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arXiv 1911.02438physics.ins-dethep-ex
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高亮度LHC的CMS跟踪器升级

The CMS Tracker Upgrade for the High-Luminosity LHC

Ernesto Migliore

摘要:

LHC机器正在计划一个升级计划,该计划将在2028年顺利地将瞬时光度提高到约$5-7.5\times10^{34}~\mathrm{cm}^{-2}\mathrm{s}^{-1}$,到2039年底可能达到3000-4500 fb $^{-1}$的积分亮度。这种高亮度LHC方案,HL-LHC,将需要LHC探测器的准备计划,称为第二阶段升级。目前的CMS外部跟踪器已经超出了设计规格,最近安装的CMS第一阶段像素探测器将无法在HL-LHC辐射条件下生存。因此,CMS将需要全新的设备,以充分利用高要求的操作条件和交付的光度。新的外部跟踪器也应该有触发功能。为了实现这些目标,研发活动研究了外部跟踪器和像素内部跟踪器的不同选择。所制定的解决办法将允许在1级触发机制中纳入跟踪信息。跟踪器升级的设计选择进行了讨论,以及一些突出的技术选择和研发活动。

英文摘要:

The LHC machine is planning an upgrade program, which will smoothly bring the instantaneous luminosity to about $5-7.5\times10^{34}~\mathrm{cm}^{-2}\mathrm{s}^{-1}$ in 2028, to possibly reach an integrated luminosity of 3000-4500 fb$^{-1}$ by the end of 2039. This High-Luminosity LHC scenario, HL-LHC, will require a preparation program of the LHC detectors known as Phase-2 upgrade. The current CMS Outer Tracker, already running beyond design specifications, and the recently installed CMS Phase-1 Pixel Detector will not be able to survive the HL-LHC radiation conditions. Thus, CMS will need completely new devices in order to fully exploit the high-demanding operating conditions and the delivered luminosity. The new Outer Tracker should also have trigger capabilities. To achieve such goals, the R&D activities have investigated different options for the Outer Tracker and for the pixel Inner Tracker. The developed solutions will allow including tracking information at the Level-1 trigger. The design choices for the Tracker upgrades are discussed along with some highlights on the technological choices and the R&D activities.

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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