Christopher Walter

Christopher Walter

Professor of Physics

Office Location: 
Box 90305 Physics Department, Duke University, Durham, NC 27710
Front Office Address: 
Box 90305, Durham, NC 27708-0305
Phone: 
(919) 660-2535

Overview

I am a professor in the physics department studying particle physics and cosmology. I try to understand both the nature of the ghostly particles called neutrinos in giant detectors deep underground, and why the expansion of the universe is accelerating using telescopes on top of mountains.   My background and training is originally in particle physics and I was part of the team that showed the sub-atomic particles called neutrinos have mass.  The leader of our team, T. Kajita was co-awarded the 2015 Nobel Prize in Physics for this discovery which cited the work of our collaboration.  Recently, I started an effort in observational cosmology at Duke, joining the Large Synoptic Survey Telescope (LSST) project, a giant  telescope that will be located in Chile designed to make a 10 year, three dimensional survey of the entire visible sky.  In LSST, we will focus on examining billions of galaxies, along with supernovae and other astronomical probes to try to determine the nature of the mysterious “Dark Energy” which is unaccountably causing the universe to pushed apart at a faster and faster rate.

Education & Training

  • Ph.D., California Institute of Technology 1997

  • M.S., California Institute of Technology 1991

  • B.A., University of California at Santa Cruz 1989

Iida, T, and Bays, K. "A Search for supernova relic neutrinos at Super-Kamiokande." Journal of Physics: Conference Series 203 (2010). Full Text

Fechner, M, and Walter, CW. "The physics impact of proton track identification in future megaton-scale water Cherenkov detectors." Journal of High Energy Physics 2009.11 (December 1, 2009). Full Text

Andreopoulos, C, Gallagher, H, Hayato, Y, Sobczyk, JT, Walter, C, and Zeller, S. "The path forward: Monte Carlo convergence discussion." Aip Conference Proceedings 1189 (December 1, 2009): 312-319. Full Text

Fechner, M, Abe, K, Hayato, Y, Iida, T, Ikeda, M, Kameda, J, Kobayashi, K, Koshio, Y, Miura, M, Moriyama, S, Nakahata, M, Nakayama, S, Obayashi, Y, Ogawa, H, Sekiya, H, Shiozawa, M, Suzuki, Y, Takeda, A, Takenaga, Y, Takeuchi, Y, Ueno, K, Ueshima, K, Watanabe, H, Yamada, S, Hazama, S, Higuchi, I, Ishihara, C, Kajita, T, Kaneyuki, K, Mitsuka, G, Nishino, H, Okumura, K, Tanimoto, N, Vagins, MR, Dufour, F, Kearns, E, Litos, M, Raaf, JL, Stone, JL, Sulak, LR, Wang, W, Goldhaber, M, Dazeley, S, Svoboda, R, Bayes, K, Casper, D, Cravens, JP, Kropp, WR, Mine, S, Regis, C, Smy, MB, Sobel, HW, Ganezer, KS, Hill, J, Keig, WE, Jang, JS, Kim, JY, Lim, IT, Scholberg, K, Walter, CW, Wendell, R, Tasaka, S, Learned, JG, Matsuno, S, Watanabe, Y, Hasegawa, T, Ishida, T, Ishii, T, Kobayashi, T, Nakadaira, T, Nakamura, K, Nishikawa, K, Oyama, Y, Sakashita, K, Sekiguchi, T, Tsukamoto, T, Suzuki, AT, Minamino, A, Nakaya, T, Yokoyama, M, Fukuda, Y, Itow, Y, and Tanaka, T. "Kinematic reconstruction of atmospheric neutrino events in a large water Cherenkov detector with proton identification." Physical Review D Particles, Fields, Gravitation and Cosmology 79.11 (June 22, 2009). Full Text

