Physical Review Accelerators and Beams (Jul 2023)

Simulations and experimental results of beam-beam effects in SuperKEKB

  • Demin Zhou,
  • Kazuhito Ohmi,
  • Yoshihiro Funakoshi,
  • Yukiyoshi Ohnishi,
  • Yuan Zhang

DOI
https://doi.org/10.1103/PhysRevAccelBeams.26.071001
Journal volume & issue
Vol. 26, no. 7
p. 071001

Abstract

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The beam-beam interaction is one of the most critical factors determining the luminosity performance of colliders. As a circular collider utilizing the crab-waist scheme, multiple factors, such as beam-beam, crab waist, impedances, etc., interact to determine the luminosity of SuperKEKB. The interplay of these factors makes it challenging to predict luminosity via simulations. This paper presents recent advances in understanding the luminosity performance of SuperKEKB from beam-beam simulations and experiments. The key aspects affecting the luminosity of SuperKEKB, as well as the areas where further research is needed, are highlighted.