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

AKBP: Arbeitskreis Beschleunigerphysik

AKBP 5: Hadron Accelerators

AKBP 5.1: Vortrag

Dienstag, 21. März 2023, 16:30–16:45, CHE/0184

Broadband laser cooling of stored relativistic bunched ion beams at the ESR — •Sebastian Klammes¹, Lars Bozyk¹, Michael Bussmann^2,3, Noah Eizenhöfer⁴, Volker Hannen⁵, Max Horst⁴, Daniel Kiefer⁴, Nils Kiefer⁶, Thomas Kühl^1,7, Benedikt Langfeld^4,9, Xinwen Ma⁸, Wilfried Nörtershäuser^4,9, Rodolfo Sánchez¹, Ulrich Schramm^3,10, Mathias Siebold², Peter Spiller¹, Markus Steck¹, Thomas Stöhlker^1,7,11, Ken Ueberholz⁵, Thomas Walther^4,9, Hanbing Wang⁸, Weiqiang Wen⁸, Daniel Winzen⁵, and Danyal Winters¹ — ¹GSI Darmstadt — ²HZDR Dresden — ³Casus Görlitz — ⁴TU Darmstadt — ⁵Uni Münster — ⁶Uni Kassel — ⁷HI Jena — ⁸IMP Lanzhou — ⁹HFHF Darmstadt — ¹⁰TU Dresden — ¹¹Uni-Jena

High-precision experiments at heavy-ion storage rings strongly benefit from cold ion beams, i.e. beams with a small relative longitudinal momentum spread (Δp/p) and a small emittance (є). Especially for the higher ion intensities and Lorentz factors (γ) at FAIR (SIS100), laser cooling has proven to be a powerful tool for cooling of relativistic bunched ion beams. The principle is based on resonant absorption (photon momentum & energy) in the longitudinal direction and subsequent spontaneous random emission (fluorescence & ion recoil) by the ions, combined with a moderate bunching of the ion beam. We will report on results from a 2021 laser cooling beamtime at the ESR, where we could demonstrate for the first time broadband laser cooling of relativistic bunched C³⁺ ions using a new pulsed UV laser system with a very high repetition rate, tunable pulse duration, and high power.