发表机构
Comenius University Bratislava（布拉迪斯拉发康斯坦丁尼科斯大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
针对HL-LHC更高辐射和粒子通量需求，优化TileCal量能器设计，更换抗辐射读出电子学和PMT，并通过辐照测试验证其性能与鲁棒性。
AI 中文摘要
Tile量能器（TileCal）是覆盖欧洲核子研究中心（CERN）大型强子对撞机（LHC）上ATLAS实验中心区域的一种取样型强子量能器。它采用钢作为吸收体材料，塑料闪烁体作为活性介质。计划于2030年开始运行的高亮度LHC（HL-LHC）将提供显著超过基线LHC设计的瞬时亮度，这对探测器读出和触发系统提出了更严格的要求。因此，TileCal必须能够在增加的辐射水平和非常高的粒子通量下可靠运行，同时保持与升级后的ATLAS触发架构完全兼容。在长期停机期间（2026-2030年），TileCal的读出电子学将完全替换为抗辐射系统，该系统设计用于处理比基线LHC配置高约一个数量级的数据速率。在辐射最强烈区域的光电倍增管（PMT）也将替换为具有增强稳定性和抗辐射性的改进型器件。为应对这些挑战，系统设计已相应优化，以确保在高辐射环境中的改进性能、效率和鲁棒性，并开展了广泛的辐照测试计划。本文介绍了TileCal系统由此产生的设计进展，以及辐照测试获得的结果。
英文摘要
The Tile Calorimeter (TileCal) is a sampling hadronic calorimeter covering the central region of the ATLAS experiment at the CERN Large Hadron Collider (LHC). It employs steel as the absorber material and plastic scintillators as the active medium. The High-Luminosity LHC (HL-LHC), scheduled to start operation in 2030, will deliver instantaneous luminosities significantly exceeding the baseline LHC design, imposing more stringent requirements on detector readout and trigger systems. Consequently, TileCal has to be capable of reliable operation under increased radiation levels and very high particle flux, while maintaining full compatibility with the upgraded ATLAS trigger architecture. During the Long Shutdown period (2026-2030), the TileCal readout electronics will be entirely replaced with radiation-tolerant systems designed to handle data rates approximately an order of magnitude higher than those of the baseline LHC configuration. The photomultiplier tubes (PMTs) in the most highly irradiated regions will also be replaced with improved devices exhibiting enhanced stability and radiation tolerance. To meet these challenges, the system design has been correspondingly optimized to ensure improved performance, efficiency and robustness in high-radiation environments, and an extensive irradiation testing program has been carried out. This contribution presents the resulting design developments of the TileCal system, together with the results obtained from the irradiation tests.
Comments8 pages, proceedings from 28$^{\text{th}}$ International Workshop on Radiation Imaging Detectors, Prepared for submission to JINST
