| 摘要 |
A circular particle accelerator includes a twist element at one location in its ring lattice which interchanges horizontal and vertical betatron oscillations upon each particle passage. Two traversals of the ring are required to return the particle to a corresponding state, thus the accelerator is termed a "M+E,uml o+EE bius" accelerator. The resultant toggling between transverse oscillation modes causes the accelerator to have remarkable properties, very different and in important ways superior to a conventional circular accelerator. Beam brightness can be increased by increasing the strength of focusing elements in the lattice while still preserving large amplitude stability. Furthermore, the resulting round particle beams generated by the accelerator are shown to be robust against beam-beam interaction, thus permitting use of the accelerator with unseparated, counter-rotating particle beams.
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