Study of Quark-Antiquark Structure of the Proton by FNAL Drell-Yan Experiment E906

我们为美国费米实验室的SeaQuest（E906）实验建立了一台测量质子和中子中反夸克的μ子对谱仪。特别是，我们在日本制造了一个漂移室，并将其空运到美国。我们在2012年进行了一次束流时间测试，并确认了μ子对谱仪的性能。我们完成了光谱仪主要部件的准备工作，用于2013 -2015年的物理运行。

We built a muon-pair spectrometer for the measurement of anti-quark in the proton and neutron for SeaQuest(E906) experiment at Fermilab in USA. In particular, we fabricated a drift chamber in Japan and transported it by airplane to USA. We had a test beamtime in2012 and confirmed the performance of the muon-pair spectrometer. We completed the preparation of the major parts of the spectrometer for the physics run which takes place in2013-2015.