Search for dark matter and cosmic-ray nearby sources by observing high energy electrons and positrons

我们一直在研制量热电子望远镜，以便通过在国际空间站的日本实验舱上观测高能电子和正电子来寻找暗物质和宇宙射线的近源。CALET观测的事件统计数据比原计划的球载原型（bCALET）多100倍。此外，CALET还能够作为空间实验进行高精度观测。通过bCALET气球实验验证了该模型的电子观测能力，并通过CERN SPS束流测试和模拟计算验证了飞行模型的热结构性能。我们最终确定，CALET的五年使命将在世界上首次实现TeV区的电子观测。

We have been developing the CALorimetric Electron Telescope (CALET) to search for dark matter and cosmic-ray nearby sources by observing high energy electrons and positrons on the Japanese Experiment Module of the International Space Station. The event statistics expected by the CALET observation is 100 times more than that by the balloon-borne prototype (bCALET) which had been originally scheduled. CALET is moreover capable of carrying out an observation with excellent accuracy as a space experiment. The capability for electron observation was proven by the bCALET balloon experiment, and the performance of flight model was investigated by the CERN-SPS beam test of the thermal-structure model and the simulation calculation. We have finally confirmed that the five-year mission of CALET will achieve the electron observation in the TeV region first in the world.