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  • V.

    M.Veremeenko, R.V.Voskoboynikov, A.D.Goncharov, Yu.A.Evtushenko, V.V.Kolmogorov,

  • M.

    N.Kondaurov, G.S.Kraynov, A.M.Kryuchkov, A.S.Medvedko, V.V.Parkhomchuk,

  • S.

    P.Petrov, V.B.Reva, M.A.Tiunov, B.R.Karymov (Budker Institute of Nuclear Physics, No-

vosibirsk, Russia) High voltage power supplies for ion beams electron coolers

High voltage power supplies, developed for feeding the electron coolers EC-35 and EC-300, are described in this report. Stabilized voltage power supplies with output voltages 35 kV and 300 kV with the current up to 5mA and stability up to 10-5 are used for electron cooling of heavy ion beam. Under high potential of these power supplies there are many auxiliary power supplies, feeding the gun, control electrode, suppressor and control electronics. In this report the original decisions underlying in development of power supplies are considered. The electron coolers were developed under the contract between Budker Institute of Nuclear Physics (Novosibirsk, Russia) and Institute of Modern Physics (Lanzhou, China)

Yury Anatolievich Evtushenko: Yu.A.Evtushenko@inp.nsk.su

Plenary session: Heavy-ion accelerators and electron cooling

G. Tranquille, M. Chanel, Ch. Carly, V. Prieto, R. Sautier; CERN, Geneva, Switzerland, A. Bubley, V. Parkhomchuk, V. Reva, M. Brizgunov, M. Vedenev, V. Panasyuk; BINP, Novosi-

birsk, Russia Comissioning of the LEIR electron cooler with Pb+54


New LEIR cooler with variable profile of the electron beam and electrostatic bending was co- missioning 2005-2006. In this paper we present our experience with the comissioning of the new device as well as the first results of ion beam Pb+54 cooling with a high- intensity variable- density electron beam.

Prof. Vasily Vasilevich Parkhomchuk: parkhomchuk@inp.nsk.su

L.Prost (FNAL,USA) Status of High Energy Electron Cooling in FNAL Recycler Ring

Electron cooling of 8 GeV antiprotons at Fermilab's Recycler storage ring is now routinely used in the collider operation. It requires a 0.1-0.5 A, 4.3 MeV DC electron beam that increases the longitudinal phase-space density of the circulating antiproton beam. This paper discusses the cur- rent status of the electron cooler including the electron beam properties, its mode of operation within the context of Fermilab's accelerator complex and cooling force measurements for various conditions. Along with the data, theoretical models will be presented.

Dr. Lionel Prost: lprost@fnal.gov


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