@misc{oai:repo.qst.go.jp:00072297,
 author = {池田, 亮介 and 小田, 靖久 and 小林, 貴之 and 梶原, 健 and 高橋, 幸司 and 森山, 伸一 and 坂本, 慶司 and 池田 亮介 and 小田 靖久 and 小林 貴之 and 梶原 健 and 高橋 幸司 and 森山 伸一 and 坂本 慶司},
 month = {Mar},
 note = {For ITER electron cyclotron heating and current drive system, QST procures 8 sets of 170GHz gyrotrons with output power of more than 1 MW. At present, a gyrotron with high-order volume mode of TE31,11 mode has been developed to realize the output power up to 1.4 MW by reducing the thermal loading at the cavity.stable start-up of main mode and high efficiency oscillations in hard excitation region were achieved. In steady-state operation, operation of 1.0 MW with total efficiency of 46% for 300s was achieved. Over-1MW operation of 1.2 MW for 5s was achieved. In addition, this gyrotron has demonstrated for quad-frequency oscillations., The 6th International Workshop on Far-Infrared Technologies (IW-FIRT 2017)},
 title = {Development of ITER Gyrotron in QST},
 year = {2017}
}