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
Education, Training & Workforce Development
The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
Meeting Spotlight
2027 ANS Winter Conference and Expo
October 31–November 4, 2027
Washington, DC|The Westin Washington, DC 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!
Latest Magazine Issues
Nov 2024
Jul 2024
Latest Journal Issues
Nuclear Science and Engineering
December 2024
Nuclear Technology
Fusion Science and Technology
November 2024
Latest News
Disney World should have gone nuclear
There is extra significance to the American Nuclear Society holding its annual meeting in Orlando, Florida, this past week. That’s because in 1967, the state of Florida passed a law allowing Disney World to build a nuclear power plant.
Seungil Park, Jinhyun Jeong, Won Namkung, Moo-Hyun Cho, Young S. Bae, Won-Soon Han, Hyung-Lyeol Yang
Fusion Science and Technology | Volume 55 | Number 1 | January 2009 | Pages 56-63
Technical Paper | Electron Cyclotron Emission and Electron Cyclotron Resonance Heating | doi.org/10.13182/FST09-A4053
Articles are hosted by Taylor and Francis Online.
An 84-GHz electron cyclotron heating (ECH) system has been installed to assist plasma start-up by preionization in the Korea Superconducting Tokamak Advanced Research (KSTAR) device. The KSTAR 84-GHz ECH system consists of a 500-kW gyrotron, a transmission line, and an antenna system. The wave power is transmitted from the gyrotron to the antenna through an evacuated corrugated circular waveguide of 31.75-mm inner diameter and six miter bends, which include a pair of polarizer miter bends for polarization control. The maximum permitted vacuum pressure without radio-frequency (rf) breakdown in the 31.75-mm waveguide at 84 GHz, 500 kW was calculated to be ~0.1 torr. The pumping time to reach the vacuum pressure of 1 × 10-3 torr in the KSTAR ECH system was ~2 h by two turbomolecular pumps. The transmission efficiency of ~93% from the output of the mirror optical unit to the torus window was measured using a low-power rf source. The wave polarization by a pair of polarizer miter bends with grooved mirrors was tested using the low-power system, and it showed good agreement with numerical calculations. In this paper, we present the design and commissioning results of the KSTAR 84-GHz transmission line.