K. Hiyama
University of Tokyo
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Publication
Featured researches published by K. Hiyama.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2011
T. Tomida; Y. Tsuyuguchi; Takahito Arai; Takuya Benno; M. Chikawa; K. Doura; Masaki Fukushima; K. Hiyama; K. Honda; D. Ikeda; John N. S. Matthews; Toru M. Nakamura; Daisuke Oku; H. Sagawa; H. Tokuno; Y. Tameda; G. B. Thomson; Y. Tsunesada; S. Udo; H. Ukai
An atmospheric transparency was measured using a LIDAR with a pulsed UV laser (355 nm) at the observation site of Telescope Array in Utah, USA. The measurement at night for two years in 2007–2009 revealed that the extinction coefficient by aerosol at the ground level is 0.033−0.012+0.016km−1 and the vertical aerosol optical depth at 5 km above the ground is 0.035−0.013+0.019. A model of the altitudinal aerosol distribution was built based on these measurements for the analysis of atmospheric attenuation of the fluorescence light generated by ultra high energy cosmic rays.
Journal of the Physical Society of Japan | 2009
Hisashi Kawai; Sho Yoshida; J. H. Kim; S. Roh; Dongsu Ryu; H. Yoshii; S. Nam; I. H. Park; J. Yang; B.G. Cheon; E.J. Cho; H.B. Kim; J.H. Kim; K. Tanaka; F. Cohen; M. Fukushima; N. Hayashida; K. Hiyama; D. Ikeda; E. Kido; Y. Kondo; T. Nonaka; M. Ohnishi; H. Ohoka; S. Ozawa; H. Sagawa; N. Sakurai; T.-A. Shibata; H. Shimodaira; M. Takeda
The Telescope Array (TA) is a large scale ground experiment in Utah, USA for the measurement of extensive air showers from the ultra-high energy cosmic rays. Its construction is completed in March, 2008 and the data taking started.
Nuclear Physics B - Proceedings Supplements | 2008
H. Kawai; Sho Yoshida; H. Yoshii; K. Tanaka; F. Cohen; M. Fukushima; N. Hayashida; K. Hiyama; D. Ikeda; E. Kido; Y. Kondo; T. Nonaka; M. Ohnishi; H. Ohoka; S. Ozawa; H. Sagawa; N. Sakurai; T.-A. Shibata; H. Shimodaira; M. Takeda; A. Taketa; M. Takita; H. Tokuno; R. Torii; S. Udo; Y. Yamakawa; Hirofumi Fujii; T. Matsuda; M. Tanaka; H. Yamaoka
Physica E-low-dimensional Systems & Nanostructures | 2007
Y. Tameda; F. Kakimoto; Y. Tsunesada; Ryuji Azuma; S. Ogio; Masaki Fukushima; A. Taketa; H. Tokuno; K. Hiyama; J. D. Smith; S.B. Thomas; Manobu Tanaka; T. Matsuda; Kenichi Kadota
