CARM and harmonic gyro-amplifier experiments at 17 GHz

Proceedings of International Conference on Particle Accelerators Pub Date : 1993-05-17 DOI:10.1109/PAC.1993.309418

W. Menninger, B. Danly, S. Alberti, C. Chen, E. Giguet, J. Rullier, R. Temkin

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引用次数: 4

Abstract

Cyclotron resonance maser amplifiers are possible sources for applications such as electron cyclotron resonance heating of fusion plasmas and driving high-gradient rf linear accelerators. For accelerator drivers, amplifiers or phase locked-oscillators are required. A 17 GHz cyclotron autoresonance maser (CARM) amplifier experiment and a 17 GHz third harmonic gyro-amplifier experiment are presently underway at the MIT plasma Fusion Center. Using the SRL/MIT SNOMAD II induction accelerator to provide a 380 kV, 180 A, 30 ns flat-top electron beam, the gyro-amplifier experiment has produced 5 MW of rf power with over 50 dB of gain at 17 GHz. The gyro-amplifier operates in the TE/sub 31/ mode using a third harmonic interaction. Because of its high power output, the gyroamplifier will be used as the rf source for a photocathode rf electron gun experiment also taking place at MIT. Preliminary gyro-amplifier results are presented, including measurement of rf power, gain versus interaction length, and the far-field pattern. A CARM experiment designed to operate in the TE/sub 11/ mode is also discussed.<>

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17 GHz下的CARM和谐波陀螺放大器实验

回旋共振脉泽放大器是电子回旋共振加热聚变等离子体和驱动高梯度射频线性加速器等应用的可能来源。对于加速器驱动器，需要放大器或锁相振荡器。一个17ghz回旋自共振脉泽(CARM)放大器实验和一个17ghz三次谐波陀螺放大器实验目前正在麻省理工学院等离子体聚变中心进行。利用SRL/MIT的snoad II感应加速器提供380 kV, 180 a, 30 ns的平顶电子束，陀螺放大器实验在17 GHz下产生了5 MW的射频功率，增益超过50 dB。陀螺放大器使用三次谐波相互作用在TE/sub 31/模式下工作。由于其高功率输出，陀螺放大器将被用作光电阴极射频电子枪实验的射频源，也正在麻省理工学院进行。给出了陀螺放大器的初步结果，包括射频功率、增益与相互作用长度的关系以及远场方向图的测量。本文还讨论了在TE/sub - 11/模式下设计的CARM实验。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of International Conference on Particle Accelerators

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