Author: Stoehlker, T.     [Stöhlker, T.]
Paper Title Page
MOPPD009 Stochastic Cooling Developments for HESR at FAIR 388
  • H. Stockhorst, R. Maier, D. Prasuhn, R. Stassen
    FZJ, Jülich, Germany
  • C. Dimopoulou, A. Dolinskii, T. Katayama, Yu.A. Litvinov, M. Steck, T. Stöhlker
    GSI, Darmstadt, Germany
  The High-Energy Storage Ring (HESR) is part of the upcoming International Facility for Antiproton and Ion Research (FAIR) at GSI in Darmstadt. The HESR is planned to dedicate to the field of high-energy antiproton physics to explore the research areas of charmonium spectroscopy, hadronic structure, and quark-gluon dynamics with high-quality beams over a broad momentum range from 1.5 to 15 GeV/c. The new facility provides the combination of powerful phase-space cooled antiproton beams and internal Pellet and gas jet targets to achieve the requirements of the experiment PANDA in terms of beam quality and luminosity. Detailed theoretical analyses have been carried out to design the stochastic cooling system for accumulation and stochastic cooling of antiprotons with target operation. Recently it is proposed to utilize the HESR also for the atomic and nuclear physics with highly charged heavy ions such as 132Sn50+ in the dedicated experiments at high energies 0.74-3 GeV/u. In this contribution the feasibility of stochastic cooling of heavy ions with internal targets is in detail investigated under the constraint of the cooling system hardware as foreseen for anti-proton cooling.  
THPPP002 Operation of the HESR Storage Ring of the FAIR Project with Ions and Rare Isotopes 3722
  • M. Steck, C. Dimopoulou, A. Dolinskii, T. Katayama, Yu.A. Litvinov, T. Stöhlker
    GSI, Darmstadt, Germany
  • R. Maier, D. Prasuhn, H. Stockhorst
    FZJ, Jülich, Germany
  The HESR storage ring of the FAIR project is designed for experiments with cooled antiprotons. The HESR receives pre-cooled antiprotons from the Collector Ring CR which is also designed for cooling of rare isotope beams. The magnetic rigidity of 13 Tm is the same for the pre-cooling of antiprotons and rare isotopes in the CR. Therefore the transfer of ions or rare isotopes from the CR to the HESR can be performed under similar condition, except the different polarity of the magnetic components. This is an option for the first stage of the FAIR project when no other storage ring is available for experiments with stored ions. In the HESR the ions can be decelerated or accelerated, like the antiprotons, to energies corresponding to the magnetic rigidity range from 5 to 50 Tm. The planned beam cooling systems of the HESR, stochastic and electron cooling, can be applied to improve the quality of the ion beams in the HESR and support experiments using an internal target or the accumulation of rare isotope beams in the HESR. Scenarios for operating the HESR with ions and rare isotopes as well as achievable performance, beam intensity and quality for internal experiments will be discussed.