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
Conference on Nuclear Training and Education: A Biennial International Forum (CONTE 2025)
February 3–6, 2025
Amelia Island, FL|Omni Amelia Island Resort
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
February 2025
Nuclear Technology
Fusion Science and Technology
Latest News
A more open future for nuclear research
A growing number of institutional, national, and funder mandates are requiring researchers to make their published work immediately publicly accessible, through either open repositories or open access (OA) publications. In addition, both private and public funders are developing policies, such as those from the Office of Science and Technology Policy and the European Commission, that ask researchers to make publicly available at the time of publication as much of their underlying data and other materials as possible. These, combined with movement in the scientific community toward embracing open science principles (seen, for example, in the dramatic rise of preprint servers like arXiv), demonstrate a need for a different kind of publishing outlet.
W. A. Houlberg
Fusion Science and Technology | Volume 39 | Number 2 | March 2001 | Pages 403-407
Advanced Designs | doi.org/10.13182/FST01-A11963268
Articles are hosted by Taylor and Francis Online.
Plasma startup and operating issues are examined for a burning plasma using WHIST [1] simulations of the Fusion Ignition Research Experiment (FIRE) design [2]. Fueling and density profile control issues are illustrated through pellet launch from the inboard side of the plasma. Auxiliary fast wave ion cyclotron heating and current drive are used to identify plasma startup and burn control issues. It is shown that the current rampup and bootstrap current strongly influence the evolution of the safety factor, and can be tailored to produce sawtooth-free operation for about 20 seconds of burn in well-confined high confinement mode (H-mode) plasmas. Furthermore, it is also possible to maintain a reversed magnetic configuration that could allow access to the improved core confinement seen in present experiments. Access to H-mode operation is influenced by the fueling, heating and current startup waveforms. Maintenance of H-mode conditions may require either hysterisis in the high to low confinement (H-L) back-transition or continued auxiliary heating if the fusion power is insufficient.
