Abstract
Transverse multibunch instabilities including the resistive wall instability and ion instabilities are investigated analytically and numerically for two bunch trains on separated orbits in a storage ring. The two separated orbits' operating mode appears more stable against transverse multibunch instabilities than the conventional single orbit operating mode and may be beneficial to high current operations for colliders or synchrotron light sources.
Highlights
PACS numbers: 29.27.−a, 29.20.db, 42.72.−g. It has been reported in [1,2] that a camshaft bunch can be produced by a fast kicker at the repetition rate of the revolution frequency of the storage ring at the Advanced Light Source (ALS)
The camshaft bunch in the ALS storage ring permanently stays on the distorted orbit so that the radiation is separated from that of the bunch train and can be used for time-of-flight experiments
The technique can be extended to produce two spatially separated bunch trains (TSSB) in one storage ring if the pulse width is stretched to about half of the revolution period and one of the bunch trains is kicked to the distorted orbit by the fast kicker while the other is unaffected
Summary
It has been reported in [1,2] that a camshaft bunch can be produced by a fast kicker at the repetition rate of the revolution frequency of the storage ring at the Advanced Light Source (ALS). The camshaft bunch in the ALS storage ring permanently stays on the distorted orbit so that the radiation is separated from that of the bunch train and can be used for time-of-flight experiments. The technique can be extended to produce two spatially separated bunch trains (TSSB) in one storage ring if the pulse width is stretched to about half of the revolution period and one of the bunch trains is kicked to the distorted orbit by the fast kicker while the other is unaffected.
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