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

我们一直在发展卡洛里米电子望远镜(CALET)，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搜索暗物质和宇宙射线附近的源。CALET观测预计的事件统计数据是最初计划的气球原型(BCALET)的100倍。此外，CALET还能够以极高的精度进行观测，作为空间实验。通过bCALET气球实验验证了模型的电子观测能力，通过热结构模型的CERN-SPS束流测试和模拟计算研究了飞行模型的性能。我们最终确定，CALET为期五年的任务将在世界上率先实现TeV地区的电子观测。

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.