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Dynamic Aperture Study of SuperKEKB with Beam-beam Effect

A. Morita, Haruyo Koiso, Y. Ohnishi, K. Oide, Hiroshi Sugimoto

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Abstract

The SuperKEKB is an asymmetric-energy double-ring collider to achieve 40 times higher luminosity than that of the KEKB B-factory. The strong non-linearity of both final focusing and beam-beam force, which are required to achieve such high luminosity, reduce dynamic aperture and limit Touschek beam lifetime. In order to achieve long enough beam lifetime for collision operation, we are studying the dynamic aperture under beam-beam effect. The study results of both dynamic aperture and Touschek beam lifetime are reported in this presentation.

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What this paper is about

The SuperKEKB is an asymmetric-energy double-ring collider to achieve 40 times higher luminosity than that of the KEKB B-factory. The strong non-linearity of both final focusing and beam-beam force, which are required to achieve such high luminosity, reduce dynamic aperture and limit Touschek beam lifetime. In order to achieve long enough beam lifetime for collision operation, we are studying the dynamic aperture under beam-beam effect. The study results of both dynamic aperture and Touschek beam lifetime are reported in this presentation.

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Available abstract

The SuperKEKB is an asymmetric-energy double-ring collider to achieve 40 times higher luminosity than that of the KEKB B-factory. The strong non-linearity of both final focusing and beam-beam force, which are required to achieve such high luminosity, reduce dynamic aperture and limit Touschek beam lifetime. In order to achieve long enough beam lifetime for collision operation, we are studying the dynamic aperture under beam-beam effect. The study results of both dynamic aperture and Touschek beam lifetime are reported in this presentation.

Key concepts: Dynamic aperture, Beam (structure), KEKB, Aperture (computer memory), Beam divergence, Optics, Physics, Laser beam quality

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