1.0 MW pulse power achieved in 105/140 GHz dual-frequency MW-level gyrotron
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摘要:
报道了聚变应用的MW级双频(105/140 GHz)回旋管的最新实验进展。该回旋管的谐振腔、准光模式变换器、输出窗采用了双频共用的设计,电子枪采用了双频复用的双阳极磁控注入枪,收集极采用单极降压。最新的实验表明:在重频1 Hz短脉冲条件下,在105 GHz点和140 GHz点,测试得到脉冲功率分别为710 kW和1.057 MW,对应总效率分别为34%和49%。这是国内首次在回旋管实验中实现1.0 MW功率输出。
Abstract:The progress of the 105/140 GHz MW gyrotron experiment aiming for fusion application is presented. The gyrotron employs dual-frequency design in triode magnetron injection gun, cavity, quasi-optical mode converter and window. In the experiment, pulse power of 710 kW at 105 GHz and 1.057 MW at 140 GHz were achieved at 1 Hz repetitive rate. The total efficiency is 34% and 49%, respectively. The experiment has firstly demonstrated the MW-level power output in the domestic quasi-optical gyrotron tests.
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Key words:
- gyrotron /
- dual-frequency /
- megawatt /
- electron cyclotron heating /
- magnetic confinement fusion
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[1] Nusinovich G S, Thumm M K A, Petelin M I. The gyrotron at 50: historical overview[J]. Journal of Infrared, Millimeter, and Terahertz Waves, 2014, 35(4): 325-381. doi: 10.1007/s10762-014-0050-7 [2] Thumm M K A, Denisov G G, Sakamoto K, et al. High-power gyrotrons for electron cyclotron heating and current drive[J]. Nuclear Fusion, 2019, 59: 073001. doi: 10.1088/1741-4326/ab2005 [3] Kariya T, Imai T, Minami R, et al. Development of over-MW gyrotrons for fusion at 14 GHz to sub-THz frequencies[J]. Nuclear Fusion, 2017, 57: 066001. doi: 10.1088/1741-4326/aa6875 [4] Ikeda R, Kajiwara K, Nakai T, et al. Progress on performance tests of ITER gyrotrons and design of dual-frequency gyrotrons for ITER staged operation plan[J]. Nuclear Fusion, 2021, 61: 106031. doi: 10.1088/1741-4326/ac21f7 [5] Hu Linlin, Sun Dimin, Huang Qili, et al. Design and preliminary test of a 105/140 GHz dual-frequency MW-level gyrotron[J]. Plasma Science and Technology, 2022, 24: 035601. doi: 10.1088/2058-6272/ac2b8f [6] Hu Linlin, Ma Guowu, Sun Dimin, et al. Development of a 28-GHz/50-kW/30-s gyrotron system for fusion application[J]. IEEE Transactions on Plasma Science, 2021, 49(4): 1468-1474. doi: 10.1109/TPS.2021.3066553 [7] 胡林林, 马国武, 孙迪敏, 等. 28 GHz/50 kW准光输出连续波回旋管[J]. 强激光与粒子束, 2019, 31:060101 doi: 10.11884/HPLPB201931.190139Hu Linlin, Ma Guowu, Sun Dimin, et al. A 28 GHz/50 kW continuous wave gyrotron with quasi-optical output[J]. High Power Laser and Particle Beams, 2019, 31: 060101 doi: 10.11884/HPLPB201931.190139 [8] Sun Dimin, Ma Guowu, Huang Qili, et al. Recent results of 28 GHz 400 kW long pulse gyrotrons at IAE-CAEP[C]//2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz). 2021. [9] 黄麒力, 孙迪敏, 马国武, 等. 双频回旋管内置准光模式变换器设计[J]. 强激光与粒子束, 2020, 32:053001 doi: 10.11884/HPLPB202032.190446Huang Qili, Sun Dimin, Ma Guowu, et al. Design of quasi-optical mode converter for dual-frequency gyrotron[J]. High Power Laser and Particle Beams, 2020, 32: 053001 doi: 10.11884/HPLPB202032.190446 [10] 黄麒力, 胡林林, 马国武, 等. 基于量热法的大功率毫米波功率测量及校准系统设计[J]. 强激光与粒子束, 2022, 34:043005Huang Qili, Hu Linlin, Ma Guowu, et al. Design of high power millimeter wave power measurement and calibration system based on calorimetry[J]. High Power Laser and Particle Beams, 2022, 34: 043005