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@inproceedings{shwartz:ipac2021-tupab002, author = {D.B. Shwartz and O.V. Belikov and D.E. Berkaev and D.B. Burenkov and V.S. Denisov and A.S. Kasaev and A.N. Kirpotin and S.A. Kladov and I. Koop and A.A. Krasnov and A.V. Kupurzhanov and G.Y. Kurkin and M.A. Lyalin and A.P. Lysenko and S.V. Motygin and E. Perevedentsev and V.P. Prosvetov and Yu.A. Rogovsky and A.M. Semenov and A.I. Senchenko and L.E. Serdakov and D.N. Shatilov and P.Yu. Shatunov and Y.M. Shatunov and M.V. Timoshenko and I.M. Zemlyansky and Yu.M. Zharinov}, % author = {D.B. Shwartz and O.V. Belikov and D.E. Berkaev and D.B. Burenkov and V.S. Denisov and A.S. Kasaev and others}, % author = {D.B. Shwartz and others}, title = {{Round Colliding Beams: Successful Operation Experience}}, booktitle = {Proc. IPAC'21}, pages = {1326--1329}, eid = {TUPAB002}, language = {english}, keywords = {luminosity, emittance, collider, solenoid, beam-beam-effects}, venue = {Campinas, SP, Brazil}, series = {International Particle Accelerator Conference}, number = {12}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {08}, year = {2021}, issn = {2673-5490}, isbn = {978-3-95450-214-1}, doi = {10.18429/JACoW-IPAC2021-TUPAB002}, url = {https://jacow.org/ipac2021/papers/tupab002.pdf}, note = {https://doi.org/10.18429/JACoW-IPAC2021-TUPAB002}, abstract = {{VEPP-2000 electron-positron collider operating in the beam energy range of 150-1000 MeV is the only machine originally designed for and successfully exploiting Round Beams Concept. After injection chain upgrade including link to the new BINP injection complex VEPP-2000 proceeded with data taking since 2017 with luminosity limited only by beam-beam effects. At the low energies (300-600 MeV/beam) the novel technique of effective emittance controlled increase by weak coherent beam shaking allowed to suppress the limiting flip-flop effect and resulted in additional luminosity gain factor of 4. The averaged delivered luminosity at the omega-meson production energy (2*391 MeV) achieved L = 2*10³¹cm⁻²s⁻¹/IP. At the top energies above nucleon-antinucleon production threshold the stable operation with luminosity of L = 5*10³¹cm⁻²s⁻¹/IP resulted in high average data taking rate of 2 pb⁻¹/day in 2020.}}, }