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.
Division Spotlight
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
Meeting Spotlight
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott 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!
Latest Magazine Issues
Jun 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
August 2025
Nuclear Technology
July 2025
Fusion Science and Technology
Latest News
DOE opens Milestone fusion pilot plant program to new companies and teams
Eight companies were chosen to develop fusion pilot plant designs through the Department of Energy’s Milestone-Based Fusion Development Program just over two years ago. It wasn’t until June 2024 that the DOE announced that protracted negotiations over program metrics had been concluded. Now, two years on, the original eight are “making great progress,” according to Colleen Nehl, program manager for public-private partnerships in the DOE’s Office of Fusion Energy Sciences (FES). Nehl spoke during a June 4 webinar convened on short notice to discuss the latest fusion Milestone news: a fast-tracked opportunity for additional teams to access remaining Fiscal Year 2025 funding for the Milestone program.
John Parmentola, John Rawls
Fusion Science and Technology | Volume 61 | Number 1 | January 2012 | Pages 9-14
Plenary | Proceedings of the Fifteenth International Conference on Emerging Nuclear Energy Systems | doi.org/10.13182/FST12-A13389
Articles are hosted by Taylor and Francis Online.
Nuclear power has much to offer in addressing the nation's energy security needs in an environmentally acceptable manner. But today's fission technology cannot accomplish this without adding to the ever-increasing volume of high-level waste; these waste concerns may be the limiting factor in the use of nuclear power. Breeder reactors had been considered as a way to solve this problem; however, because of cost and proliferation concerns, breeders are increasingly unlikely to be commercialized. In an attempt to allow nuclear power to reach its full economic potential, General Atomics is developing the Energy Multiplier Module (EM2). EM2 is a gas-cooled compact fast reactor that augments its fissile fuel load with either spent fuel or depleted uranium. This provides the additional fertile material to allow the reactor to both create and burn fuel in situ. This results in a core that will last decades without fuel supplementation or shuffling. The end-of-cycle fuel can be treated in a manner that does not separate actinides, permitting reuse in subsequent generations at reduced proliferation risk. Proliferation resistance is further enhanced because no enrichment is required beyond that needed for the first generation fuel load. Waste problems are mitigated by several factors: higher burnup, fuel use in multiple generations, and conversion of existing waste to energy.