KLOE-2高能标签探测器
The KLOE-2 High Energy Tagger Detector
摘要：
为了完全重建到反应e+e-到e+ e-gamma-gamma在phi介子产生的能量区域中，必须沿DAFNE束线安装新的探测器以探测散射的e+e-。高能标记器（HET）探测器通过确定轻子的位置和时间来测量轻子与其主轨道的偏差，从而标记伽马-伽马物理事件并将其从背景中分离出来。HET探测器放置在DAFNE偶极磁体的出口处，距离IP 11 m，位于正电子和电子线上。HET敏感区域由一组28个塑料散热器组成。基于Xilinx Virtex-5 FPGA的专用DAQ电子板已开发用于该检测器。它为MultiHit TDC提供了500 ps量级的时间分辨率，并且可以在任何2.5 ns内获取数据，从而可以清楚地识别正确的聚束交叉。第一个结果的调试运行。
英文摘要：
In order to fully reconstruct to the reaction e+e- to e+e- gamma-gamma in the energy region of the phi meson production, new detectors along the DAFNE beam line have to be installed in order to detect the scattered e+e-. The High Energy Tagger (HET) detector measures the deviation of leptons from their main orbit by determining their position and timing so to tag gamma-gamma physics events and disentangle them from background. The HET detectors are placed at the exit of the DAFNE dipole magnets, 11 m away from the IP, both on positron and electron lines. The HET sensitive area is made up of a set of 28 plastic scintillators. A dedicated DAQ electronics board based on a Xilinx Virtex-5 FPGA have been developed for this detector. It provides a MultiHit TDC with a time resolution of the order of 500 ps and the possibility to acquire data any 2.5 ns, thus allowing to clearly identify the correct bunch crossing. First results of the commissioning run are presented.
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。
