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| WEPC26 |
Transverse Bunch-by-Bunch Feedback for the VEPP-4M Electron-Positron Collider
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367 |
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- V. P. Cherepanov, E. N. Dementyev, E. B. Levichev, A. S. Medvedko, V. V. Smaluk, D. P. Sukhanov
BINP SB RAS, Novosibirsk
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Transverse mode coupling instability (TMCI or fast head-tail) is the principal beam current limitation of the VEPP-4M electron-positron collider. For the high-energy physics experiments at the 5.5 GeV energy, the VEPP-4M bunch current should exceed much the TMCI threshold. To suppress transverse beam instabilities, a broadband bunch-by-bunch digital feedback system is developed. The feedback concept is described, the system layout and first beam measurements are presented.
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