Development of new non-destructive analysis method by muonic X-ray imaging for extraterrestrial samples

In 2020’s, the asteroid explorer “Hayabusa-2” will return to the earth and will bring extraterrestrial samples containing organics and water-related materials. We are aiming at applying a non-destructive muonic X-ray imaging method to the return-sample analysis in ~ 0.1 wt% accuracy. For this purpose, we are developing a new detector system composed of a new Ge detector array with Compton suppressor and a multi-wire drift chamber with a low-material component. Here, we propose a performance test of newly developed detectors with the muon beam and demonstrate the advanced muonic X-ray imaging for well-known sample in a practical condition before the explorer returns.