@article{oai:repo.qst.go.jp:00076432,
 author = {Abbasi, R.U. and Abe, M. and T., Abu-Zayyad and Allen, M. and Azuma, R. and Barcikowski, E. and Belz, J.W. and Bergman, D.R. and Blake, S.A. and Cady, R. and Cheon, B.G. and Chiba, J. and Chikawa, M. and di Matteo, A. and Fujii, T. and Fujita, K. and Fukushima, M. and Furlich, G. and Goto, T. and Hanlon, W. and M. Hayashi and Hayashii, Y. and Hayashida, N. and Hibino, K. and Honda, K. and Ikeda, D. and Inoue, N. and Ishii, T. and Ishimori, R. and Ito, H. and Ivanov, D. and Jeong, H.M. and Jeong, S. and Jui, C.C.H. and Kadota, K. and Kakimoto, F. and O. Kalashev and Kasahara, K. and Kawai, H. and Kawakami, S. and Kawana, S. and Kawata, K. and Kido, E. and Kim, H.B. and Kim, J.H. and J.H. Kim and Kishigamii, S. and Kitamura, S. and Kitamura, Y. and Kuzmin, V. and Kuznetsov, M. and Y.J. Kwon and Lee, K.H. and Lubsandorzhiev, B. and Lundquist, J.P. and Machida, K. and Martens, K. and T. Matsuyama and Matthews, J.N. and Mayta, R. and Minamino, M. and Mukai, K. and Myers, I. and Nagasawa, K. and Nagataki, S. and Ohnishi, M. and Ohoka, H. and Okuda, T. and Omura, Y. and Ono, M. and Onogi, R. and Oshima, A. and Ozawa, S. and Park, I.H. and Piskunov, M.S. and Pshirkov, M.S. and Remington, J. and Rodriguez, D.C. and Rubtsov, G.I. and Ryu, D. and Sagawa, H. and Sahara, R. and Saito, K. and Saito, Y. and Sakaki, N. and Sakurai, N. and Scott, L.M. and Seki, T. and Sekino, K. and Shah, P.D. and Shibata, F. and Shibata, T. and Shimodaira, H. and Shin, B.K. and Shin, H.S. and Smith, J.D. and Sokolsky, P. and Stokes, B.T. and Stratton, S.R. and Stroman, T.A. and Suzawa, T. and Takagi, Y. and Takahashi, Y. and Takamura, M. and Takeda, M. and Takeishi, R. and Taketa, A. and Takita, M. and Tameda, Y. and Tanaka, H. and Tanaka, K. and Tanaka, M. and Thomas, S.B. and Thomson, G.B. and Tinyakov, P. and Tkachev, I. and Tokuno, H. and Tomida, T. and Troitsky, S. and Tsunesada, Y. and Tsutsumi, K. and Uchihori, Y. and Udo, S. and Urban, F. and Wong, T. and Yamamoto, M. and Yamane, R. and Yamaoka, H. and Yamazaki, K. and Yang, J. and Yashiro, K. and Yoneda, Y. and S. Yoshida and Yoshii, H. and Zhezher, Y. and Zundel, Z. and Uchihori, Yukio},
 journal = {Astroparticle Physics},
 month = {Jul},
 note = {We present the results of the search for ultra-high-energy photons with nine years of data from the Telescope Array surface detector. A multivariate classifier is built upon 16 reconstructed parameters of the extensive air shower. These parameters are related to the curvature and the width of the shower front, the steepness of the lateral distribution function, and the timing parameters of the waveforms sensitive to the shower muon content. A total number of two photon candidates found in the search is fully compatible with the expected background. The 95% CL limits on the diffuse flux of the photons with energies greater than 1018.0, 1018.5, 1019.0, 1019.5 and 1020.0 eV are set at the level of 0.067, 0.012, 0.0036, 0.0013, 0.0013km−2yr−1sr−1 correspondingly.},
 pages = {8--14},
 title = {Constraints on the diffuse photon flux with energies above 10(18) eV using the surface detector of the Telescope Array experiment},
 volume = {110},
 year = {2019}
}