Watanabe, H, Zhang, H, Abe, K, Hayato, Y, Iida, T, Ikeda, M, Kameda, J, Kobayashi, K, Koshio, Y, Miura, M, Moriyama, S, Nakahata, M, Nakayama, S, Obayashi, Y, Ogawa, H, Sekiya, H, Shiozawa, M, Suzuki, Y, Takeda, A, Takenaga, Y, Takeuchi, Y, Ueno, K, Ueshima, K, Yamada, S, Hazama, S, Higuchi, I, Ishihara, C, Kajita, T, Kaneyuki, K, Mitsuka, G, Nishino, H, Okumura, K, Tanimoto, N, Clark, S, Desai, S, Dufour, F, Kearns, E, Likhoded, S, Litos, M, Raaf, J, Stone, JL, Sulak, LR, Wang, W, Goldhaber, M, Bays, K, Casper, D, Cravens, JP, Dunmore, J, Griskevich, J, Kropp, WR, Liu, DW, Mine, S, Regis, C, Smy, MB, Sobel, HW, Ganezer, KS, Hill, J, Keig, WE, Jang, JS, Jeong, IS, Kim, JY, Lim, IT, Fechner, M, Scholberg, K, Walter, CW, Wendel, R, Tasaka, S, Guillian, G, Learned, JG, Matsuno, S, Messier, MD, Watanabe, Y, Hasegawa, T, Ishida, T, Ishii, T, Kobayashi, T, Nakadaira, T, Nakamura, K, Nishikawa, K, Oyama, Y, Sakashita, K, Sekiguchi, T, Tsukamoto, T, Suzuki, AT, Ichikawa, AK, and Minamino, A. "First study of neutron tagging with a water Cherenkov detector." Astroparticle Physics 31.4 (May 1, 2009): 320-328. Full Text

Nishino, H, Clark, S, Abe, K, Hayato, Y, Iida, T, Ikeda, M, Kameda, J, Kobayashi, K, Koshio, Y, Miura, M, Moriyama, S, Nakahata, M, Nakayama, S, Obayashi, Y, Ogawa, H, Sekiya, H, Shiozawa, M, Suzuki, Y, Takeda, A, Takenaga, Y, Takeuchi, Y, Ueno, K, Ueshima, K, Watanabe, H, Yamada, S, Hazama, S, Higuchi, I, Ishihara, C, Kajita, T, Kaneyuki, K, Mitsuka, G, Okumura, K, Tanimoto, N, Vagins, MR, Dufour, F, Kearns, E, Litos, M, Raaf, JL, Stone, JL, Sulak, LR, Wang, W, Goldhaber, M, Dazeley, S, Svoboda, R, Bays, K, Casper, D, Cravens, JP, Kropp, WR, Mine, S, Regis, C, Smy, MB, Sobel, HW, Ganezer, KS, Hill, J, Keig, WE, Jang, JS, Kim, JY, Lim, IT, Fechner, M, Scholberg, K, Walter, CW, Wendell, R, Tasaka, S, Learned, JG, Matsuno, S, Watanabe, Y, Hasegawa, T, Ishida, T, Ishii, T, Kobayashi, T, Nakadaira, T, Nakamura, K, Nishikawa, K, Oyama, Y, Sakashita, K, Sekiguchi, T, Tsukamoto, T, Suzuki, AT, Minamino, A, Nakaya, T, Yokoyama, M, Fukuda, Y, Itow, Y, Tanaka, T, Jung, CK, Lopez, G, McGrew, C, Terri, R, Yanagisawa, C, Tamura, N, Idehara, Y, Sakuda, M, Kuno, Y, Yoshida, M, Kim, SB, Yang, BS, Ishizuka, T, Okazawa, H, Choi, Y, Seo, HK, Furuse, Y, Nishijima, K, Yokosawa, Y, Koshiba, M, Totsuka, Y, Chen, S, Heng, Y, Yang, Z, Zhang, H, Kielczewska, D, Thrane, E, Wilkes, RJ, and Super-Kamiokande Collaboration, . "Search for proton decay via p-->e+pi0 and p-->micro+pi0 in a large water Cherenkov detector." Physical Review Letters 102.14 (April 8, 2009): 141801-null. Full Text

Thrane, E, Abe, K, Hayato, Y, Iida, T, Ikeda, M, Kameda, J, Kobayashi, K, Koshio, Y, Miura, M, Moriyama, S, Nakahata, M, Nakayama, S, Obayashi, Y, Ogawa, H, Sekiya, H, Shiozawa, M, Suzuki, Y, Takeda, A, Takenaga, Y, Takeuchi, Y, Ueno, K, Ueshima, K, Watanabe, H, Yamada, S, Vagins, MR, Hazama, S, Higuchi, I, Ishihara, C, Kajita, T, Kaneyuki, K, Mitsuka, G, Nishino, H, Okumura, K, Tanimoto, N, Dufour, F, Kearns, E, Litos, M, Raaf, JL, Stone, JL, Sulak, LR, Goldhaber, M, Bays, K, Casper, D, Cravens, JP, Kropp, WR, Mine, S, Regis, C, Smy, MB, Sobel, HW, Ganezer, KS, Hill, J, Keig, WE, Jang, JS, Jeong, IS, Kim, JY, Lim, IT, Fechner, M, Scholberg, K, Walter, CW, Wendell, R, Tasaka, S, Learned, JG, Matsuno, S, Watanabe, Y, Hasegawa, T, Ishida, T, Ishii, T, Kobayashi, T, Nakadaira, T, Nakamura, K, Nishikawa, K, Oyama, Y, Sakashita, K, Sekiguchi, T, Tsukamoto, T, Suzuki, AT, Ichikawa, AK, Minamino, A, Nakaya, T, Yokoyama, M, and Dazeley, S. "Search for neutrinos from GRB 080319B at super-kamiokande." Astrophysical Journal 697.1 (January 1, 2009): 730-734. Full Text

