Optimal sorting method and application to SSRF booster dipoles

中国物理C, 2008, 32(11): 924-927.

^1, , ² , ³ , ⁴ , ^5,

1.Shanghai Institute of Applied Physics,CAS,Shanghai 201800,China;Graduate University of Chinese Academy of Sciences,Beijing 100049,China

2.Shanghai Institute of Applied Physics,CAS,Shanghai 201800,China;Graduate University of Chinese Academy of Sciences,Beijing 100049,China

3.Shanghai Institute of Applied Physics,CAS,Shanghai 201800,China

4.Shanghai Institute of Applied Physics,CAS,Shanghai 201800,China

5.Shanghai Institute of Applied Physics,CAS,Shanghai 201800,China

基金项目: SSRF Project

Optimal sorting method and application to SSRF booster dipoles

ZHANG Man-Zhou ^1, , HOU Jie ² , LI Hao-Hu ³ , LIU Gui-Min ⁴ , LI De-Ming ^5,

1.Shanghai Institute of Applied Physics,CAS,Shanghai 201800,China;Graduate University of Chinese Academy of Sciences,Beijing 100049,China

2.Shanghai Institute of Applied Physics,CAS,Shanghai 201800,China;Graduate University of Chinese Academy of Sciences,Beijing 100049,China

3.Shanghai Institute of Applied Physics,CAS,Shanghai 201800,China

4.Shanghai Institute of Applied Physics,CAS,Shanghai 201800,China

5.Shanghai Institute of Applied Physics,CAS,Shanghai 201800,China

Keywords： sorting

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.

参考文献

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[4]	HOU Jie,LIU Gui-Min,LI Hao-Hu,ZHANG Man-Zhou.Sorting of bending magnets for the SSRF booster[J].中国物理C（英文版）,2008(04):285-289.
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