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Detuning of the NSLS UV RF cavity to compensate for 1 Ampere of stored beam

By: Ramirez, G.; Mortazavi, P.; Keane, J.; Fauchet, A.M.; Buda, S.; Vignola, G.; Broome, W.; Aspenleiter, J.; Ackerman, H.; D'Alsace, R.; Thomas, M.;

1989 / IEEE

Description

This item was taken from the IEEE Periodical ' Detuning of the NSLS UV RF cavity to compensate for 1 Ampere of stored beam ' A mechanically driven loop tuner in addition to water temperature variation is used to compensate for the reactive detuning of the 52.8-MHz RF accelerating cavity at a 1-A circulating current. This combination avoids the higher-order resonances that occur with a single mechanical tune. Injection to the 1-A level was achieved without causing vacuum activity. This may be a consequence of the titanium coating eliminating the multipactoring or the changes in the inner loop area configuration. The increased range of the water system in conjunction with the larger shorted loop size allows for greater tuning flexibility.<>