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首页> 外文学位 >THE GYROTRON: AN APPLICATION OF THE RELATIVISTIC BUNCHING OF ELECTRONS TO THE GENERATION OF INTENSE MILLIMETER MICROWAVE RADIATION (CYCLOTRON, WAVE, MASER, BEAM, FAST).
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THE GYROTRON: AN APPLICATION OF THE RELATIVISTIC BUNCHING OF ELECTRONS TO THE GENERATION OF INTENSE MILLIMETER MICROWAVE RADIATION (CYCLOTRON, WAVE, MASER, BEAM, FAST).

机译：陀螺：电子的相对论束在产生强毫米级微波辐射（回波，波，脉冲，光束，光束，快速）中的应用。

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摘要

The cyclotron maser or gyrotron is capable of generating high power microwaves at millimeter wave frequencies for applications in fusion heating, radar astronomy and communications. Analytic and numerical simulation models are developed which describe the behavior of these devices under realistic laboratory conditions including the effects of circuit geometry, beam thermal spread and mode competition. In Chapter 2, a generalized linear theory for the gyrotron is presented in the form of an integro-differential equation which can be solved within various circuit geometries thus describing gyro-amplifiers, gyro-oscillators and gyroklystrons. In Chapter 3 a complete description of a finite size electromagnetic particle simulation model is presented which describes gyrotrons operating in a TE(,mn) waveguide mode. The resulting computer code is a "stretched" version of a 1-3/2 D particle code which apart from modelling transient self-consistent wave beam dynamics includes the essential effects of arbitrary conducting boundaries without requiring a full 2D simulation. The code also allows simultaneous multi-mode interaction.; In Chapter 4 simulations and theoretical analysis are made of gyrotron amplifiers operating in the TE(,01) mode to predict bandwidth gain and efficiency with particular attention to the stabilization of absolute instabilities through frequency selective loss. In Chapter 5 the linear eigenmodes and eigenfrequencies of gyrotron oscillators are examined including the effects of beam loading and circuit geometry. Oscillation threshold currents are obtained. The design analysis and predicted efficiencies of gyrotron oscillators operating in the TE(,021) mode with output powers of at least 200 kW are obtained from particle simulations. In Chapter 6 the experimental development of a GHz gyrotron is presented including the design of the magnetron injection gun, circuit, collector and window. Theoretical and numerical predictions of oscillation thresholds and efficiencies compare favorably with experimental data. In particular, powers of 270 kW and efficiencies of 45% from experiment are in good agreement with computer results.
机译：回旋加速器或回旋加速器能够产生毫米波频率的高功率微波，用于聚变加热，雷达天文学和通信。开发了解析和数值仿真模型，这些模型描述了这些设备在实际实验室条件下的行为，包括电路几何形状，光束热扩散和模式竞争的影响。在第2章中，以积分微分方程的形式介绍了回旋管的广义线性理论，该方程可以在各种电路几何形状内求解，从而描述了回旋放大器，回旋振荡器和回旋速调管。在第3章中，将对有限尺寸的电磁粒子仿真模型进行完整描述，该模型描述了以TE（，mn）波导模式运行的回旋管。生成的计算机代码是1-3 / 2 D粒子代码的“拉伸”版本，除了对瞬态自洽光束动力学建模之外，还包括任意导电边界的基本效果，而无需进行完整的2D模拟。该代码还允许同时进行多模式交互。在第4章中，对以TE（，01）模式工作的回旋放大器进行了仿真和理论分析，以预测带宽增益和效率，并特别注意通过频率选择性损耗来稳定绝对不稳定性。在第5章中，对回旋振荡器的线性本征模式和本征频率进行了研究，其中包括光束载荷和电路几何形状的影响。获得振荡阈值电流。通过粒子模拟获得了在TE（021）模式下工作且输出功率至少为200 kW的回旋振荡器的设计分析和预测效率。在第6章中，将介绍GHz回旋管的实验开发，包括磁控管注入枪，电路，收集器和窗口的设计。振荡阈值和效率的理论和数值预测与实验数据相比具有优势。特别是，实验得出的270 kW功率和45％的效率与计算机结果非常吻合。

著录项

  • 作者

    CAPLAN, MALCOLM.;

  • 作者单位

    University of California, Los Angeles.;

  • 授予单位 University of California, Los Angeles.;
  • 学科 Physics Fluid and Plasma.
  • 学位 Ph.D.
  • 年度 1986
  • 页码 342 p.
  • 总页数 342
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 等离子体物理学;
  • 关键词

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