20赫兹助推器周期率对滑移堆积的影响
Implications of a 20-Hz Booster cycle-rate for Slip-stacking
摘要：
我们研究的潜在影响，从改变助推器的周期率从15赫兹到20赫兹的滑移堆积。我们发现，改变助推器的周期率为20赫兹将大大增加滑移堆积桶面积，同时可能需要更多的使用回收动量孔和额外的功率耗散的RF腔。特别地，来自RF干扰的损耗可以减少4-10倍（取决于增强波束纵向参数）。我们讨论了高宽比和束流发射度的要求，有效的滑移堆积在两个周期率的情况下。使用不同的注入方案可以消除对回收器中更大动量孔径的需要。
英文摘要：
We examine the potential impacts to slip-stacking from a change of the Booster cycle-rate from 15- to 20-Hz. We find that changing the Booster cycle-rate to 20-Hz would greatly increase the slip-stacking bucket area, while potentially requiring greater usage of the Recycler momentum aperture and additional power dissipation in the RF cavities. In particular, the losses from RF interference can be reduced by a factor of 4-10 (depending on Booster beam longitudinal parameters). We discuss the aspect ratio and beam emittance requirements for efficient slip-stacking in both cycle-rate cases. Using a different injection scheme can eliminate the need for greater momentum aperture in the Recycler.
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