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Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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Conference on Nuclear Training and Education: A Biennial International Forum (CONTE 2025)
February 3–6, 2025
Amelia Island, FL|Omni Amelia Island Resort
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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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Fusion Science and Technology
Latest News
Fermilab center renamed after late particle physicist Helen Edwards
Fermi National Accelerator Laboratory’s Integrated Engineering Research Center, which officially opened in January 2024, is now known as the Helen Edwards Engineering Center. The name was changed to honor the late particle physicist who led the design, construction, commissioning, and operation of the lab’s Tevatron accelerator and was part of the Water Resources Development Act signed by President Biden in December 2024, according to a Fermilab press release.
Y. U. Nam
Fusion Science and Technology | Volume 55 | Number 2 | February 2009 | Pages 180-184
Technical Paper | Seventh International Conference on Open Magnetic Systems for Plasma Confinement | doi.org/10.13182/FST09-A7009
Articles are hosted by Taylor and Francis Online.
A 280 GHz single-channel horizontal millimeter-wave interferometer system has been installed for plasma electron density measurements on the Korea Superconducting Tokamak Advanced Research (KSTAR). An electron density of plasma is measured on double-path horizontal line with triangular geometry. A cassette system contains two vacuum windows was installed on median port for these purpose. Maximum line-integrated electron density of first plasma is set to 1019 m-2 in this geometry. Since a line density of single-fringe in 280 GHz is 2 × 1018 m-2, a multi-fringe counting circuit has been adopted for a fringe-jump compensation. Measured IF signals are divided into 4 channels which has fringe counting capability of 1, 2, 4 and 8 fringes, respectively. A phase difference between IF signals is converted to DC voltage in each channel according to its fringe coverage. A fringe-jump analysis algorism has been developed for a discrimination of real fringe-jump from noise signal. An electron density of the KSTAR first plasma has been measured and analyzed using this system. Upon these results, an advanced fringe counting scheme will be proposed in this paper.
