[O-07] Poster presentations by senior high school students

[O07-P36] Tumulus inspection project by using cosmic-ray muon

*Tomoyo Ishizawa¹, *Satoshi Ono¹, *Asahi Shiozaki¹, *Wakana Yanagimoto¹, *Kenshiro Aoki¹, *Yuna Ishii¹, *Sogo Kimura¹, *Yuki Shimada¹, *Aoi Soga¹, *Yuga Takemori¹, *Rino Tomiku¹, *Kana Hashizume¹, Miki Ohtsuka¹ (1.Waseda University Honjo Senior High School)

Keywords:muography, integration of arts and sciences, cosmic ray, muon, archeology, interdisciplinary

Higashiyatsu tumulus is a round barrow that has a horizontal stone chamber,which is located in our school. We are interested in the tumulus and want to know the details of the inside structure. Since it has great historical value, we decided to use a new method of imaging internal objects without destructing called muography. We have developed a new detector that detects cosmic-ray muons, and the prototype has been constructed. We first set it inside the school building and took data on the time when muons were thought to have passed through the detector.We evaluated the detector performance analyzing the data, and then measured the zenith angle distribution of cosmic-ray muons. In addition to those studies, we have proceeded the investigation of the tumulus itself by searching the historical records. We would like to improve the detector and install it in the tumulus to reconstruct the internal structure in three dimensions in the future.