PFC / JA - 90 - 43 Induction Linac Driven Relativistic

PFC / JA - 93 - 25 ITER Millimeter - Wave CTS Diagnostic Option

Localized alpha-particle velocity distribution and density, ion temperature, DT fuel ratio, and internal magnetic field pitch angle can all be potentially diagnosed by a collective Thomson scattering system. Relativistic electron cyclotron calculations and TORAY ray tracing for 6 tesla ITER parameters indicate that 90 GHz is an optimum frequency for this diagnostic. With 400 kW at the plasma an...

PFC / JA - 90 - 27 A Stability Criterion for Energetic Particle - Alfv 6 n Modes

Preprint PFC/JA-83-7 RADIATION MEASUREMENTS FROM AN INVERTED RELATIVISTIC MAGNETRON

We report microwave emission measurements from an inverted relativistic magnetron comprising an outer cylindrical field emission cathode and an inner coaxial anode with embedded vane resonators. The magnetron operates in the w mode at a frequency of %3.6GHz, and voltages of 1-2MV. The RF power is %500MW.

PFC/JA-92-26 Growth and Saturation of Stimulated Beam Modulation in a Two-Stream Relativistic Klystron Amplifier

A novel two-stream relativistic klystron amplifier (RKA) is presented in which the amplification of stimulated beam modulation is achieved via the unstable two-stream interaction rather than the use of passive cavities. After a calculation of the limiting current, the amplification and saturation of the stimulated beam modulation are analyzed using a cold-fluid model and particle-in-cell simula...

Pfc/ja-90- 44 Linear and Nonlinear Theory of Cyclotron Autoresonance Masers with Multiple Waveguide Modes

The interaction of multiple waveguide modes with a relativistic electron beam in an overmoded, single-frequency, cyclotron autoresonance maser amplifier is analyzed using a nonlinear self-consistent model and kinetic theory. It is shown analytically, and confirmed by simulation, that all of the coupled waveguide modes grow at the spatial growth rate of the dominant unstable mode, but suffer dif...