Thrane, E, Abe, K, Hayato, Y, Iida, T, Ikeda, M, Kameda, J, Kobayashi, K, Koshio, Y, Miura, M, Moriyama, S, Nakahata, M, Nakayama, S, Obayashi, Y, Ogawa, H, Sekiya, H, Shiozawa, M, Suzuki, Y, Takeda, A, Takenaga, Y, Takeuchi, Y, Ueno, K, Ueshima, K, Watanabe, H, Yamada, S, Vagins, MR, Hazama, S, Higuchi, I, Ishihara, C, Kajita, T, Kaneyuki, K, Mitsuka, G, Nishino, H, Okumura, K, Tanimoto, N, Dufour, F, Kearns, E, Litos, M, Raaf, JL, Stone, JL, Sulak, LR, Goldhaber, M, Bays, K, Casper, D, Cravens, JP, Kropp, WR, Mine, S, Regis, C, Smy, MB, Sobel, HW, Ganezer, KS, Hill, J, Keig, WE, Jang, JS, Jeong, IS, Kim, JY, Lim, IT, Fechner, M, Scholberg, K, Walter, CW, Wendell, R, Tasaka, S, Learned, JG, Matsuno, S, Watanabe, Y, Hasegawa, T, Ishida, T, Ishii, T, Kobayashi, T, Nakadaira, T, Nakamura, K, Nishikawa, K, Oyama, Y, Sakashita, K, Sekiguchi, T, Tsukamoto, T, Suzuki, AT, Ichikawa, AK, Minamino, A, Nakaya, T, Yokoyama, M, and Dazeley, S. "Search for astrophysical neutrino point sources at super-kamiokande." Astrophysical Journal 704.1 (January 1, 2009): 503-512. Full Text

Choubey, S, Hernández, P, and Walter, CW. "Summary of working group I: Theory." 10th International Workshop on Neutrino Factories, Super Beams and Beta Beams, Nufact08 (December 1, 2008).

Rodriguez, A, Whitehead, L, Alcaraz, JL, Andringa, S, Aoki, S, Argyriades, J, Asakura, K, Ashie, R, Berghaus, F, Berns, H, Bhang, H, Blondel, A, Borghi, S, Bouchez, J, Burguet-Castell, J, Casper, D, Catala, J, Cavata, C, Cervera, A, Chen, SM, Cho, KO, Choi, JH, Dore, U, Espinal, X, Fechner, M, Fernandez, E, Fujii, Y, Fukuda, Y, Gomez-Cadenas, J, Gran, R, Hara, T, Hasegawa, M, Hasegawa, T, Hayato, Y, Helmer, RL, Hiraide, K, Hosaka, J, Ichikawa, AK, Iinuma, M, Ikeda, A, Ishida, T, Ishihara, K, Ishii, T, Ishitsuka, M, Itow, Y, Iwashita, T, Jang, HI, Jeon, EJ, Jeong, IS, Joo, KK, Jover, G, Jung, CK, Kajita, T, Kameda, J, Kaneyuki, K, Kato, I, Kearns, E, Kim, CO, Khabibullin, M, Khotjantsev, A, Kielczewska, D, Kim, JY, Kim, SB, Kitching, P, Kobayashi, K, Kobayashi, T, Konaka, A, Koshio, Y, Kropp, W, Kudenko, Y, Kuno, Y, Kurimoto, Y, Kutter, T, Learned, J, Likhoded, S, Lim, IT, Loverre, PF, Ludovici, L, Maesaka, H, Mallet, J, Mariani, C, Matsuno, S, Matveev, V, McConnel, K, McGrew, C, Mikheyev, S, Minamino, A, Mine, S, Mineev, O, Mitsuda, C, Miura, M, Moriguchi, Y, Moriyama, S, Nakadaira, T, Nakahata, M, Nakamura, K, Nakano, I, and Nakaya, T. "Measurement of single charged pion production in the charged-current interactions of neutrinos in a 1.3GeV wide band beam." Physical Review D Particles, Fields, Gravitation and Cosmology 78.3 (August 7, 2008). Full Text

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