GENERATION OF ELECTRON BEAMS IN MAGNETRON GUNS WITH SECONDARY EMISSION CATHODES OF A SMALL DIAMETER

This paper is concerned with investigations on electron beam generation in magnetron guns with cold secondary-emission metallic cathodes of a small diameter with a large aspect ratio. The parameters of electron beams are given as a function of electric and magnetic field values using different methods of voltage pulse formation for secondary-electron multiplication and beam generation

GENERATION OF ELECTRON BEAMS IN MAGNETRON GUNS WITH SECONDARY EMISSION CATHODES OF A SMALL DIAMETER

This paper is concerned with investigations on electron beam generation in magnetron guns with cold secondary-emission metallic cathodes of a small diameter with a large aspect ratio. The parameters of electron beams are given as a function of electric and magnetic field values using different methods of voltage pulse formation for secondary-electron multiplication and beam generation

Klystron Modulator For Industrial Linac

Date is given on research, development and testing of the HV-modulator with the following parameters: anode voltage up to 270kV, pulsed current up to 230 A, pulse width 5 s, repetition rate 300 Hz. Described are structural peculiarities aimed at enhancing the efficiency of pulse-forming, and results are presented of operational test on a working facility. 1.INTRODUCTION In accordance with the program of upgrading the 2 GeV linear accelerator as injector for pulse-stretcher ring PSR-2000 [1], and, later, as warranted by the need of design and manufacture of industrial electron linacs with high average beam power and beam energy 10-15 MeV, we carry on research and development on rf-systems, in particular, modulators with pulsed power up to 70 MW and average power more 100 kW enough to drive the klystron tubes shown in Table 1. Table 1: Main parameters of the high power klystron tubes. Description AURORA ARKHAR Operating Freq.(MHz) 2,797 2,797 Peak Power (MW) 20 18 Average Power(kW..