费米实验室主进样器色度控制

G. Wu, C. Bhat, B. Brown, D.E. Johnson
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引用次数: 2

摘要

费米实验室主注入器的色度控制对于将质子和反质子从8gev加速到150gev(或120gev)以及将回收的150gev反质子减速到8gev以存储在回收环中都是重要的。主进样器有两组六极柱来控制色度。除了自然色度外,他们还必须校正偶极电子束管中斜坡率相关的涡流和偶极磁体中电流相关的六极场。水平六极族需要在低于20 GeV跃迁能量的双极模式下工作。我们描述了用于控制费米实验室主注入器色度的方法。重点介绍了前端斜坡控制器的操作接口的软件实现。色度测量结果及其与设计模型的比较将被提出。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Chromaticity control in the Fermilab Main Injector
Chromaticity control in the Fermilab Main Injector will be important both in accelerating protons and antiprotons from 8 GeV to 150 GeV (or 120 GeV) and in decelerating recycled 150 GeV antiprotons to 8 GeV for storage in the Recycler Ring. The Main Injector has two families of sextupoles to control the chromaticity. In addition to the natural chromaticity, they must correct for sextupole fields from ramp-rate-dependent eddy currents in the dipole beam pipes and current-dependent sextupole fields in the dipole magnets. The horizontal sextupole family is required to operate in a bipolar mode below the transition energy of 20 GeV. We describe methods used to control chromaticities in the Fermilab Main Injector. Emphasis is given to the software implementation of the operator interface to the front-end ramp controllers. Results of chromaticity measurements and their comparison with the design model will be presented.
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