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Fusion Science and Technology
Latest News
Securing the advanced reactor fleet
Physical protection accounts for a significant portion of a nuclear power plant’s operational costs. As the U.S. moves toward smaller and safer advanced reactors, similar protection strategies could prove cost prohibitive. For tomorrow’s small modular reactors and microreactors, security costs must remain appropriate to the size of the reactor for economical operation.
Kiyoshi Yatsu, Leonid G. Bruskin, Teruji Cho, Minoru Hamada, Mafumi Hirata, Hitoshi Hojo, Makoto Ichimura, Kameo Ishii, Khairul M. Islam, Akiyoshi Itakura, Isao Katanuma, Yasuhito Kiwamoto, Junko Kohagura, Shigeyuki Kubota, Atsushi Mase, Yousuke Nakashima, Teruo Saito, Yoshiteru Sakamoto, Teruo Tamano, Yoshinori Tatematsu, Tokihiko Tokuzawa, Masayuki Yoshikawa
Fusion Science and Technology | Volume 35 | Number 1 | January 1999 | Pages 52-59
Invited Lectures | doi.org/10.13182/FST99-A11963826
Articles are hosted by Taylor and Francis Online.
Potential confinement of an ICRF-heated high-ion temperature plasma in GAMMA 10 is experimentally studied. The potential confinement was shown from data of one-end plugging and both-end plugging. The waveform of end loss current and an analysis of end loss ion energies have also indicated potential formation and confinement. The central cell line density increases 50% by the potential confinement. Some radial losses were observed in the anchor and/or plug/barrier regions and a rate of the radial loss was measured by using the data from one-end plugging. Under an experimental condition, the radial loss rate was estimated to be about 3%. In order to reduce the radial loss, conducting plates were installed adjacent to the plasma in the anchor transition region. The density increase of 60 % was attained after installation of the conducting plates and a higher density increase can be expected in the near future. The density increase was 50% before installation of the conducting plates. Controllability and reproducibility of the potential confinement are also improved after installation of the conducting plates.