Global scaling principle for simulation of powerful klystrons with high efficiency

The Global Scaling Principle (GSP) is formulated. GSP allows to build a 2,5-parametric class of klystrons fully equivalent to one given prototype. Klystrons included in the constructed class, may differ significantly on the operating frequency, power, voltage, according to the number of rays and other key parameters. At the same time all the physical processes in a class of devices are identical. Accordingly, all klystron output characteristics of a class, including efficiency, gain, bandwidth, etc., are absolutely identical. GSP is very useful for the 2D-simulatiom of multi-beam klystrons. In this case GSP-analog is simulated instead of the initial multi beam klystron.