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arXiv 2609.10288hep-ex

LHCb 光度测量探针的运行与性能

Operation and performance of the Probe for Luminosity Measurement at LHCb

F. Alessio, S. Barsuk, C. Beigbeder, A. Bellavista, O. Bezshyyko, I. Boiaryntseva, C. Bourgeois, A. Boyarintsev, M. Briere, L. Burmistrov, A. Carbone, G. Cavall… 展开作者

F. Alessio, S. Barsuk, C. Beigbeder, A. Bellavista, O. Bezshyyko, I. Boiaryntseva, C. Bourgeois, A. Boyarintsev, M. Briere, L. Burmistrov, A. Carbone, G. Cavallero, V. Chaumat, S. Cholak, D. Douillet, O. Duarte, P. Durante, F. Ferrari, E. Franzoso, C. Gaspar, L. Golinka-Bezshyyko, L. A. Granado Cardoso, E. Graverini, D. Hohov, G. Iaquaniello, V. Kushnir, R. Matev, P. Mayencourt, V. Mytrochenko, V. Orlov, V. Puill, D. Reynet, P. Robbe, P. Rosier, L. Shchutska, Y. Song, E. Spedicato, L. Toscano, M. van Dijk, A. Villa, G. Vouters, V. Yeroshenko, V. Zhovkovska

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中文总结 AI 辅助

本文报告了 LHCb 的 PLUME 光度探测器在 Run 3 期间(2024-2026)的运行性能,其测得积分光度为 (26.71 ± 1.07) fb⁻¹,并用于实时逐束团监测和光度调平控制。

中文摘要 AI 辅助

光度测量探针(PLUME)探测器是 LHCb 相互作用点处的专用光度监测器。它是一个由 48 个滨松 R760 光电倍增管组成的闪烁体探测器,用于探测沿与 LHCb 谱仪接收度相反方向运动的粒子所产生的切伦科夫光。PLUME 在 LHCb 数据采集期间提供实时的、逐束团的光度测量,并作为控制 LHCb 光度调平过程的主要探测器。此外,其数据与 LHCb 子系统的其他专用计数器一起离线使用,以确定传递给实验的积分光度。本文报告了该探测器在 Run 3 的 2024-2026 年数据采集期间运行性能。在此期间,LHCb 实验在质心能量为 $\sqrt{s} = 13.6$ TeV 的 $pp$ 碰撞中记录的积分光度,由 PLUME 在线光度计数器为探测器性能监测所测得,为 $\mathcal{L} = (26.71 \pm 1.07)$ fb$^{-1}$。物理分析中使用的光度值通过基于 van der Meer 扫描和束流气体成像技术的专用离线校准单独确定,并将在一篇专门的出版物中报告,因为它们超出了本文的范围。

英文摘要

The Probe for LUminosity MEasurement (PLUME) detector is a dedicated luminosity monitor at the LHCb interaction point. It is a hodoscope comprising 48 Hamamatsu R760 photomultiplier tubes that detect Cherenkov light produced by particles travelling in the direction opposite to the LHCb spectrometer acceptance. PLUME provides real-time, bunch-by-bunch luminosity measurements during LHCb data taking and serves as the primary detector for controlling the luminosity levelling process at LHCb. In addition, its data are used offline, together with other dedicated counters from LHCb sub-systems, to determine the integrated luminosity delivered to the experiment. This paper reports on the detector's operational performance during the 2024-2026 data-taking period of Run 3. The integrated luminosity recorded by the LHCb experiment in $pp$ collisions at $\sqrt{s} = 13.6$ TeV during this period, as measured by the PLUME online luminosity counters for detector performance monitoring, amounts to $\mathcal{L} = (26.71 \pm 1.07)$ fb$^{-1}$. The luminosity values used in physics analyses are determined separately through dedicated offline calibrations based on van der Meer scans and Beam Gas Imaging techniques, and will be reported in a dedicated publication, as they are beyond the scope of this paper.

发表机构

  • European Organization for Nuclear Research (CERN)(欧洲核子研究组织(CERN))
  • Laboratoire de Physique des 2 Infinis Irène Joliot-Curie, IJCLab(伊雷娜·约里奥-居里2无限物理实验室,IJCLab)
  • Sezione INFN di Bologna(博洛尼亚INFN分部)
  • Università di Bologna(博洛尼亚大学)
  • Institute for Scintillation Materials of the NAS of Ukraine(乌克兰国家科学院闪烁材料研究所)
  • Département de Physique Nucléaire et Corpusculaire, Université de Genève(日内瓦大学核与粒子物理系)
  • Sezione INFN di Ferrara(费拉拉INFN分部)
  • Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL)(洛桑联邦理工学院(EPFL)物理研究所)
  • Kharkiv Institute of Physics and Technology(哈尔科夫物理与技术研究所)
  • Fakultät Physik, Technische Universität Dortmund(多特蒙德工业大学物理学院)
  • Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP(萨瓦-蒙布朗大学,法国国家科学研究中心,IN2P3-LAPP)
  • Department of Physics, University of Warwick(华威大学物理系)

机构由 AI 辅助整理,请以论文原文为准。

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