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TY - UNPB AU - Herfurth, F. AU - Andelkovic, Z. AU - Fedotova, S. AU - Geithner, W. AU - Hess, R. AU - Horst, M. AU - Krantz, C. AU - Lestinsky, M. AU - Nörtershäuser, W. AU - Rausch, S. AU - Reiter, A. AU - Roßbach, J. AU - Stallkamp, N.S. AU - Trotsenko, S. AU - Vorobyev, G. AU - Zhou, B. ED - Tranquille, Gérard Alain ED - Schaa, Volker RW ED - Petit-Jean-Genaz, Christine ED - Jørgensen, Lars Varming TI - Heavy, Highly-charged Ions at GSI/FAIR Decelerated and Cooled J2 - presented at COOL2023, Montreux, Switzerland, 08-13 October 2023 CY - Montreux, Switzerland T2 - International Workshop on Beam Cooling and Related Topics T3 - 14 LA - english AB - At GSI/FAIR heavy, highly charged ions for precision experiments are stripped at high energy and then slowed down in steps and cooled. Final deceleration to about 1 MeV/u is done in a dedicated low-energy storage ring. For this, the existing storage ring CRYRING, has been transferred from Stockholm to Darmstadt, refurbished and taken into operation. The CRYRING@ESR facility is in routine operation now providing ions for experiments either via the ESR but also from a local ECR ion source. Major challenges are the detection of weak and slow ion beams and the vacuum conditions. To get well below 1 MeV/u ion beam energy, a linear decelerator in conjunction with a Penning trap, HITRAP, has been built and partly commissioned. After deceleration to only a few eV/nucleon electron cooling and resistive cooling shall be applied. Electron cooling is relatively unexplored in Penning traps. However, a first interaction of simultaneously stored electrons with highly-charged ions has been detected in the HITRAP cooling trap recently. Further investigation and especially an improved alignment eventually lead to first signs of electron cooling of highly-charged ions in a Penning trap. ER -