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Title	VEPP-2000 Collider Complex Operation in 2019-2021 Runs
Authors	M.V. Timoshenko, Yu. Aktershev, O.V. Belikov, D.E. Berkaev, D.B. Burenkov, V.P. Druzhinin, K. Gorchakov, G.V. Karpov, A.S. Kasaev, A.N. Kirpotin, S.A. Kladov, I. Koop, A.V. Kupurzhanov, G.Y. Kurkin, M.A. Lyalin, A.P. Lysenko, S.V. Motygin, A.V. Otboev, A.V. Pavlenko, E. Perevedentsev, V.P. Prosvetov, Yu.A. Rogovsky, A.M. Semenov, A.I. Senchenko, L.E. Serdakov, P.Yu. Shatunov, Y.M. Shatunov, D.B. Shwartz, V.D. Yudin, I.M. Zemlyansky, Yu.M. Zharinov BINP SB RAS, Novosibirsk, Russia S.A. Kladov, I. Koop, M.A. Lyalin, A.V. Pavlenko, E. Perevedentsev, Yu.A. Rogovsky, A.I. Senchenko, P.Yu. Shatunov, Y.M. Shatunov, D.B. Shwartz NSU, Novosibirsk, Russia Yu.A. Rogovsky Budker INP & NSU, Novosibirsk, Russia A.M. Semenov BINP & NSTU, Novosibirsk, Russia
Abstract	VEPP-2000 is the only electron-positron collider operating with a round beam permitting to increase the limit of beam-beam effects. VEPP-2000 is the compact collider with 24.4 m-circumference which has record luminosity at energy up to 1 GeV per bunch (1032 1/cm²s), magnetic fields in superconducting solenoids (13 T) and in the bending magnets (2.4 T). Collider complex experimental program of 2019-2021 was focused on several energy ranges per bunch. Energy range in the second half of 2019 was 180-300 MeV, in the first half of 2020 ¿ 935-970 MeV, in the first half of 2021 - 970-1003.5 MeV. Data taking was carried out by CMD-3 and SND detectors and operation efficiency is compared with previous runs. Luminosity was limited by beam-beam effects. 2021 year was clouded by vacuum accident and subsequent intensive degassing using beam synchrotron radiation.
Paper	download TUY01.PDF [1.377 MB / 6 pages]
Slides	download TUY01_TALK.PDF [2.449 MB]
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Conference	RuPAC2021
Series	Russian Particle Accelerator Conference (27th)
Location	Alushta, Crimea
Date	27 September-01 October 2021
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	Maksim V. Kuzin (BINP, Novosibirsk, Russia); Volker RW Schaa (GSI, Darmstadt, Germany)
Online ISBN	978-3-95450-240-0
Online ISSN	2673-5539
Received	11 October 2021
Accepted	13 October 2021
Issued	23 October 2021
DOI	doi:10.18429/JACoW-RuPAC2021-TUY01
Pages	28-33
Copyright	Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.