Beam Energy Measurement by Resonant Depolarization Method at VEPP-4M

Authors

  • Ivan Nikolaev Budker Institute of Nuclear Physics
  • Vladimir Blinov Budker Institute of Nuclear Physics
  • Vladimir Ivakin Budker Institute of Nuclear Physics
  • Vyacheslav Kaminskiy Budker Institute of Nuclear Physics
  • Vasily Kudryavtsev Budker Institute of Nuclear Physics
  • Sergey Nikitin Budker Institute of Nuclear Physics
  • Lev Shekhtman Budker Insitute of Nuclear Physics

DOI:

https://doi.org/10.23727/CERN-Proceedings-2017-001.109

Keywords:

Beam energy measurement, resonant depolarization, Touschek, intra-beam scattering, Compton backscattering, polarized beam, VEPP-4M, KEDR.

Abstract

Experiments on high precision mass measurement of particles require precise beam energy calibration. The most accurate method of beam energy measurement is the resonant depolarization technique. This article describes the beam energy measurement at the VEPP-4M storage ring using this method together with a Touschek polarimeter. The accuracy achieved is about 10−6. More than thousand energy calibrations were used in the KEDR detector for the precise experiments on the measurement of J/ψ, ψ(2S), ψ(3770), D+, D0 meson and τ lepton masses.

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Published

2017-06-29

Issue

Vol. 1 (2017): CERN-BINP Workshop for Young Scientists in e+e- Colliders

Section

Submission to the proceedings of CERN-BINP Workshop for young scientists in e+e- colliders

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