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TY - UNPB AU - Winters, D.F.A. AU - Birkl, G. AU - Bozyk, L.H.J. AU - Buss, A. AU - Bussmann, M.H. AU - Chen, D.Y. AU - Eizenhöfer, N. AU - Hannen, V. AU - Horst, M. AU - Huang, Z. AU - Kiefer, D. AU - Kiefer, N. AU - Klammes, S. AU - Kühl, T. AU - Langfeld, B. AU - Löser, M. AU - Ma, X. AU - Nörtershäuser, W. AU - Sanchez Alarcon, R.M. AU - Schramm, U. AU - Siebold, M. AU - Spiller, P.J. AU - Steck, M. AU - Stöhlker, T. AU - Ueberholz, K. AU - Walther, T. AU - Wang, H.B. AU - Weinheimer, C. AU - Wen, W.Q. AU - Winzen, D. ED - Kuzin, Maxim TI - Laser Cooling of Stored Relativistic Ions Using a New Pulsed UV Laser System (Very High Repetition Rate, Variable Pulse Duration, More Power) J2 - Proc. of COOL2021, Novosibirsk, Russia, 01-05 November 2021 CY - Novosibirsk, Russia T2 - Workshop on Beam Cooling and Related Topics T3 - 13 LA - english AB - We present our new (but still preliminary) results from a recent test beamtime for laser cooling of carbon ions (12C³⁺ @ 122 MeV/u) at the ESR. In May 2021, GSI kindly offered us the possibility to test the new pulsed UV laser system from the TU Darmstadt, which has a very high repetition rate (10 MHz), a variable pulse duration (70 - 740 ps) and more power (up to 250 mW). We have demonstrated laser cooling using this laser and present results for different laser pulse durations (166 - 740 ps). In addition, we could test the improved moveable in-vacuo fluorescence detection system from Münster University. Finally, we could also demonstrate our new ion bunch - laser pulse timing scheme and observe clear delay effects. PB - JACoW Publishing CP - Geneva, Switzerland ER -