The trial of cosmic ray measurement performed by students at the summit of Mt. Fuji

Abstract

  In summer of 2006, 2007, and 2009, we measured gamma-rays and muons of cosmic-ray by means of a portable Si detector (Hakarukun) and time coincidence method with two GMs, respectively, on the top of Mt. Fuji in Japan. As we were ascending the mountain the radiation was rising. Moreover, we tried to calibrate the altitude on altimeters we used on Mt. Fuji. Also, we made a challenge to build an original time coincidence equipment which we assembled by our-selves and we succeeded to measure the cosmic-rays with it.