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 Nuclear Energy Conference & Expo (NECX)
August 24–27, 2026
Dallas, TX|Hilton Anatole
Latest Magazine Issues
Jun 2026
Jan 2026
2026
Latest Journal Issues
Nuclear Science and Engineering
July 2026
Nuclear Technology
June 2026
Fusion Science and Technology
May 2026
Latest News
North American construction is back—smaller and faster—at OPG’s Darlington
“The nuclear renaissance is real here,” said Ontario Power Generation’s Subo Sinnathamby on May 8, one year to the day after OPG secured a final investment decision to build the first of four planned BWRX-300 reactors at its Darlington nuclear power plant, and shortly after the new reactor’s foundation was lifted into place. “We got our license to construct in April and our [final investment decision] in May, and we’ve been off to the races since.”
Mahmoud Z. Youssef, Anil Kumar, Mohamed A. Abdou, Chikara Konno, Fujio Maekawa, Yujiro Ikeda
Fusion Science and Technology | Volume 34 | Number 3 | November 1998 | Pages 953-963
Neutronics Experiments and Analysis (Poster Session) | doi.org/10.13182/FST98-A11963736
Articles are hosted by Taylor and Francis Online.
As part of a collaboration with Japan, the U.S. participated in several fusion integral experiments that simulate the design features of the shielding blanket of the International Thermonuclear Experimental Reactor, ITER. The purpose of these efforts is to resolve the critical issues associated with the neutronics R&D tasks of ITER, among which is the adequacy of the newly developed FENDL-1 database. For that purpose, JAERI has constructed a cylindrical test assembly of dimension 1.2 D × 1.2 L m and made of front multi-layers of SS316 and water with an embedded smaller zone consists of multi-layers of super conducting magnet (SCM) stimulant and SS316. Measured parameters, covering the neutron energy range from 14 MeV down to thermal energy, were taken inside the SS316 and the SCM layers at 9 locations up to a depth of 91.4 cm. In one experiment (Assembly#l), a 1.27 cm B4C + 3.8 cm Pb layer was added in front of the SCM multi-layer zone. This layer is not included in Assembly#2. As in previous experiments, the 14 MeV source is housed inside a source reflector can (20 cm-thick) and located at a distance of 30 cm from the assembly. The U.S. analysis reported here was performed with 175n-42g FENDL/MG-1.0 (multigroup) as well as ENDF/B-VI data using the DORT 2-D code. Analysis was also performed with the Monte Carlo (MC) continuous energy data, FENDL/MC-1.0. The calculated parameters were compared to the following measured data: (a) neutron spectrum below 2 MeV, (b) foil activation rates such as Nb-93(n,2n)Nb-93m, Al-27(n,α)Na-24, In-115(n,n)In-115m, Au-197(n, γ)Au-198, and B-10(n,α)Li-7, (c) fission rate U-235(n,f) and U-238(n,f). (d) gamma-ray spectrum, and (e) gamma-ray heating rate.