Orbit response matrix analysis and lattice periodicity restoration of the SSRF storage ring

CHEN Jian-Hui; ZHANG Man-Zhou; ZHAO Zhen-Tang

doi:10.1088/1674-1137/33/9/015

Chinese Physics C> 2009, Vol. 33> Issue(9) : 785-788 DOI: 10.1088/1674-1137/33/9/015

Orbit response matrix analysis and lattice periodicity restoration of the SSRF storage ring

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Abstract：
In this paper, we present numerically and experimentally the linear beam-optics distortion in the SSRF storage ring and the correction of optics by using a number of quadrupole magnets installed in the storage ring. The measured orbit-response matrices were fitted to the model-response matrices to obtain the β and the dispersion functions in the storage ring. By readjusting the currents of quadrupole-magnet power supplies, we were able to successfully restore the optics parameters to values very close to the design ones, with rms deviations around 1%. This periodicity restoration is verified with the β function measurement.

References

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CHEN Jian-Hui, ZHANG Man-Zhou and ZHAO Zhen-Tang. Orbit response matrix analysis and lattice periodicity restoration of the SSRF storage ring[J]. Chinese Physics C, 2009, 33(9): 785-788. doi: 10.1088/1674-1137/33/9/015

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Received: 2008-10-27
Revised: 2009-02-23

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Orbit response matrix analysis and lattice periodicity restoration of the SSRF storage ring

Corresponding author: ZHAO Zhen-Tang,

Received Date: 2008-10-27

Accepted Date: 2009-02-23

Available Online: 2009-09-05

Abstract:

In this paper, we present numerically and experimentally the linear beam-optics distortion in the SSRF storage ring and the correction of optics by using a number of quadrupole magnets installed in the storage ring. The measured orbit-response matrices were fitted to the model-response matrices to obtain the β and the dispersion functions in the storage ring. By readjusting the currents of quadrupole-magnet power supplies, we were able to successfully restore the optics parameters to values very close to the design ones, with rms deviations around 1%. This periodicity restoration is verified with the β function measurement.

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Orbit response matrix analysis and lattice periodicity restoration of the SSRF storage ring

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通讯作者: 陈斌, bchen63@163.com

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