Phys. Rev. ST Accel. Beams 4, 022802 (2001) [6 pages]Vertical instability with transient characteristics in KEK-Photon Factory electron storage ring
A. Mochihashi
T. Obina, Y. Tanimoto, and T. Kasuga Received 11 August 2000; published 22 February 2001 A vertical instability of the KEK-Photon Factory electron storage ring was observed in a multibunch mode with empty buckets (bunch gap) using a bunch-by-bunch beam diagnostic system that consisted of a high-speed light shutter and an optical betatron oscillation detector. It was clearly seen that vertical betatron frequencies of individual bunches varied along a bunch train. The dependence of the betatron frequencies on the bunch positions in the train was explained by modulation of trapped-ion density caused by passage of the beam. Agreement between experimental results and the theoretical prediction was quite good. ©2001 The American Physical Society
URL: http://link.aps.org/abstract/PRSTAB/v4/e022802 [ Abstract | Previous article | Next article | Issue 2 ] |
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