ECH用極低温型高周波真空窓の開発

概要

論文の詳細を見る
A cryogenic window of a single sapphire disk cooled at the edge fo 1MW class, 110 GHz and CW RF power with an HE_<11> mode has been fabricated. The disk is operated at the temperature of 11 K by using a compact cryo-refrigerator available for remote handling. It was demonstrated firstly that the window at the cryogenic temperature performed for RF power of 〜400 kW and pulse duration of 1 sec and 〜100 kW and 5.4 sec, which were limited by RF source. The loss rate of RF power at the window was evaluated around 0.04% for RF power less than 400 kW and the temperature range of 13 〜 25 K. It was confirmed that additional RF power deposited due to effects of condensation of any gases on the window disk can be diminished by baking and aging of the disk.
社団法人プラズマ・核融合学会の論文
1995-08-25