Design of 95 GHz, 2 MW Gyrotron for Communication and Security Applications

Abstract

The design and the numerical simulation of the 95 GHz, 2 MW gyrotron for various kinds of communication, sensing and security applications is presented. The gyrotron is designed for the TE 24,8 operating mode. Various in-house developed and commercially available computer codes are used for the design purpose. A 4.25 MW electron gun is designed for the 2 MW of output power. The mode selection, cold cavity and the beam-wave interaction analysis are discussed for the design of weakly tapered open resonator type of interaction cavity. The parametric analysis of the interaction cavity and the electron gun is also presented.

A Feasibility Study of Beam-Wave Interaction in 670 GHz Gyrotron for Radioactive Material Detection Application

“…13,14) Here, in case of 670 GHz gyrotron with the output power around 300 kW, TE 25;10 mode is analyzed in terms of mode selection parameters such as space charge effect (discussed in x4), the ohmic wall loading, the start oscillation current, etc., by using the in-house developed code GCOMS. 15,16) Particle-in-cell (PIC) numerical approach based code MAGIC is used in the beam-wave interaction simulations. 17) Parametric analysis is also performed considering the power and efficiency as main parameters.…”

Electron beam emission and interaction of double-beam gyrotron

“…The Particle-in-Cell (PIC) code MAGIC is used for the beamwave interaction computation and the optimization of electron beam parameters [25]. The PIC code is successfully implemented in the beam-wave interaction computation and cavity design for low power, low frequency [26] and high power, high frequency gyrotrons [27,28] for single-beam operation. The rigorous simulations are performed for different values of electron beam currents at first and second radial maxima of the operating mode considering the maximum interaction efficiency and output power.…”