Round colliding beams at VEPP-2000 with extreme tuneshifts

D. Shwartz, V. Anashin, O. Belikov, D. Berkaev, K. Gorchakov, A. Kasaev, A. Kirpotin, I. Koop, A. Krasnov, G. Kurkin, A. Lysenko, S. Motygin, E. Perevedentsev, V. Prosvetov, D. Rabusov, Yu Rogovsky, A. Semenov, A. Senchenko, D. Shatilov, P. ShatunovYu Shatunov, O. Shubina, M. Timoshenko, I. Zemlyansky, Yu Zharinov

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

VEPP-2000 is the only electron-positron collider operating with round beams that results in enhancement of 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 achieve high beam-beam tuneshift 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).

Original languageEnglish
Title of host publicationeeFACT 2018 - Proceedings of the 62nd ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders
PublisherJoint Accelerator Conferences Website (JACoW)
Pages34-40
Number of pages7
ISBN (Electronic)9783954502165
DOIs
Publication statusPublished - 1 Feb 2019
Event62nd ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e� Colliders, eeFACT 2018 - Hong Kong, China
Duration: 24 Sep 201827 Sep 2018

Publication series

NameeeFACT 2018 - Proceedings of the 62nd ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders

Conference

Conference62nd ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e� Colliders, eeFACT 2018
CountryChina
CityHong Kong
Period24.09.201827.09.2018

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