Initial test results from the HDL-Varian injection-locked, conventional emission, high power magnetron program

Summary form only given, as follows. The HDL-Varian high-power magnetron program is unique in the HPM (high-power magnetron) field in that established crossed-field tube technologies are being exploited in order to circumvent many of the difficulties inherent in other HPM sources. Instead of using explosive field emission cathodes, short pulse lengths, and extremely high voltages, operation is with secondary emission cathodes, carefully conditioned high vacuum surfaces, and more moderate DC and RF fields. As a result, typical crossed-field tube properties are expected, including long pulse lengths, high efficiency, relatively low operating voltages and magnetic fields, and high phase stability and control using well isolated low-power RF drivers. High efficiency and moderate voltages allow for the use of proven high-repetition-rate modulator technology. An 18-vane rising sun magnetron was investigated