Optimal sorting method and application to SSRF booster dipoles

ZHANG Man-Zhou; HOU Jie; LI Hao-Hu; LIU Gui-Min; LI De-Ming

doi:10.1088/1674-1137/32/11/015

Chinese Physics C> 2008, Vol. 32> Issue(11) : 924-927 DOI: 10.1088/1674-1137/32/11/015

Optimal sorting method and application to SSRF booster dipoles

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Abstract：
As the dipoles of SSRF booster are powered in series, the magnet field error varies from magnet to magnet and results in bad beam quality. Sorting and installing magnets according to the measured field errors so that the errors on different magnets are partially compensated with each other, has been the easiest way in many cases to reduce the detrimental effects of the errors without introducing complications. Based on the magnet field measurement results, we investigated and implemented the sorting of dipoles using a method mixed by local cancellation and simulated annealing, and it's found to be quite effective.

References

[1]

. LI D M, GU Q, ZHAO Z T. New Scheme of the SSRF Injector. In: Asian Particle Accelerator Conference, Proceedings of the 2004. 2004, 394-3962. Bartolini R, Scandale W, Giovannozzi W et al. Sorting Strategies for the LHC Dipoles. In: Particle Accelerator Conference, Proceedings of the 1997. 1997, 2: 14693. Ziemann V. Sorting the LHC Dipoles using Simulated Annealing. In: European Particle Accelerator Conference,Proceedings of the 1994. 1994, 1054-10564. HOU Jie, LIU Gui-Min, LI Hao-Hu et al. Chinese PhysicsC (HEPNP), 2008, 32(4): 2855. Abo-Bakr M. Sorting of Magnets for the BESSY II Booster and Storage Ring. In: European Particle Accelerator Conference, Proceedings of the 1996. 1996, 1314-13166. Press W H et al. Numerical Recipes - The Art of Scientific Computing. London: Cambridge University Press,1992, 5497. Terebilo A. Accelerator Toolbox for MATLAB, SLAC-PUB-8732. 2001, 10-35

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ZHANG Man-Zhou, HOU Jie, LI Hao-Hu, LIU Gui-Min and LI De-Ming. Optimal sorting method and application to SSRF booster dipoles[J]. Chinese Physics C, 2008, 32(11): 924-927. doi: 10.1088/1674-1137/32/11/015

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Received: 2008-01-25
Revised: 2008-03-12

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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

Optimal sorting method and application to SSRF booster dipoles

Corresponding author: ZHANG Man-Zhou,

Received Date: 2008-01-25

Accepted Date: 2008-03-12

Available Online: 2008-11-05

Abstract:

As the dipoles of SSRF booster are powered in series, the magnet field error varies from magnet to magnet and results in bad beam quality. Sorting and installing magnets according to the measured field errors so that the errors on different magnets are partially compensated with each other, has been the easiest way in many cases to reduce the detrimental effects of the errors without introducing complications. Based on the magnet field measurement results, we investigated and implemented the sorting of dipoles using a method mixed by local cancellation and simulated annealing, and it's found to be quite effective.

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Optimal sorting method and application to SSRF booster dipoles

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通讯作者: 陈斌, bchen63@163.com

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