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Q: Fachverband Quantenoptik und Photonik
Q 49: Poster – Photonics, Lasers, and Applications
Q 49.33: Poster
Mittwoch, 12. März 2025, 17:00–19:00, Tent
Status of Laser Cooling at the FAIR SIS100 — •Denise Schwarz1, Jens Gumm1, Benedikt Langfeld1, Tamina Grunwitz1, Danyal Winters2, Sebastian Klammes2, and Thomas Walther1,3 — 1TU Darmstadt — 2GSI Darmstadt — 3HFHF Darmstadt
Bunched relativistic ion beams with a narrow momentum distribution are essential for precision experiments at modern accelerator facilities. Laser cooling presents a promising approach to further reduce the relative momentum distribution of such ion beams.
Previous experiments at the Experimental Storage Ring (ESR) at GSI have demonstrated the effectiveness of both continuous-wave (cw) and pulsed UV laser in minimizing the relative momentum distribution of bunched relativistic ion beams. To enhance cooling performance, a novel approach of integrating three laser systems - one cw and two pulsed lasers - has been proposed for application at the FAIR SIS100 accelerator. Successful implementation of this strategy requires the optimization of spatial, temporal, and energy overlap between the three laser beams and the ion beam.
This work explores the principles of laser cooling with a multi-laser configuration, with a particular emphasis on achieving precise spatial overlap between the laser and ion beams. Additionally, the critical role of active laser beam stabilization in ensuring consistent overlap is addressed.
Keywords: Laser cooling; UV laser; Relativistic ion beams; Accelerator physics