Author: Prosvetov, V.P.
Paper Title Page
MOXMH02 VEPP-2000 Collider Operation in Full Energy Range with New Injector 7
 
  • D.B. Shwartz, V.V. Anashin, A.M. Batrakov, O.V. Belikov, D.E. Berkaev, D.B. Burenkov, K. Gorchakov, A.S. Kasaev, A.N. Kirpotin, I. Koop, A.A. Krasnov, G.Y. Kurkin, A.P. Lysenko, S.V. Motygin, A.V. Otboev, A.V. Pavlenko, E. Perevedentsev, V.P. Prosvetov, D.V. Rabusov, Yu. A. Rogovsky, A.M. Semenov, A.I. Senchenko, D.N. Shatilov, P.Yu. Shatunov, Y.M. Shatunov, O.S. Shubina, M.V. Timoshenko, S.S. Vasichev, V.D. Yudin, I.M. Zemlyansky, Yu.M. Zharinov
    BINP SB RAS, Novosibirsk, Russia
  • I. Koop, A.A. Krasnov, E. Perevedentsev, Yu. A. Rogovsky, A.I. Senchenko, Y.M. Shatunov, O.S. Shubina, D.B. Shwartz
    NSU, Novosibirsk, Russia
 
  VEPP-2000 is the only electron-positron collider operating with round beams that allow to enhance beam-beam limit. VEPP-2000 with SND and CMD-3 detectors carried out two successful data-taking runs after new BINP injection complex was commissioned. The 2016/2017 run was dedicated to high energy range (640-1000 MeV per beam) while the 2017/2018 run was focused at 275-600 MeV/beam energies. With sufficient positron production rate and upgraded full-energy booster the collider luminosity was limited by beam-beam effects, namely flip-flop effect. Thorough machine tuning together with new ideas introduced to suppress flip-flop allowed to establish new world record for beam-beam parameter and bunch-by-bunch luminosity values at specific beam energies. The achieved luminosity increased 2-5 times in a whole energy range in comparison to phase-1 operation (2010-2013).  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-MOXMH02  
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WEPSB17 New Quadrupoles Installed at VEPP-2000 for High Energy Operation Without Final Focus 319
 
  • D.B. Shwartz, I. Koop, N. Nefedov, V.P. Prosvetov, P.Yu. Shatunov, Y.M. Shatunov, A.V. Utkin
    BINP SB RAS, Novosibirsk, Russia
  • I. Koop, Y.M. Shatunov, D.B. Shwartz
    NSU, Novosibirsk, Russia
 
  The family of four weak quadrupoles was replaced at VEPP-2000 electron-positron collider with new one. New quads with increased bore diameter made with higher field quality and equipped with fiducial points are excited by water-cooled coils fed with new 300 A power supplies. That allowed to double integrated gradient and to implement so called "warm" operation mode (with switched-off final focus solenoids) above 500 MeV energy level. Presented in the paper "warm" modes are used for beam scrubbing and for resonance depolarization technique of Compton backscattering beam energy measurement system cross-calibration.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-WEPSB17  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)