论文标题
爱丽丝·穆恩（Alice Muon）标识符
The ALICE Muon IDentifier
论文作者
论文摘要
在LHC Run-I（2010-2013）和Run-II（2015-2018）期间，使用专用的Muon触发系统进行了amuon物理学的有趣事件，基于72个基于72个单间隙的Bakelite bakelite电阻板室（RPC），在Maxi-avalanche Mode（Maxi-avalancte Modepifitive and thressifiatival and thresse）中进行操作，而不是成人元素和A. Maxi-avalande and-thresse and thressive and Am av thress and av thress and av and av。从Run-III（从2021年开始）开始，为了从PB-PB碰撞的发光度增加，Alice实验将以连续读数（无弹力）模式运行，并且MUON触发系统（MTR）将成为MUON标识符（MID）。为了支持连续读数，读出的电子设备正在升级。此外，为了提高RPC速率能力并减轻可能的衰老效果，决定以较低的增益操作探测器，并用配备放大阶段的新卡（FEERIC）替换成人前端卡。同样，将阈值分配系统升级到前端将允许一个在单个前端卡级上调整阈值，而以前仅在单RPC级别上才有可能。最后，由于目前在爱丽丝（Alice）中安装的某些RPC已针对其经过认证的终生进行了不可忽略的费用，因此将大约25％的探测器替换为新型探测器，并用不同类型的贝克利特层压板构建。此贡献将介绍MTR升级及其当前状态的详细描述。
During the LHC Run-I (2010-2013) and Run-II (2015-2018), the selection of interesting events for muon physics in ALICE was performed with a dedicated muon trigger system, based on 72 single-gap bakelite Resistive Plate Chambers (RPCs), operated in maxi-avalanche mode (ADULT front-end electronics without amplification and a threshold of 7 mV). From Run-III (starting in 2021) on, in order to fully profit from the increased luminosity of Pb-Pb collisions, the ALICE experiment will run in continuous readout (triggerless) mode and the muon trigger system (MTR) will become a Muon Identifier (MID). The read-out electronics is being upgraded in order to support continuous readout. Moreover, in order to increase the RPC rate capability and to mitigate possible aging effects, it was decided to operate the detectors with a lower gain, and to replace the ADULT front-end cards with new cards (FEERIC), equipped with an amplification stage. Also, an upgrade of the threshold distribution system to the front-end will allow one to tune thresholds at the single front-end card level, while this was previously only possible at the single-RPC level. Finally, since some of the RPCs currently installed in ALICE have integrated a non-negligible charge with respect to their certified life-time, about 25% of the detectors will be replaced with new ones, built with a different type of bakelite laminates. A detailed description of the MTR upgrade and of its current status will be presented in this contribution.
