Crab dispersion and its impact on the CERN Large Hadron Collider collimation

Crab dispersion and its impact on the CERN Large Hadron Collider collimation
复制标题

蟹色散及其对 CERN 大型强子对撞机准直的影响

DOI：
--
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
F. Zimmermann
F. Zimmermann
中科院分区：
--
文献类型：
--
作者：
P. Sun;R. Assmann;R. Tomás;F. Zimmermann

文献摘要

被引文献

相似文献

欧洲核子研究组织(CERN)，瑞士日内瓦(2009年10月19日收到；2010年3月12日出版)Crab腔被提议用于大型强子对撞机(LHC)的光度升级。Crab腔是以横向偶极模式工作的RF腔，它向束流粒子提供随束团纵向位置变化的横向踢动。螃蟹腔给粒子引入了另一种依赖于z的色散，从而使光束动力学复杂化，并对LHC准直系统产生影响。至于大型强子对撞机，非动量β拍频和色散拍频已经损害了准直系统的性能；由全球蟹腔引入的螃蟹色散可能也会造成同样的影响，应该仔细评估。本文提出了CRB色散的定义，并研究了它对大型强子对撞机准直系统的影响。
European Organization for Nuclear Research (CERN), Geneva, Switzerland(Received 19 October 2009; published 12 March 2010)Crab cavities are proposed to be used for a luminosity upgrade of the Large Hadron Collider (LHC).Crab cavities are rf cavities operated in a transverse dipole mode, which imparts on the beam particles atransverse kick that varies with the longitudinal position along the bunch. The crab cavity introducesanother kind of dispersion to the particles which is z dependent, and thus could complicate the beamdynamics and have an impact on the LHC collimation system. As for LHC, the off-momentum beta-beatand dispersion-beat already compromise the performance of the collimation system; the crab dispersionintroduced by global crab cavities might do the same, and should be carefully evaluated. In this paper, wepresent a definition for the crab dispersion, and study its impact on the LHC collimation system.