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The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
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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.
S. A. Cherenshchykov
Fusion Science and Technology | Volume 66 | Number 2 | October 2014 | Pages 358-367
Technical Note | doi.org/10.13182/FST13-720
Articles are hosted by Taylor and Francis Online.
The injection of a nonrelativistic electron beam into a toroidal solenoid is considered. A secondary emission magnetron injection gun is proposed as a source of the electron beam. Using the drift approximation, a step value after the first turn of the beam around the solenoid is calculated. For multiturn injection, the beam must not return to the electron gun. Thus, the step value must be large enough by comparison with the gun dimension. Using this condition and the Hull cutoff magnetic field equation, the maximum electrode diameters of the magnetron injection gun are calculated. The maximum gun perveance is calculated using scale theory and experimental data from other authors. Because of the small dimensions of the gun, a concept for a multibeam gun is proposed. As an example, the total current and total power are calculated for two values of the electron beam energy and three operational facilities. In comparison with existing sources for auxiliary plasma heating, a novel approach can provide higher power. The calculated levels of the electric field strength in the gun are several times lower than those achieved in experiments. Prospects for the novel concept for plasma heating and current drive and the problem of gun cooling are discussed. Other possible applications are discussed too.