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.”
Scott W. Haney, L. John Perkins, John Mandrekas, Weston M. Stacey, Jr.
Fusion Science and Technology | Volume 18 | Number 4 | December 1990 | Pages 606-617
Alpha Particles in Fusion Research | doi.org/10.13182/FST90-A29253
Articles are hosted by Taylor and Francis Online.
Work involving the selection and burn stability control of near-ignited operating points f or the International Thermonuclear Experimental Reactor (ITER) is described. Using simple volume-averaged zero-dimensional transport models, it is suggested that ITER operation at high densities (1 to 2 × 1020/m3) and low temperatures (6 to 10 keV) may be necessary, or even desirable, even though these plasma parameters are intrinsically thermally unstable. It is argued that these thermal instabilities can be effectively controlled using active feedback based on standard diagnostic signals. In particular, the physical and technological feasibility of three control methods, modulation of neutral beam power, modulation of fueling rate, and controlled injection of impurities, is considered, and recommendations regarding the applicability of these methods to ITER are made.