论文标题
LHC Run-3的Atlas Muon光谱仪的BIS78电阻板腔升级
The BIS78 Resistive Plate Chambers upgrade of the ATLAS Muon Spectrometer for the LHC Run-3
论文作者
论文摘要
电阻板腔室用于MUON触发器的ATLAS实验中，并在中央区域进行两个坐标测量。为了准备未来几年的LHC以较高的发光度运行，除了新的小型车轮项目外，预计将补充端盖区域的Atlas Muon光谱仪，一个较小的尺寸项目，即BIS78，还在LHC长时间关闭过程中进行了预见的安装，还可以在LHC长期关闭2中进行the bis78 Project the BIS78 Project。通过在内部枪管的边缘上增加32个RPC三重态，Atlas Barrel和端盖是由于Beam Halo Proton产生的次级带电轨道以及缺乏检测器仪器而引起的，因为该区域的特征是该区域的特征很高。由于可用的空间狭窄，该项目预计将取代现有的受监视漂移管，用于该区域的精确位置测量，MUON站组成是由集成较小的直径管和新一代的RPC形成的，能够具有较高的速率并提供较高的速率并提供了可靠的独立Muon确认。这些新的RPC基于具有较薄的气体间隙和电阻电极，较低的工作电压和新的高增益前端电子产品的新型气体设计，相对于传统RPC。除了在Run-3和Onwards中的使用外，此项目还特别相关，作为HL-LHC升级的试验测试，预计有望额外的全层RPC三重态将补充最内向平面的整个桶形区域。介绍了项目的核心，以及对生产和测试结果的描述。还讨论了有关检测器基础设施和服务的详细信息，以及在长时间关闭2期间的最终装置和调试的路线图。
Resistive Plate Chambers are used in the ATLAS experiment for the muon trigger and two coordinate measurements in the central region. In preparation for the coming years of LHC running at higher luminosity, besides the New Small Wheel project which is expected to complement the ATLAS muon spectrometer in the endcap regions, a smaller size project, known as BIS78, is being developed with a foreseen installation during the LHC Long Shutdown 2. The BIS78 project will reinforce the fake muon rejection and the selectivity of the muon trigger in the transition region between the ATLAS barrel and end-caps by adding 32 RPC triplets on the edges of the Inner Barrel even sectors (BIS7 and BIS8) as this region is characterized by high rate due to secondary charged tracks generated by beam halo protons and a lack of detector instrumentation. Due to the narrow available space, the project foresees to replace the existing Monitored Drift Tubes, used for the precise position measurement in this area, with muon stations formed by integrated smaller diameter tubes and a new generation of RPCs, capable of withstanding the higher rates and provide a robust standalone muon confirmation. These new RPCs are based on novel design of the gas volume with a thinner gas gap and resistive electrodes, a lower operating voltage and new high gain front-end electronics with respect to the legacy RPCs. Besides the use in Run-3 and onwards, this project is also of particular relevance as a pilot test for the HL-LHC upgrade when an additional full layer of new RPC triplets is expected to complement the full barrel region in the innermost plane. The core of the project is presented, together with a description of the production and the test results. Details on the detector infrastructure and services along with a roadmap towards the final installation and commissioning during the Long Shutdown 2 are also discussed.
