CW Operation of a W-band High-Gain Helical-Waveguide Gyrotron Traveling-Wave Tube

Experimental details are discussed and millimeter wave measurements presented of a W-band gyrotron traveling-wave tube (gyro-TWT) that uses a helically corrugated interac-tion waveguide operating at the second electron cyclotron har-monic. A method for increasing the gain by using an interaction cir...

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Veröffentlicht in:	IEEE electron device letters 2020-05, Vol.41 (5), p.1-1
Hauptverfasser:	Samsonov, Sergey V., Denisov, Gregory G., Gachev, Igor G., Bogdashov, Alexander A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Circuits Continuous radiation continuous-wave (CW) operation Current measurement Cyclotrons Electron tubes Electrons Frequency measurement Gyrotron traveling-wave tube (gyro-TWT) helically corrugated waveguide Millimeter waves Power generation Power measurement second cyclotron harmonic operation single-stage depressed collector Transmission line measurements Traveling wave tubes Voltage measurement W-band
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Beschreibung
Zusammenfassung:	Experimental details are discussed and millimeter wave measurements presented of a W-band gyrotron traveling-wave tube (gyro-TWT) that uses a helically corrugated interac-tion waveguide operating at the second electron cyclotron har-monic. A method for increasing the gain by using an interaction circuit with two sections separated by a long sub-cutoff drift sec-tion has been experimentally verified. A 10-mW driving source was sufficient to enable an amplified signal output power of 3 kWs. The continuous-wave (CW) operation with a single-stage depressed collector and deposited beam power of about 20 kW is believed to be the first demonstration of its kind for a W-band gyro-TWT.
ISSN:	0741-3106 1558-0563
DOI:	10.1109/LED.2020.2980572