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Fabrication of Liquid Helium-Free Superconducting Magnet for Millimeter Wave Gyrotron |
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| Authors: | N. Sato H. Shimawaki K. Yokoo J. Sakuraba Y. Yamada K. Watanabe |
| Affiliation: | (1) Research Institute of Electrical Communication, Tohoku University, 2-1-1, Katahira, Sendai, 980-8577, Japan;(2) Superconductivity Research Group, Research and Development Center, Sumitomo Heavy Industries, Ltd., 63-30, Yuhigaoka, Hiratsuka, Kanagawa, 254-0806, Japan;(3) Department of Metallurgical Engineering, Faculty of Engineering, Tokai University, 1117, Kita-kaname, Hiratsuka, Kanagawa, 259-1292, Japan;(4) Institute for Materials Research, Tohoku University, 2-1-1, Katahira, Sendai, 980-8577, Japan |
| Abstract: | A liquid helium free superconducting magnet was designed and fabricated and for an application to a millimeter wave gyrotron and a peniotron. The magnet generates a magnetic field of 5T in a 100mm room temperature bore and has been continuously working for more than 5,400 hours without troubles.The magnet system was applied to the millimeter wave gyrotron experiments to confirm the stability of the magnet. In the experiments, stable operations of the gyrotron were achieved in the frequency range of 30 - 133GHz. |
| Keywords: | gyrotron peniotron superconducting magnet |
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