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Division Spotlight
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
Meeting Spotlight
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
Latest Magazine Issues
Feb 2025
Jul 2024
Latest Journal Issues
Nuclear Science and Engineering
March 2025
Nuclear Technology
Fusion Science and Technology
February 2025
Latest News
Colin Judge: Testing structural materials in Idaho’s newest hot cell facility
Idaho National Laboratory’s newest facility—the Sample Preparation Laboratory (SPL)—sits across the road from the Hot Fuel Examination Facility (HFEF), which started operating in 1975. SPL will host the first new hot cells at INL’s Materials and Fuels Complex (MFC) in 50 years, giving INL researchers and partners new flexibility to test the structural properties of irradiated materials fresh from the Advanced Test Reactor (ATR) or from a partner’s facility.
Materials meant to withstand extreme conditions in fission or fusion power plants must be tested under similar conditions and pushed past their breaking points so performance and limitations can be understood and improved. Once irradiated, materials samples can be cut down to size in SPL and packaged for testing in other facilities at INL or other national laboratories, commercial labs, or universities. But they can also be subjected to extreme thermal or corrosive conditions and mechanical testing right in SPL, explains Colin Judge, who, as INL’s division director for nuclear materials performance, oversees SPL and other facilities at the MFC.
SPL won’t go “hot” until January 2026, but Judge spoke with NN staff writer Susan Gallier about its capabilities as his team was moving instruments into the new facility.
26th Technology of Fusion Energy Meeting (TOFE 2024)
Education
Ph.D., Engineering, Nagoya University, Nagoya, Japan (Mar. 2011)
M.S., Engineering, Nagoya University, Nagoya, Japan (Mar. 2008)
College of Science and Engineering, Ritsumeikan University, Kusatsu, Japan (Apr. 2003- Mar. 2005)
Accelerated promotion for the Master course in Nagoya University (Apr. 2006)
Current study
Study of energetic particle confinement in magnetic confinement fusion devices using comprehensive energetic ion and neutron diagnostics
Research on the interaction between energetic particles and magnetohydrodynamic waves in fusion plasma
Neutron diagnostics development based on leading-edge technologies toward fusion burning plasma study
Research on aneutronic fusion plasma
Recent major publications
1. R. M. Magee, K. Ogawa, T. Tajima, I. Allfrey,H. Gota, P. McCarroll,S. Ohdachi, M. Isobe, S. Kamio, V. Klumper, H. Nuga, M. Shoji, S. Ziaei, M. W. Binderbauer, and M. Osakabe, “First measurements of p11B fusion in a magnetically confined plasma”, Nature Communications 14 (2023) 955.
2. K. Ogawa, M. Isobe, S. Kamio, H. Nuga, R. Seki, S. Sangaroon, H. Yamaguchi, Y. Fujiwara, E. Takada, S. Murakami, J. Jo, Y. Takemura, H. Sakai, K. Tanaka, T. Tokuzawa, R. Yasuhara, and M. Osakabe, “Studies of energetic particle transport induced by multiple Alfvén eigenmodes using neutron and escaping energetic particle diagnostics in Large Helical Device deuterium plasmas” Nuclear Fusion 62 (2022) 112001.
3. K. Ogawa, M. Isobe, H. Nuga, S. Kamio, Y. Fujiwara, M. I. Kobayashi, S. Sangaroon, E. Takada, R. Seki, H. Yamaguchi, J. Jo, and M. Osakabe, “A study of beam ion and deuterium-deuterium fusion born triton transports due to energetic particle driven magnetohydrodynamic instability in the Large Helical Device deuterium plasmas”, Nuclear Fusion 61 (2021) 096035.
4. K. Ogawa, M. Isobe, S. Sugiyama, H. Matsuura, D. A. Spong, H. Nuga, R. Seki, S. Kamio, Y. Fujiwara, H. Yamaguchi, M. Osakabe, and LHD Experiment Group, “Energetic particle transport and loss induced by helically-trapped energetic-ion-driven resistive interchange modes in the Large Helical Device”, Nuclear Fusion 60 (2020) 112011.
5. K. Ogawa, M. Isobe, T. Nishitani, S. Murakami, R. Seki, H. Nuga, S. Kamio, Y. Fujiwara, H. Yamaguchi, Y. Saito, S. Maeta, M. Osakabe, and LHD Experiment Group, “Energetic ion confinement studies using comprehensive neutron diagnostics in the Large Helical Device”, Nuclear Fusion 59 (2019) 076017. Highlighted by Nature Physics 15 (2019) 622.
Major awards
1. The 18th Young Scientist Award of the Physical Society of Japan (March 2024)
2. AAPPS-DPP Young Research Award 2022 (October 2022) by Division of Plasma Physics Association of Asia Pacific Physical Societies
3. 2021 Masaji Yoshikawa Memorial Prize for Fusion Energy Award (March 2022) by Fusion Energy Forum of Japan
4. The JSPF Award for Excellence in Research Publication (November 2021) by the Japan Society of Plasma Science and Nuclear Fusion Research
5. The JSPF Award for Excellent Technology in Industries (November 2021) by the Japan Society of Plasma Science and Nuclear Fusion Research
Last modified May 21, 2024, 4:07pm CDT
