wang lin, li yong-jun, feng guang-yao, et al. Dynamic effects of octupole-magnets in HLS storage ring[J]. High Power Laser and Particle Beams, 2005, 17.
Citation:
wang lin, li yong-jun, feng guang-yao, et al. Dynamic effects of octupole-magnets in HLS storage ring[J]. High Power Laser and Particle Beams, 2005, 17.
wang lin, li yong-jun, feng guang-yao, et al. Dynamic effects of octupole-magnets in HLS storage ring[J]. High Power Laser and Particle Beams, 2005, 17.
Citation:
wang lin, li yong-jun, feng guang-yao, et al. Dynamic effects of octupole-magnets in HLS storage ring[J]. High Power Laser and Particle Beams, 2005, 17.
In order to attain the design beam intensity of Phase II Project of Hefei Light Source(HLS), one family of octupoles were installed in the place where vertical Batatron function is relatively large in HLS storage ring. After adding octupoles, the horizontal dynamic aperture is little affected but the vertical dynamic aperture decreased drastically. This is not detrimental to beam injection and accumulation, because the vertical dynamic aperture is still larger than physical aperture. The vertical oscillation frequency spread generated by octupoles can provide Landau damping time about several microseconds, which is very helpful to overcome vertical collective instabilities in HLS storage ring, where radiation damping time is 1.4 s. One year's operation has demonstrated the effectiveness of
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