Design, development and characterisation of an Electron gun- collector module for a 42GHz 200kW gyrotron

Abstract

GYROTRON is a high power, millimeter wave oscillator and maintains distinct edge over its other counterparts since inception around five decades ago. The application spectrum of gyrotron is continuously expanding covering variety of fields. Some of the major scientific applications covering particle accelerators to thermonuclear plasma fusion devices and plasma diagnostics, strategic applications covering radar to missile guidance, industrial applications from millimeter wave controlled heating to material processing and ceramic sintering, medical applications through spectroscopy, etc. Interest in gyrotron research found a quantum jump after its direct use in global activity, such as, International Thermonuclear Experimental Reactor (ITER) program which was started to create Tokamak (artificial sun), collectively with USA,Russia, European Union, China, Japan, South Korea and India as global partners, to create the facility to produce electricity from fusion power with an aim to solve the problem of future energy generation to a great extent. Seeing the importance of gyrotron in today and future time, India has also started an activity through a multi-institutional project on gyrotron, namely,“Design and development of 42 GHz, 200 kW gyrotron”. Gyrotron is a new device from Indian research point of view and thus a lot of skill and knowledge are to be required for design and development of this class of device and thus the author is fascinated to select the research topic around the gyrotron development. The research work is distributed into seven Chapters of the thesis, summarized and concluded in brief as follows.