Author: Skorobogatov, D.N.
Paper Title Page
MOXAUD01
 Performance of the 2 MeV Electron Cooler at COSY  
 
  • V. Kamerdzhiev, A.J. Halama, R. Stassen, H. Stockhorst
    FZJ, Jülich, Germany
  • M.I. Bryzgunov, V.V. Parkhomchuk, V.B. Reva, D.N. Skorobogatov
    BINP SB RAS, Novosibirsk, Russia
  • T. Katayama
    Nihon University, Narashino, Chiba, Japan
  
  The 2 MeV electron cooler is operated in the COSY ring since 2013. So far electron beam energy up to 1.5 MeV was demonstrated. Dedicated electron cooling studies with proton beams up to 1.66 GeV kinetic energy and electron beam current up to 0.9 A were carried out. A reduction of proton beam emittance by one order of magnitude within a few hundred seconds was observed. Overview of HV and electron beam commissioning activities is presented. Electron cooling results are discussed.  
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TUPF08 High Efficiency Electron Collector for the High Voltage Electron Cooling System of COSY 112
 
  • M.I. Bryzgunov, A.V. Bubley, V.A. Chekavinskiy, I.A. Gusev, A.V. Ivanov, M.N. Kondaurov, V.M. Panasyuk, V.V. Parkhomchuk, D.N. Pureskin, A.A. Putmakov, V.B. Reva, D.V. Senkov, D.N. Skorobogatov
    BINP SB RAS, Novosibirsk, Russia
  • V.B. Reva
    NSU, Novosibirsk, Russia
  
  A high efficiency electron collector for the COSY high voltage electron cooling system was developed. The main feature of the collector is usage of special insertion (Wien filter) before the main collector, which deflects secondary electron flux to special secondary collector, preventing them fly to the electrostatic tube. In first tests of the collector in COSY cooler efficiency of recuperation better then 10-5 was reached. Before assembling of the cooler in Jülich upgrades of the collector and electron gun were made. After the upgrade efficiency better then 10-6 was reached. Design and testing results of the collector are described.  
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