High precision energy calibration with resonant depolarization at the VEPP-4M collider☆

V.E. Blinov,A.V. Bogomyagkov, V.P. Cherepanov,V.A. Kiselev,E.B. Levichev,S.I. Mishnev, A.I. Mikaiylov, N.Yu. Muchnoi,S.A. Nikitin,I.B. Nikolaev,D.M. Nikolenko,K.Yu. Todyshev,D.K. Toporkov,G.M. Tumaikin,A.G. Shamov, E.I. Shubin,V.N. Zhilich

Nuclear and Particle Physics Proceedings（2016）

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摘要

At the VEPP-4M collider the record accuracy of 10−6 of an absolute beam energy calibration was achieved with the resonant depolarization technique in the energy range including the J/ψ, ψ(2S), ψ(3770) resonances as well as the τ - lepton production threshold. This report discusses the methods, equipment and the results.

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关键词

VEPP-4M,KEDR,resonance depolarization,Touschek polarimeter,Compton backscattering,beam energy measurement

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