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Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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!
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Dragonfly, a Pu-fueled drone heading to Titan, gets key NASA approval
Curiosity landed on Mars sporting a radioisotope thermoelectric generator (RTG) in 2012, and a second NASA rover, Perseverance, landed in 2021. Both are still rolling across the red planet in the name of science. Another exploratory craft with a similar plutonium-238–fueled RTG but a very different mission—to fly between multiple test sites on Titan, Saturn’s largest moon—recently got one step closer to deployment.
On April 25, NASA and the Johns Hopkins University Applied Physics Laboratory (APL) announced that the Dragonfly mission to Saturn’s icy moon passed its critical design review. “Passing this mission milestone means that Dragonfly’s mission design, fabrication, integration, and test plans are all approved, and the mission can now turn its attention to the construction of the spacecraft itself,” according to NASA.
Sante Cirant, Gabriele D'Antona, Enzo Lazzaro, Gabriella Ramponi
Fusion Science and Technology | Volume 31 | Number 3 | May 1997 | Pages 338-349
Technical Paper | Plasma Engineering | doi.org/10.13182/FST97-A30837
Articles are hosted by Taylor and Francis Online.
The design of a feedback system based on the application of electron cyclotron (EC) current drive in high-density tokamak plasmas is presented. A realistic evaluation is given of the current drive produced by high-power gyrotron tubes for EC-wave beams injected from the low field side in the O-mode polarization. The driven current, calculated using a relativistic analytical formalism along the ray trajectories, is inserted in a consistent theory of nonlinear tearing-mode evolution. Results of modeling calculations are presented, showing the possibility of controlling by means of a digital system the evolution of the width of rotating magnetic perturbations by phase-locked modulation of the gyrotron power source.
