Japan Geoscience Union Meeting 2023

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Poster

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[O-06] Poster presentations by senior high school students

Sun. May 21, 2023 1:45 PM - 3:15 PM Poster (Exhibition Hall 8, Makuhari Messe)

convener:Tatsuhiko Hara(International Institute of Seismology and Earthquake Engineering, Building Research Institute), Katsuyoshi Michibayashi(Department of Earth and Planetary Sciences, Nagoya University), Miwa Kuri(Japan Meteorological Agency), Keiko Konya(Japan Agency for Marine-Earth Science and Technology)

On-site poster schedule (2023/5/21 13:45-15:15)

1:45 PM - 3:15 PM

[O06-P32] Search for Ultra-High Energy Cosmic Rays with compact cosmic ray detectors

*Chiori Matsushita1, *Rise Nakai1, *Niki Nagata1, Ryuta Saito2, Kazuo Tanaka3 (1. Joshigakuin Senior High school, 2. Tohoku Univ., 3. Waseda Univ.)

Keywords:Cosmic ray, Ultra-High Energy Cosmic Ray


The aim of this study is to measure air showers using small cosmic ray detectors known as Cosmic Watches. Initially, the distance between two Cosmic Watches was varied by several tens of centimeters and measurements were taken. The analysis of the measurement data revealed a decreasing trend in the number of events arriving simultaneously at the two detectors per unit time, as the distance between them increased. It was determined that this decrease was not caused by air shower, but by cosmic rays passing through the two detectors from the side. To mitigate the impact of cosmic rays passing through the detectors from the side, we have prepared two sets of two detectors stacked on top of each other and are currently conducting a similar experiment, this time with cosmic rays only coming from the vertical upward direction.