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
Accelerator Applications
The division was organized to promote the advancement of knowledge of the use of particle accelerator technologies for nuclear and other applications. It focuses on production of neutrons and other particles, utilization of these particles for scientific or industrial purposes, such as the production or destruction of radionuclides significant to energy, medicine, defense or other endeavors, as well as imaging and diagnostics.
Meeting Spotlight
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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Nuclear Science and Engineering
May 2025
Nuclear Technology
April 2025
Fusion Science and Technology
Latest News
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
T. D. Bohm, M. E. Sawan, P. Wilson
Fusion Science and Technology | Volume 56 | Number 2 | August 2009 | Pages 731-735
Nuclear Analysis | Eighteenth Topical Meeting on the Technology of Fusion Energy (Part 2) | doi.org/10.13182/FST09-A8995
Articles are hosted by Taylor and Francis Online.
Gaps exist between the first wall/shield (FWS) modules of ITER to allow for fitting by remote handling equipment. Simplified three-dimensional models were used at the top and mid-plane locations to analyze gap streaming. Heating, helium production, and fast neutron fluence were examined at the front of the vacuum vessel and the magnet for both straight and stepped gaps. In addition, total nuclear heating values in the inboard magnet and central solenoid were examined for straight and stepped vertical gaps and for combined horizontal and vertical straight gaps. The results show significant radiation streaming effects that are more pronounced for fast neutron fluence and helium production. Furthermore, it was found that stepping the gap significantly reduces the local peaking, but has little effect on the relative average values of radiation effects. The results also show increases up to 75% in total magnet heating at the inboard mid-plane location for a straight 2 cm combined vertical and horizontal gap.
