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Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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
Commercial nuclear innovation "new space" age
In early 2006, a start-up company launched a small rocket from a tiny island in the Pacific. It exploded, showering the island with debris. A year later, a second launch attempt sent a rocket to space but failed to make orbit, burning up in the atmosphere. Another year brought a third attempt—and a third failure. The following month, in September 2008, the company used the last of its funds to launch a fourth rocket. It reached orbit, making history as the first privately funded liquid-fueled rocket to do so.
P. K. Sharma
Fusion Science and Technology | Volume 65 | Number 1 | January 2014 | Pages 103-119
Lecture | doi.org/10.13182/FST13-639
Articles are hosted by Taylor and Francis Online.
The lower hybrid current drive (LHCD) system, which is a mature, robust, and reliable heating and current drive system in a large number of tokamaks, is designed, developed, and being commissioned on the steady-state superconducting tokamak (SST-1) for driving 220 kA of plasma current, noninductively, for 1000 s, at nominal plasma parameters (plasma density ∼2×1019 m−3, temperature ∼1 keV, toroidal magnetic field ∼3 T), using four 3.7-GHz, 500-kW continuous wave (cw) klystrons. It employs a conventional grill antenna to launch toroidal lower hybrid waves asymmetrically, with a parallel refractive index N∥ of approximately 2.25 at 90-deg relative phasing of adjacent channels. The system is very complex and requires interfacing with several subsystems such as high-power radio-frequency systems, high-voltage power supply systems, auxiliary power supply systems, efficient thermal management systems, complex networks of transmission line systems, and robust and reliable data acquisition and control systems. With the SST-1 LHCD system as a case study, this lecture gives a broad overview of the physics and design layout of LHCD systems. It addresses cutting-edge technologies employed in realizing the system and gives the present status and advances made for cw operation. The challenges and opportunities are also highlighted.