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ISSN - 15393755, Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 2002, vol. 65, p. 056502/1-056502/7

Coherent synchrobetatron beam-beam modes: Experiment and simulation

Nesterenko I. N., Perevedentsev E. A., Valishev A. A.

Analytic calculation and numerical simulations reveal a multiline structure in the spectrum of coherent dipole oscillations in the colliding beam system due to coupled synchrobetatron beam-beam modes. The model employed in the analysis involves linearization of the beam-beam kick and takes into account the fact that the length of the colliding bunches is finite. In the present paper, we discuss the behavior of the synchrobetatron beam-beam modes, obtained both analytically and numerically, and compare it with the experimental results for the VEPP-2M collider. A particular case of the betatron tune close to the half-integer resonance is considered on the basis of the presented models. © 2002 The American Physical Society.