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November 9–12, 2025
Washington, DC|Washington Hilton
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Fusion Science and Technology
October 2025
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A wave of new U.S.-U.K. deals ahead of Trump’s state visit
President Trump will arrive in the United Kingdom this week for a state visit that promises to include the usual pomp and ceremony alongside the signing of a landmark new agreement on U.S.-U.K. nuclear collaboration.
H. Takahashi, T. Shimozuma, S. Kubo, S. Ito, S. Kobayashi, Y. Yoshimura, H. Igami, Y. Mizuno, Y. Takita, T. Mutoh, T. Kariya, R. Minami, T. Imai
Fusion Science and Technology | Volume 57 | Number 1 | January 2010 | Pages 19-26
Technical Paper | doi.org/10.13182/FST10-A9265
Articles are hosted by Taylor and Francis Online.
A 77-GHz, 1-MW gyrotron is being newly installed in the Large Helical Device not only to enhance the total heating power but also to increase the possibility of controlling the local plasma parameters. Our progress in installing the new gyrotron and evaluating its properties is discussed. We have already finished the installation of the peripheral components, including the transmission line, and conducted a test at 1 MW for a short pulse. Our plan is to operate this gyrotron at a power of up to 1 MW for 5 s. The conditioning of the gyrotron has been smoothly conducted, and a gyrotron output power up to 810 kW for 3.6 s has been achieved so far. The total injected power of electron cyclotron resonance heating to the plasma reached a value of [approximately]2.5 MW.