MPFS FOR A TERAHERTZ MICROWAVE AMPLIFIER

The paper considers the possibility of creating a magnetic periodic focusing system (MPFS) with a non-sinusoidal distribution of the axial component of magnetic field induction, designed to transport an electron stream in an extended channel of an electron-optical system (EOS) of a vacuum microwave amplifier designed to operate in the 220 GHz band. The design of an MPFS with the third spatial harmonic of a magnetic field with a magnetic field amplitude equal to 0.6 TL and a period of 16 mm has been carried out. Calculations of electron flow transportation with a current of 0.14 A at an accelerating voltage of 22.4 kV in a span channel of 0.4 mm with a magnetic field parameter of 0.9 are presented.