangen 2022 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 21: Highly charged ions and their applications

A 21.4: Poster

Mittwoch, 16. März 2022, 16:30–18:30, P

Laser Cooling of Relativistic Ion Beams Employing a Transportable Pulsed UV Laser System — •Benedikt Langfeld¹, Lars Bozyk², Michael Bussmann^3,4, Noah Eizenhöfer¹, Volker Hannen⁵, Max Horst¹, Daniel Kiefer¹, Nils Kiefer⁶, Sebastian Klammes², Thomas Kühl^2,7, Markus Löser³, Xinwen Ma⁸, Wilfried Nörtershäuser¹, Rodolfo Sanchez², Ulrich Schramm^3,9, Mathias Siebold³, Peter Spiller², Markus Steck², Thomas Stöhlker^2,7,10, Ken Ueberholz⁵, Thomas Walther^1,11, Hanbing Wang⁷, Weiqiang Wen⁷, and Danyal Winters² — ¹TU Darmstadt — ²GSI Darmstadt — ³HZDR Dresden — ⁴CASUS Görlitz — ⁵Uni Münster — ⁶Uni Kassel — ⁷HI Jena — ⁸IMP Lanzhou — ⁹TU Dresden — ¹⁰Uni Jena — ¹¹HFHF Ffm

Laser cooling of relativistic ion beams has been shown to be a promising technology to generate bright ion beams. To strongly reduce intrabeam scattering, a well-known problematic effect for high-intensity ion beams, pulsed laser systems with broad bandwidths can be employed.

In this work, we present preliminary results from a recent (May 2021) laser cooling "beam experiment" at the ESR storage ring at GSI Helmholtzzentrum Darmstadt, employing relativistic C³⁺ ion beams and our tuneable high repetition rate UV laser system. We have developed a transportable master-oscillator-power-amplifier system, supplying Fourier transform limited pulses with a continuously adjustable pulse duration between 50 and 735 ps and repetition rate of 1 to 10 MHz. With two SHG stages, the desired wavelength of 257.25 nm can be achieved, yielding > 200 mW during the beam experiment.