Christopher Walter, Professor  

Christopher Walter

Office Location: 120 Science Drive, Office 271, Durham, NC 27708
Email Address: chris.walter@duke.edu
Web Page: http://www.phy.duke.edu/~cwalter/

Specialties:
Experimental high energy physics

Education:
Ph.D., California Institute of Technology, 1997
M.S., California Institute of Technology, 1991
B.A., University of California, Santa Cruz, 1989

Research Categories: Experimental Particle Physics, Neutrino Physics, Particle-Astrophysics, Observational Cosmology

Current projects: The Super-Kamiokande Experiment, The T2K Experiment, The Hyper-Kamiokande Experiment, The LSST Dark Energy Science Collaboration

Areas of Interest:
Experimental Particle Physics
Neutrino Physics
Particle-Astrophysics
Observational Cosmology

Recent Publications   (More Publications)

  1. Kitagawa, H; Tada, T; Abe, K; Bronner, C; Hayato, Y; Hiraide, K; Hosokawa, K; Ieki, K; Ikeda, M; Kameda, J; Kanemura, Y; Kaneshima, R; Kashiwagi, Y; Kataoka, Y; Miki, S; Mine, S; Miura, M; Moriyama, S; Nakahata, M; Nakano, Y; Nakayama, S; Noguchi, Y; Okamoto, K; Sato, K; Sekiya, H; Shiba, H; Shimizu, K; Shiozawa, M; Sonoda, Y; Suzuki, Y; Takeda, A; Takemoto, Y; Takenaka, A; Tanaka, H; Watanabe, S; Yano, T; Han, S; Kajita, T; Okumura, K; Tashiro, T; Tomiya, T; Wang, X; Yoshida, S; Megias, GD; Fernandez, P; Labarga, L; Ospina, N; Zaldivar, B; Kearns, E; Raaf, JL; Wan, L; Wester, T; Pointon, BW; Bian, J; Griskevich, NJ; Locke, S; Smy, MB; Sobel, HW; Takhistov, V; Yankelevich, A; Hill, J; Jang, MC; Lee, SH; Moon, DH; Park, RG; Bodur, B; Scholberg, K; Walter, CW; Beauchêne, A; Drapier, O; Giampaolo, A; Mueller, TA; Paganini, P; Quilain, B; Rogly, R; Santos, AD; Nakamura, T; Jang, JS; Machado, LN; Learned, JG; Choi, K; Iovine, N; Cao, S; Anthony, LHV; Marin, D; Prouse, NW; Scott, M; Sztuc, AA; Uchida, Y; Berardi, V; Calabria, NF; Catanesi, MG; Radicioni, E; Langella, A; De Rosa, G; Collazuol, G; Iacob, F; Lamoureux, M; Mattiazzi, M; Ludovici, L, Measurements of the charge ratio and polarization of cosmic-ray muons with the Super-Kamiokande detector, Physical Review D, vol. 110 no. 8 (October, 2024) [doi]  [abs].
  2. Mori, M; Abe, K; Hayato, Y; Hiraide, K; Hosokawa, K; Ieki, K; Ikeda, M; Kameda, J; Kanemura, Y; Kaneshima, R; Kashiwagi, Y; Kataoka, Y; Miki, S; Mine, S; Miura, M; Moriyama, S; Nakano, Y; Nakahata, M; Nakayama, S; Noguchi, Y; Okamoto, K; Sato, K; Sekiya, H; Shiba, H; Shimizu, K; Shiozawa, M; Sonoda, Y; Suzuki, Y; Takeda, A; Takemoto, Y; Takenaka, A; Tanaka, H; Watanabe, S; Yano, T; Han, S; Kajita, T; Okumura, K; Tashiro, T; Tomiya, T; Wang, X; Yoshida, S; Megias, GD; Fernandez, P; Labarga, L; Ospina, N; Zaldivar, B; Pointon, BW; Kearns, E; Raaf, JL; Wan, L; Wester, T; Bian, J; Griskevich, NJ; Locke, S; Smy, MB; Sobel, HW; Takhistov, V; Yankelevich, A; Hill, J; Jang, MC; Lee, SH; Moon, DH; Park, RG; Bodur, B; Scholberg, K; Walter, CW; Beauchêne, A; Drapier, O; Giampaolo, A; Mueller, TA; Santos, AD; Paganini, P; Quilain, B; Rogly, R; Ishizuka, T; Nakamura, T; Jang, JS; Learned, JG; Choi, K; Iovine, N; Cao, S; Anthony, LHV; Martin, D; Scott, M; Sztuc, AA; Uchida, Y; Berardi, V; Catanesi, MG; Radicioni, E; Calabria, NF; Langella, A; Machado, LN; De Rosa, G; Collazuol, G; Iacob, F; Lamoureux, M; Mattiazzi, M; Ludovici, L; Gonin, M; Perisse, L, Development of a Data Overflow Protection System for Super-Kamiokande to Maximize Data from Nearby Supernovae, Progress of Theoretical and Experimental Physics, vol. 2024 no. 10 (October, 2024) [doi]  [abs].
  3. Abe, S; Eizuka, M; Futagi, S; Gando, A; Gando, Y; Goto, S; Hachiya, T; Hata, K; Ichimura, K; Ieki, S; Ikeda, H; Inoue, K; Ishidoshiro, K; Kamei, Y; Kawada, N; Kishimoto, Y; Koga, M; Kurasawa, M; Mitsui, T; Miyake, H; Morita, D; Nakahata, T; Nakajima, R; Nakamura, K; Nakamura, R; Nakane, J; Ozaki, H; Saito, K; Sakai, T; Shimizu, I; Shirai, J; Shiraishi, K; Shoji, R; Suzuki, A; Takeuchi, A; Tamae, K; Watanabe, H; Watanabe, K; Yoshida, S; Umehara, S; Fushimi, K; Kotera, K; Urano, Y; Berger, BE; Fujikawa, BK; Learned, JG; Maricic, J; Fu, Z; Smolsky, J; Winslow, LA; Efremenko, Y; Karwowski, HJ; Markoff, DM; Tornow, W; Dell’Oro, S; O’Donnell, T; Detwiler, JA; Enomoto, S; Decowski, MP; Weerman, KM; Grant, C; Song, H; Li, A; Axani, SN; Garcia, M; Suzuki, S; Abe, K; Bronner, C; Hayato, Y; Hiraide, K; Hosokawa, K; Ieki, K; Ikeda, M; Kameda, J; Kanemura, Y; Kaneshima, R; Kashiwagi, Y; Kataoka, Y; Miki, S; Mine, S; Miura, M; Moriyama, S; Nakahata, M; Nakano, Y; Nakayama, S; Noguchi, Y; Sato, K; Sekiya, H; Shiba, H; Shimizu, K; Shiozawa, M; Sonoda, Y; Suzuki, Y; Takeda, A; Takemoto, Y; Tanaka, H; Yano, T; Han, S, Combined Pre-supernova Alert System with KamLAND and Super-Kamiokande, Astrophysical Journal, vol. 973 no. 2 (October, 2024) [doi]  [abs].
  4. Navas, S; Amsler, C; Gutsche, T; Vogelsang, W; Hanhart, C; Meißner, UG; Hernández-Rey, JJ; Pich, A; Lourenço, C; Ceccucci, A; Doser, M; Ellis, J; Gurtu, A; Höcker, A; Moortgat, F; Moskovic, M; Pietropaolo, F; Roesler, S; Sauli, F; Zimmermann, F; Masoni, A; Mikhasenko, M; Mitchell, RE; Patrignani, C; Schwanda, C; Spanier, S; Venanzoni, G; D’Onofrio, M; Casarosa, G; Cerri, A; Lusiani, A; Signorelli, G; Yuan, CZ; Cao, Z; Zheng, W; Agashe, K; Eno, SC; Aielli, G; Allanach, BC; Alvarez-Muñiz, J; Antonelli, M; Aschenauer, EC; Asner, DM; Assamagan, K; Littenberg, L; Marciano, WJ; Woody, CL; Baer, H; Banerjee, S; Barnett, RM; Bauer, CW; Beringer, J; Bonventre, R; Cahn, RN; Groom, DE; Ligeti, Z; Lin, CJ; Lugovsky, KS; Pianori, E; Robinson, DJ; Seljak, U; White, M; Yao, WM; Zyla, PA; Anderson, J; Kramer, M; Schaffner, P; Baudis, L; Beatty, JJ; Bettini, A; Biebel, O; Black, KM; Cranmer, K; Blucher, E; Carena, M; Rosner, JL; Wakely, SP; Briere, RA; Buckley, A; Miller, DJ; Burkert, VD; Bychkov, MA; Dobrescu, BA; Fava, A; Hsu, L; O’Connell, HB; Pordes, S; Shiltsev, V; Van de Water, R; Zeller, GP; Sozzi, MS; Chivukula, RS; Manohar, AV; Sharma, V; Cowan, G; Crede, V; Cremonesi, O; Nason, P; D’Ambrosio, G; Damour, T, Review of particle physics, Physical Review D, vol. 110 no. 3 (August, 2024), American Physical Society (APS) [doi]  [abs].
  5. Locke, S; Coffani, A; Abe, K; Bronner, C; Hayato, Y; Ikeda, M; Imaizumi, S; Ito, H; Kameda, J; Kataoka, Y; Miura, M; Moriyama, S; Nagao, Y; Nakahata, M; Nakajima, Y; Nakayama, S; Okada, T; Okamoto, K; Orii, A; Pronost, G; Sekiya, H; Shiozawa, M; Sonoda, Y; Suzuki, Y; Takeda, A; Takemoto, Y; Takenaka, A; Tanaka, H; Yano, T; Hirade, K; Kanemura, Y; Miki, S; Watabe, S; Han, S; Kajita, T; Okumura, K; Tashiro, T; Xia, J; Wang, X; Megias, GD; Bravo-Berguño, D; Labarga, L; Marti, L; Zaldivar, B; Pointon, BW; Blaszczyk, FDM; Kearns, E; Raaf, JL; Stone, JL; Wan, L; Wester, T; Bian, J; Griskevich, NJ; Kropp, WR; Mine, S; Smy, MB; Sobel, HW; Takhistov, V; Weatherly, P; Yankelevich, A; Hill, J; Kim, JY; Lim, IT; Park, RG; Bodur, B; Scholberg, K; Walter, CW; Bernard, L; Drapier, O; Hedri, SE; Giampaolo, A; Gonin, M; Mueller, TA; Paganini, P; Quilain, B; Santos, AD; Ishizuka, T; Nakamura, T; Jang, JS; Learned, JG; Anthony, LHV; Sztuc, AA; Uchida, Y; Martin, D; Scott, M; Berardi, V; Catanesi, MG; Radicioni, E; Calabria, NF; Machado, LN; De Rosa, G; Collazuol, G; Iacob, F; Lamoureux, M; Ospina, N; Mattiazzi, M; Ludovici, L; Nishimura, Y; Maewaka, Y; Cao, S, New methods and simulations for cosmogenic induced spallation removal in Super-Kamiokande-IV, Physical Review D, vol. 110 no. 3 (August, 2024), American Physical Society (APS) [doi]  [abs].

Highlight:
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.   I also began the effort in observational cosmology at Duke, joining the Vera C. Rubin Observatory, a giant telescope under construction in Chile designed to make a 10 year, three dimensional survey of the entire visible sky. Using the Rubin Observatory, 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.


Postdocs Mentored

  • Erin O'Sullivan (2014/11-present)  
  • Alex Himmel (2011 - present)  
  • Tarek Akiri (2011 - 2013)  
  • Jennifer Prendki (2010 - 2011)  
  • Roger Wendel (May, 2008 - present)  
  • Maximilien Fechner (2006 - 2008)  
  • Naho Tanimoto (2005 - 2008)