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Development of a 500 MW, one-microsecond, multi-kiloampere relativistic klystron amplifier.

机译：开发了一个500 MW，一微秒，几千安培相对论速调管放大器。

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摘要

his work presents research on the one-microsecond, L-band relativistic klystron amplifier (RKA) project conducted at Los Alamos National Laboratory. A collection of theoretical analyses is presented for rf cavities, intense electron beams, beam-cavity interactions, and small-signal klystron bunching. Electromagnetic field simulations were done for three dimensional cavity structures using HFSS with very accurate results. Particle-in-cell simulations of the complete RKA were done using the two dimensional code ISIS. Extraction efficiency for intense modulated beams is discussed and verified in simulations. Designs for input and idler cavities are reviewed. Extremely low-Q, single-gap, output cavities are investigated for coupling rf power from very low-impedance, modulated, electron beams.;Output cavities with a Q less than 4 have been designed, measured, and tested. Methods were implemented for designing 2D equivalent output cavity structures to model 3D structures in 2D codes. A technique for ex-situ rf conditioning of the output cavity gap pieces is presented. A beam-pipe center conductor, intended to reduce the space-charge potential depression of the beam, is discussed. Diagnostics for intense-beam and high-power rf measurements are presented.;A coaxial directional coupler and load, capable of handling more than 500 MW at 1300 MHz, were designed. Mode conversion from coax to waveguide is discussed for ;A 650 kV, 5 kA, one-microsecond, annular beam has been produced from a stainless-steel, explosive-field-emission cathode. The beam current was modulated up to 70%
机译：他的工作介绍了在洛斯阿拉莫斯国家实验室进行的1微秒L波段相对论速调管放大器（RKA）项目的研究。提出了一系列有关射频腔，强电子束，束腔相互作用和小信号速调管聚束的理论分析。使用HFSS对三维空腔结构进行了电磁场仿真，结果非常准确。使用二维码ISIS对整个RKA进行了单元内粒子模拟。讨论并验证了强调制光束的提取效率。审查了输入腔和惰轮腔的设计。研究了极低Q，单间隙的输出腔，用于耦合来自非常低阻抗的调制电子束的射频功率;已设计，测量和测试了Q小于4的输出腔。实施了用于设计2D等效输出腔结构以2D代码建模3D结构的方法。提出了一种用于输出腔间隙件的异位射频调节的技术。讨论了旨在减少束的空间电荷电势下降的束管中心导体。介绍了用于强光束和大功率射频测量的诊断程序。设计了同轴定向耦合器和负载，该负载在1300 MHz下能够处理500 MW以上的功率。讨论了从同轴电缆到波导的模式转换；从不锈钢爆炸场发射阴极产生了650 kV，5 kA，1微秒的环形束。光束电流调制高达70％

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  • 作者

    Haynes, William Brian.;

  • 作者单位

    Rice University.;

  • 授予单位 Rice University.;
  • 学科 Engineering Electronics and Electrical.;Physics Electricity and Magnetism.;Physics Fluid and Plasma.
  • 学位 Ph.D.
  • 年度 1996
  • 页码 255 p.
  • 总页数 255
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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