3. Gyrotrons
3.1 Gyrotron operating principle
Like magnetrons, gyrotrons are oscillators (they hang on noise), except that they are used at much higher frequencies (between 50 and 200 GHz, sometimes below, increasingly above). They deliver fantastic power (up to 2 MW CW) and are reserved for very specific applications, some of which are important enough to be presented here.
Example:
In the case of thermonuclear fusion, there will be around twenty gyrotrons to power the ITER reactor.
Developed around 1958 in the USA and the USSR, their operation is complex, and we'll only give a simplified overview. Electrons are generated by an impregnated cathode, and accelerated by a gun. They...
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Gyrotrons
Other electronic tube families
Bibliography
Events
The proceedings issue of the IVEC (International Vacuum Electronics Conference, an annual event sponsored by the IEEE) is the essential publication for keeping abreast of developments in electronic tube technologies and their applications.
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This country-by-country list of players in the industry is as comprehensive as possible, but there are bound to be a few omissions, which the author hopes will not be held against him. The differences in size between these players are not indicated, but they can be significant.
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