arXiv physics/00060772000-06-29physics.acc-ph

PEP-II低β光学器件的升级

Upgrade of the PEP-II Low Beta Optics

Y. Nosochkov, M. Biagini, Y. Cai, F. -J. Decker, M. H. R. Donald, S. Ecklund, A. Fisher, W. Kozanecki, P. Krejcik, A. Kulikov, M. Minty, I. Reichel, J. Seeman, … 展开作者

Y. Nosochkov, M. Biagini, Y. Cai, F. -J. Decker, M. H. R. Donald, S. Ecklund, A. Fisher, W. Kozanecki, P. Krejcik, A. Kulikov, M. Minty, I. Reichel, J. Seeman, M. Sullivan, U. Wienands, Y. Yan

备注：: 4 pages, 4 figures, presented at the 7th European Particle Accelerator Conference (EPAC 2000), Vienna, Austria, June 26-30, 2000

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摘要：

PEP-II非对称电子对撞机的成功调试和运行激发了进一步研究以提高亮度。在本文中，我们讨论了PEP-Ⅱ晶格的修改，以减少在相互作用点（IP）的垂直β函数的设计值为1.5厘米至1.0厘米。这可以潜在地减小碰撞束尺寸，增加IP处的粒子密度和束-束相互作用的概率。在本文中，我们概述了光学修改，讨论跟踪模拟，并概述机器实现。

英文摘要：

The successful commissioning and operation of the PEP-II asymmetric e+e- collider motivated further studies to increase luminosity. In this paper, we discuss a modification of the PEP-II lattice to reduce the vertical beta function at the Interaction Point (IP) from the design value of 1.5cm to 1.0cm. This could potentially reduce the colliding beam size, increase particle density at the IP and the probability of beam-beam interactions. In this paper, we outline the optics modifications, discuss tracking simulations, and overview machine implementation.

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