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Division Spotlight
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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Latest News
Argonne’s METL gears up to test more sodium fast reactor components
Argonne National Laboratory has successfully swapped out an aging cold trap in the sodium test loop called METL (Mechanisms Engineering Test Loop), the Department of Energy announced April 23. The upgrade is the first of its kind in the United States in more than 30 years, according to the DOE, and will help test components and operations for the sodium-cooled fast reactors being developed now.
R. Krishnamoorthy, S. L. Prathapa Reddy, Ambresh P. Ambalgi, M. Amina Begum
Fusion Science and Technology | Volume 77 | Number 5 | July 2021 | Pages 366-372
Technical Paper | doi.org/10.1080/15361055.2021.1903783
Articles are hosted by Taylor and Francis Online.
This paper presents the generation of modes of angular momentum of the orbital type using a proposed array antenna fed with Rotman lens of multiple layers of compact size. The gain of orbital angular momentum is enhanced by the proposed microstrip antenna, which is a circular array antenna with nine elements fed with Rotman lens utilizing the patch element of high gain. Antenna gain can be enhanced in an effective manner; the patch element is attached with two slots loaded in a stacked patch. The circular array when employing the feeding network with Rotman lens causes excitation of different input ports, which produces carrying beams of orbital angular momentum with mode numbers m = 0, m = ±1, m = ±2, m = ±3, and m = ±4. A phase shift of 160 deg is achieved on the output ports in the adjacent position for meeting the requirement of the phase of orbital angular momentum modes of m = ±4. The detection angle of the ports of the beam and array is adjusted by modifying the Rotman lens for achieving the uniform distribution of amplitude on the output ports of the antenna. Therefore, effective improvement is observed in the radiation pattern of the orbital angular momentum beams, which obtains equal amplitude in all the output ports. The fabrication of a prototype antenna of C band is done, and measurements are performed. Simulated results match the measured results, indicating that generation of orbital angular momentum is done by the antenna proposed in this paper, which can be used in communication systems based on orbital angular momentum.