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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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Powering the future: How the DOE is fueling nuclear fuel cycle research and development
As global interest in nuclear energy surges, the United States must remain at the forefront of research and development to ensure national energy security, advance nuclear technologies, and promote international cooperation on safety and nonproliferation. A crucial step in achieving this is analyzing how funding and resources are allocated to better understand how to direct future research and development. The Department of Energy has spearheaded this effort by funding hundreds of research projects across the country through the Nuclear Energy University Program (NEUP). This initiative has empowered dozens of universities to collaborate toward a nuclear-friendly future.
Zhongliang Lv, Zhong Chen, Zijia Zhao, Dongmei Pan, Lichao Tian, Xiaohu Yang
Nuclear Technology | Volume 208 | Number 11 | November 2022 | Pages 1721-1733
Technical Paper | doi.org/10.1080/00295450.2022.2061257
Articles are hosted by Taylor and Francis Online.
The multibeam concept for the accelerator-driven subcritical reactor (ADS) has advantages in the power distribution of the core, and it could reduce the requirement of proton beam current intensity for each beam. In comparison with the single-beam concept, the multibeam concept could also reduce the thermal load of the beam window significantly. This paper focuses on the study of external source effects for different multibeam concepts for an ADS for nuclear waste transmutation (ADS-NWT). The different multibeam concepts include the three-beam, four-beam, six-beam, and seven-beam concepts for the ADS-NWT. By using the calculation tools FLUKA and SuperMC with the nuclear data library ENDF/B-VII.1, the variations of the keff and total power, as the function of the position of the spallation targets, are provided for each multibeam concept. The results show that the keff and total power were affected by an interference effect between the spallation targets. For the transport of fission neutrons in the core, the maximum radius of the interference effect between the spallation targets was 40 cm. Considering the transport of spallation neutrons in the ADS-NWT, the maximum radius of the interference effect between the spallation targets was 60 cm. The spallation targets were moved from the inner circle to the outer circle of the fuel zone, and the different variations in keff and total power trend for the three-beam, four-beam, six-beam, and seven-beam concepts for the ADS-NWT were obtained.
