已收录 273079 条政策
 政策提纲
  • 暂无提纲
Sorting chromatic sextupoles for easily and effectively correcting second order chromaticity in the Relativistic Heavy Ion Collider
[摘要] Based on the contributions of the chromatic sextupole families to the half-integer resonance driving terms, we discuss how to sort the chromatic sextupoles in the arcs of the Relativistic Heavy Ion Collider (RHIC) to easily and effectively correct the second order chromaticities. We propose a method with 4 knobs corresponding to 4 pairs of chromatic sextupole families to online correct the second order chromaticities. Numerical simulation justifies this method, showing that this method reduces the unbalance in the correction strengths of sextupole families and avoids the reversal of sextupole polarities. Therefore, this method yields larger dynamic apertures for the proposed RHIC 2009 100GeV polarized proton run lattices.
[发布日期] 2009-01-02 [发布机构] 
[效力级别]  [学科分类] 物理(综合)
[关键词] APERTURES;HEAVY IONS;PROTONS;RESONANCE;SIMULATION;SORTING [时效性] 
   浏览次数:21      统一登录查看全文      激活码登录查看全文