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Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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Latest News
Proving DRACO will deliver
The United States is now closer than it has been in over five decades to launching the first nuclear thermal rocket into space, thanks to DRACO—the Demonstration Rocket for Agile Cislunar Orbit.
M. Kawai, N. Akino, N. Ebisawa, L. Grisham, M. Hanada, A. Honda, T. Inoue, M. Kazawa, K. Kikuchi, M. Kuriyama, N. Kusanagi, K. Mogaki, K. Noto, T. Ohga, K. Ooshima, Y. Tanai, N. Umeda, K. Usui, T. Yamamoto, H. Yamazaki, K. Watanabe
Fusion Science and Technology | Volume 44 | Number 2 | September 2003 | Pages 508-512
Technical Paper | Fusion Energy - Plasma Engineering, Heating, and Current Drive | doi.org/10.13182/FST03-A387
Articles are hosted by Taylor and Francis Online.
The negative-ion based neutral beam injection system developed by JAERI for JT-60U has been intended to generate a 500 keV and 10 MW beam for 10 seconds with two ion sources. Technical efforts to decrease heat loads on the accelerator grids, to improve non-uniformity of the source plasma, to increase voltage holding of the accelerator, and to optimize the operational parameters have been conducted intensively. A step-down control of the filament voltage was very effective to keep the acceleration current constant during the pulse duration. To suppress degradation of voltage holding of the accelerator, protection spark gaps of ~178 kV for each stage, its gap length is 73 mm, were confirmed to be effective.As results of these improvements, as of June 2002, the maximum injection power has reached 6.2 MW, and a pulse length has attained 10 seconds of the design value with a 2.6 MW beam.