Development of High-precision Muon Polarimeter for the Time Reversal Invariance Violation Search Experiment

计划在J-Parc E06实验(在Kaon衰变中寻找T破坏)中精确测量Muon自旋极化。我们为这项实验研制了一台Muon偏振仪。旋光仪由阻挡入射月光的介子阻止器和探测衰变正电子的漂移室和一个介子场磁铁组成。根据模拟计算，构建了1/5模型和全尺寸模型作为原型，并用实际的Muon束流进行了测试。可以确认良好的性能，并收集重要数据。

It is planned to measure muon spin polarization precisely in the J-PARC E06 experiment (Search for T violation in Kaon Decays). We developed a muon polarimeter for this experiment. The polarimeter consists of muon stoppers to stop incident moonbeams and drift chambers to detect decay positrons, and a muon field magnet. According to simulation calculations, a 1/5 model and then a full-size model have been constructed as prototypes and tested with an actual muon beam. Good performance could be confirmed and important data were collected.