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Helium beam acceleration in the KEK proton synchrotron with a newly developed injection system for positive/negative ions

By: Machida, S.; Mori, Y.; Takagi, A.; Sakai, I.; Yoshii, M.; Shoji, Y.; Sato, H.; Shirakata, M.; Toyama, T.;

1995 / IEEE / 0-7803-2934-1

Description

This item was taken from the IEEE Periodical ' Helium beam acceleration in the KEK proton synchrotron with a newly developed injection system for positive/negative ions ' A helium beam has been successfully accelerated in the KEK 12 GeV proton synchrotron up to 23 GeV of the limiting energy of the main ring. The first physics experiment with a helium beam was carried out in April, 1994. Although a charge exchange injection of negative hydrogen ions has been used in the booster synchrotron, it cannot be applied to the injection of positive ions, such as helium ions. A newly developed injection system realized alternative use of both negative and positive ion injection schemes.