ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
Conference Spotlight
2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
Latest Magazine Issues
Apr 2026
Jan 2026
Latest Journal Issues
Nuclear Science and Engineering
May 2026
Nuclear Technology
March 2026
Fusion Science and Technology
Latest News
Mark your calendar for the 2026 ANS Annual Conference
The American Nuclear Society’s 2026 Annual Conference is coming up fast. From May 31 to June 3, leaders from across the nuclear industry will gather in Denver, Colo., to discuss the state of the industry and emerging opportunities.
To register for the conference, make hotel reservations, and explore the full program, visit ans.org/meetings/ac2026/.
Technical Session
Monday, September 15, 2025|1:00–2:40PM CDT|Grand Salon AB
Session Chair:
Satoshi Gunji
Alternate Chair:
Brittany M. Williamson
Session Organizer:
To access paper attachments, you must be logged in and registered for the meeting.
Register NowLog In
The Pre-service Inspections for the Static Experiment Critical Facility (STACY)
1:00–1:20PM CDT
Kenta Hasegawa (JAEA), Masakazu Seki (JAEA), Eiju Aizawa (JAEA), Masato Sumiya (JAEA), Tomoki Yoshikawa (JAEA), Tomoyuki Maekawa (JAEA), Junichi Ishii (JAEA), Shouhei Araki (JAEA), Kazuhiko Izawa (JAEA), Satoshi Gunji (JAEA)
Paper
Design of Heterogenous Core Configurations with Concrete Rods in the Modified STACY Facility
1:20–1:40PM CDT
B. Dechenaux (ASNR), M. Brovchenko (ASNR), S. Gunji (JAEA), S. Araki (JAEA), K. Suyama (JAEA)
Critical Experiment Analyses in the Modified STACY Core Simulating Fuel Debris
1:40–2:00PM CDT
Shigeki Shiba (Nuclear Regulatory Authority of Japan), Satoshi Gunji (JAEA), Kazuhiko Izawa (JAEA)
Experiments on Concrete-Loaded Core in the Modified STACY
2:00–2:20PM CDT
Shouhei Araki (JAEA), Yu Arakaki (JAEA), Tomoyuki Maekawa (JAEA), Yutaka Kamikawa (JAEA), Kenta Hasegawa (JAEA), Tomoki Yoshikawa (JAEA), Yuta Tada (JAEA), Masato Sumiya (JAEA), Masakazu Seki (JAEA), Eiju Aizawa (JAEA), Junichi Ishii (JAEA), Kazuhiko Izawa (JAEA), Daiki Shiba (NRA), Shigeki Shiba (NRA), Satoshi Gunji (JAEA)
Studies of Nuclear Criticality Safety of Fuel Debris using the Modified STACY Critical Assembly
2:20–2:40PM CDT
Gunji S. (JAEA), Araki S. (JAEA), Yoshikawa T. (JAEA), Arakaki Y. (JAEA), Aizawa E. (JAEA), Seki M. (JAEA), Ishii J. (JAEA), Izawa K. (JAEA), Shiba S. (NRA), Iwahashi D. (NRA)
To join the conversation, you must be logged in and registered for the meeting.