Formation of Sheet Helical Electron Beams for High-Power Planar Gyrotrons

Planar magnetron-injection gun forming a powerful (3 MW) sheet helical electron beam (HEB) for 140 GHz gyrotron was designed. Modified scheme of an electron beam analyzer based on the retarding electric field method was developed to measure the electron beam characteristics, including pitch-factor a...

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Bibliographic Details
Published in:IEEE electron device letters 2022-07, Vol.43 (7), p.1121-1124
Main Authors: Kuftin, A. N., Manuilov, V. N., Zaslavsky, V. Yu, Leshcheva, K. A., Ginzburg, N. S.
Format: Article
Language:English
Subjects:
Cathodes
Cyclotron resonance devices
Electric fields
Electron beams
Gyrotrons
Magnetic field measurement
Magnetic fields
magnetron injection gun
planar gyrotron
Powerful millimeter and submillimeter radiation
Shape
sheet helical electron beam
Velocity measurement
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Summary:Planar magnetron-injection gun forming a powerful (3 MW) sheet helical electron beam (HEB) for 140 GHz gyrotron was designed. Modified scheme of an electron beam analyzer based on the retarding electric field method was developed to measure the electron beam characteristics, including pitch-factor and velocity spread. Experimental results are in good agreement with theoretical predictions and demonstrate feasibility of formation of a wide (20 mm) sheet HEB with an energy of 100 keV, a current of 30 A and a pitch-factor of above 1.2 - 1.3.
ISSN:0741-3106
1558-0563
DOI:10.1109/LED.2022.3175437