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
Human Factors, Instrumentation & Controls
Improving task performance, system reliability, system and personnel safety, efficiency, and effectiveness are the division's main objectives. Its major areas of interest include task design, procedures, training, instrument and control layout and placement, stress control, anthropometrics, psychological input, and motivation.
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!
Latest Magazine Issues
Apr 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
May 2025
Nuclear Technology
April 2025
Fusion Science and Technology
Latest News
General Kenneth Nichols and the Manhattan Project
Nichols
The Oak Ridger has published the latest in a series of articles about General Kenneth D. Nichols, the Manhattan Project, and the 1954 Atomic Energy Act. The series has been produced by Nichols’ grandniece Barbara Rogers Scollin and Oak Ridge (Tenn.) city historian David Ray Smith. Gen. Nichols (1907–2000) was the district engineer for the Manhattan Engineer District during the Manhattan Project.
As Smith and Scollin explain, Nichols “had supervision of the research and development connected with, and the design, construction, and operation of, all plants required to produce plutonium-239 and uranium-235, including the construction of the towns of Oak Ridge, Tennessee, and Richland, Washington. The responsibility of his position was massive as he oversaw a workforce of both military and civilian personnel of approximately 125,000; his Oak Ridge office became the center of the wartime atomic energy’s activities.”
Sergey V. Shchepetov, Aleksandr B. Kuznetsov, Dmitrii Yu. Sychugov
Fusion Science and Technology | Volume 27 | Number 3 | April 1995 | Pages 455-458
Magnetohydrodynamic Equilibrium And Stability | doi.org/10.13182/FST95-A11947127
Articles are hosted by Taylor and Francis Online.
Here we present the principle of operation of fast algorithm based on the selection of few toroidal harmonics which visibly affect the plasma boundary and discuss the influence of the plasma induced magnetic fields on the shape and sizes of plasma boundary. The existing moderate pressure profile dependence increases as one passes from the shearless system to the system with large shear. Traditional methods for combating plasma induced changes in magnetic configurations by external axisymmetric magnetic fields are analyzed. It is shown that the quadrupole field can not only restore the rotational transform profile but usually visibly destroys external magnetic surfaces. An ill-posed problem of MHD stellarator equilibria identification from the external measurements is investigated and the possibility to restore the plasma profiles in the frame of a two-parametric set of functions using the system of local probes is discussed.
In the second part of the work we generalize the well-known method of flux coordinates for investigation of plasmas with nested magnetic surfaces to compute large-scale magnetic islands. The method for computing structures with several magnetic axes using non-single valued flux coordinates is discussed.