並列タイトル等Analysis of oscillation characteristic of 300 GHz CW Gyrotron FU CW I
一般注記A 300 GHz CW Gyrotron FU CW I has been developed as a power source for the ceramic sintering and material surface modification with submillimeter wave. Up to now, the usual output power of FU CW I is 1.8 kW, which is rather smaller than the designed power of 3.5 kW. To examine the cause of this problem, we have considered the pitch factor and the misalignment of FU CW I. The pitch factor relates to the efficiency of the oscillation. We have already known the oscillation efficiency decreases with a large auxiliary coil current, Iaux because the pitch factor decreases. Then the experiments without auxiliary coil current have been carried out to improve the oscillation power. However the power did not improve because of increasing potential drop between the anode and the cathode. Moreover the misalignment of FU CW I has been pointed as the cause of the power shortage. For the cases that the axis of gyrotron tube is not parallel to that of the coil, oscillation power at the cavity exit has been calculated with a mode competition code. From the result of the calculations, it is found that the power hardly decreases even if a small misalignment exists in FU CW I.
一次資料へのリンクURLhttps://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=27338&item_no=1&attribute_id=22&file_no=1
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)