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arXiv 2602.11952physics.acc-ph
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束内散射

Intrabeam Scattering

University of Liverpool(利物浦大学);Cockcroft Institute(科克弗研究所)

Andrzej Wolski

AI总结:

本文研究了束内散射对束发散度的影响,介绍了Piwinski公式用于计算发散度增长速率,并通过实验数据验证了理论模型。

摘要:

束内散射指的是在加速器中束内带电粒子之间的库仑相互作用所产生的效应。束内散射的一个主要后果是束的发散度发生变化:在某些情况下(特别是,在超过过渡点运行的强子储存环中),横向和纵向发散度可能随时间无限增长。这可能会限制那些维持低束发散度至关重要机器的性能。在本文中,我们描述了用于分析束内散射效应的一些模型,并特别介绍了Piwinski公式用于计算发散度增长速率。我们还比较了预测的发散度变化与不同参数条件下多台机器的测量结果。

英文摘要:

Intrabeam scattering refers to the effects of the Coulomb interaction acting between pairs of charged particles within a bunch in an accelerator. One of the main consequences of intrabeam scattering is a change in the emittances of a bunch: in some circumstances (in particular, in hadron storage rings operating above transition), the transverse and longitudinal emittances may grow over time without limit. This may restrict the performance of machines for which maintaining low beam emittance is an important requirement. In this note, we describe some of the models used to analyse the effects of intrabeam scattering, and present in particular the Piwinski formulae for the emittance growth rates. We compare the predicted changes in emittance with measurements in a number of machines operating in different parameter regimes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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