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
Nuclear Nonproliferation Policy
The mission of the Nuclear Nonproliferation Policy Division (NNPD) is to promote the peaceful use of nuclear technology while simultaneously preventing the diversion and misuse of nuclear material and technology through appropriate safeguards and security, and promotion of nuclear nonproliferation policies. To achieve this mission, the objectives of the NNPD are to: Promote policy that discourages the proliferation of nuclear technology and material to inappropriate entities. Provide information to ANS members, the technical community at large, opinion leaders, and decision makers to improve their understanding of nuclear nonproliferation issues. Become a recognized technical resource on nuclear nonproliferation, safeguards, and security issues. Serve as the integration and coordination body for nuclear nonproliferation activities for the ANS. Work cooperatively with other ANS divisions to achieve these objective nonproliferation policies.
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
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
J. Kißlinger, T. Andreeva
Fusion Science and Technology | Volume 50 | Number 3 | October 2006 | Pages 382-386
Technical Paper | Stellarators | doi.org/10.13182/FST06-A1259
Articles are hosted by Taylor and Francis Online.
The superconducting magnet system of Wendelstein 7-X (W7-X) consists of five identical field periods (modules). Magnetic field errors arise if the modules are not exactly identical. Even small deviations in the coil shapes of the same type or misalignments of coils or modules break the periodicity of the system and cause error field components.Simulation of the magnetic field perturbations that are expected has been done by the analysis of existing winding packages and statistical extrapolations of inaccuracies expected during assembly steps. A numerical experiment has shown that assembly errors should contribute significantly more than manufacturing errors of individual coils.Compensation of the magnetic field perturbation can be done with the help of the coil adjustment during the assembly or by the individual adjustment of all five modules. Further compensation of field errors is possible with additional coils. The existing control coils in W7-X can be used for error field compensation; however, their efficacy is limited. Therefore, solutions employing normal-conducting trim coils outside the cryostat vessel are also considered here.
