Mu3e集成运行2021

摘要：

保罗·谢勒研究所的Mu3e实验寻找违反衰变$μ^+ \rightarrow e^+ e^+ e^-$的带电轻子味。实验的目标是最终灵敏度为$10^{16}$ $μ$衰变中的一分之一。目前正在建设中的实验的第一阶段，将通过在一年的数据采集中观察$10^{8}$ $μ$每秒的衰变来达到$2.5\times10^{-15}$的分支比灵敏度。基于薄型高压单片有源像素传感器（HV-MAPS）和闪烁定时探测器的高粒度探测器将在这些粒子速率下产生约100 GB/s的数据。基于现场可编程门阵列（FPGA）的Mu3e数据采集系统将从探测器中读出这些数据，并通过使用图形处理单元的过滤器群选择感兴趣的事件，将事件速率降低到100 MB/s。本文介绍了数据采集系统（DAQ）的状态和2021年集成运行的第一批结果，该集成运行首次在Paul Scherrer研究所（PSI）的$π$ E5 μ子束线上运行Mu3e探测器切片。

英文摘要：

The Mu3e experiment at the Paul Scherrer Institute searches for the charged lepton flavor violating decay $μ^+ \rightarrow e^+ e^+ e^-$. The experiment aims for an ultimate sensitivity of one in $10^{16}$ $μ$ decays. The first phase of the experiment, currently under construction, will reach a branching ratio sensitivity of $2.5\times10^{-15}$ by observing $10^{8}$ $μ$ decays per second over a year of data taking. The highly granular detector based on thin high-voltage monolithic active pixel sensors (HV-MAPS) and scintillating timing detectors will produce about 100 GB/s of data at these particle rates. The Field Programmable Gate Array (FPGA) based Mu3e Data Acquisition System will read out this data from the detector and reduce the event rate to 100 MB/s by selecting interesting events using a filter farm of graphics processing units. The paper presents the status of the data acquisition system (DAQ) and first results from the 2021 integration run, which for the first time operated a slice of the Mu3e detector at the $π$E5 muon beam line at the Paul Scherrer Institute (PSI).

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。