Paper | Title | Page |
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TPPP007 | Recent Progress at KEKB | 1045 |
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We summarize the machine operation of KEKB during past one year. Progress for this period, causes of present performance limitations and future prospects are described. | ||
RPAT088 | Energy-Spread-Feedback System for the KEKB Injector Linac | 4212 |
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New energy-spread feedback system using nondestructive energy-spread monitors have been developed in order to control and stabilize the energy spreads of single-bunch electron and positron beams in the KEKB injector linac. The well-controlled feedback systems of the injector linac are successfully working in dairy operation not only for keeping the injection rate higher along with the beam-orbit and energy feedback systems but also for reducing a background level to the high-energy B-factory experiment. The energy spreads of the injection beams are well stabilized within 0.2%, 0.5% and 0.3% for the electron beam, the positron beam, and the high-current primary electron beam for positron production, respectively, through the energy-spread feedback system under the nominal operation condition. In this paper, we will report in detail the energy-spread feedback system using the nondestructive energy-spread monitors with multi-strip-line electrodes and their performance in the KEKB operation. |