Phys. Rev. ST Accel. Beams 10, 101001 (2007) [11 pages]Orbit feedback system for maintaining an optimum beam collision
An orbit feedback system around the interaction point (IP) has been developed and successfully employed at KEKB for more than 6 years. The purpose of the system is to maintain an optimum geometrical relationship of orbits of two beams at the IP and to prevent a luminosity degradation due to orbit drifts. The feedback system is based on orbit measurements around the IP rather than a direct measurement of the luminosity. Owing to the system, the luminosity degradation due to the orbit drifts is suppressed to around or less than 1%. This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevSTAB.10.101001
DOI:
10.1103/PhysRevSTAB.10.101001
PACS:
29.20.Dh, 29.27.Bd
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