The Pixel Luminosity Telescope: a detector for luminosity measurement at CMS using silicon pixel sensors
The Pixel Luminosity Telescope: a detector for luminosity measurement at CMS using silicon pixel sensors
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DOI：
10.1140/epjc/s10052-023-11713-6
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发表时间：
2023-07-28
影响因子：
4.4
通讯作者：
Shevelev, A.
中科院分区：
文献类型：
--
作者：
Ayala, E.;Jarrin, E. Carrera;Shevelev, A.
像素光度望远镜是一个硅像素探测器，专门用于LHC CMS实验的光度测量。它位于距离相互作用点约1.75米处，并被布置成16个“望远镜”，其中8个望远镜安装在探测器两端的光束管周围，每个望远镜由三个单独的硅传感器平面组成。每束团的瞬时光度是通过计数事件来测量的，其中望远镜中的所有三个平面都记录了一次撞击，使用一个特殊的读数，在40 MHz的LHC束团交叉率下。完整的像素信息以较低的速率读出，可用于确定在线和离线测量的校准、校正和系统不确定性。本文详细介绍了LHC运行2（2015-18）期间探测器的调试、运行历史和性能，以及将于2022年开始的运行3的准备工作。
The Pixel Luminosity Telescope is a silicon pixel detector dedicated to luminosity measurement at the CMS experiment at the LHC. It is located approximately 1.75 m from the interaction point and arranged into 16 "telescopes", with eight telescopes installed around the beam pipe at either end of the detector and each telescope composed of three individual silicon sensor planes. The per-bunch instantaneous luminosity is measured by counting events where all three planes in the telescope register a hit, using a special readout at the full LHC bunch-crossing rate of 40 MHz. The full pixel information is read out at a lower rate and can be used to determine calibrations, corrections, and systematic uncertainties for the online and offline measurements. This paper details the commissioning, operational history, and performance of the detector during Run 2 (2015-18) of the LHC, as well as preparations for Run 3, which will begin in 2022.