Cyclotron autoresonance maser with high Doppler frequency up-conversion

Bratman, V. L.; Денисов, Г. Г.; Ofitserov, M. M.; Самсонов, С. В.; Arkhipov, O. V.; Kazacha, V. I.; Krasnykh, A.; Perelstein, E. A.; Zamrij, A. V.

doi:10.1007/bf01011327

Cited by 12 publications

(2 citation statements)

References 6 publications

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“…Notable early experiments on the CARM include work in Russia (then the USSR) [5,6]. These experimental studies have continued in recent years [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…Unlike gyrotrons and free-electron lasers, there have been only a few experimental groups investigating the CARM [6,5,9,7,1]. Work in the Soviet Union [6,5] The new generation of TeV e*e -linear colliders of reasonable length and cost will require [13,14,15] at least an order-of-magnitude increase in the accelerating gradient above the ,,, 10-20 MeV/m that can be presently achieved using conventional S-band klystron drivers.…”

Section: Introductionmentioning

confidence: 99%

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High frequency CARM driver for rf linacs. Final report, September 15, 1989--March 15, 1993

Danly¹

1993

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This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or _ervice by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views MASTE and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

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“…Notable early experiments on the CARM include work in Russia (then the USSR) [5,6]. These experimental studies have continued in recent years [7,8].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High frequency CARM driver for rf linacs. Final report, September 15, 1989--March 15, 1993

Danly¹

1993

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State-of-the-Art of High-Power Gyro-Devices and Free Electron Masers

Thumm

2020

J Infrared Milli Terahz Waves

290

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STATE-OF-THE-ART OF HIGH POWER GYRO-DEVICES AND FREE ELECTRON MASERSAt present, gyrotron oscillators are mainly used as high power millimeter wave sources for electron cyclotron resonance heating (ECRH) and diagnostics of magnetically confmed plasmas for generation of energy by controlled thermonuclear fusion. 140 GHz gyrotrons with output power Pout = 0.58 MW, pulse length 't = 2.0 s and efficiency 11 = 34 % are commercially available. Diagnostic gyrotrons deliver P out = 40 kW with 't = 40 J-lS at frequencies up to 650 GHz (11 2_ 4 %). Recently, gyrotron oscillators have also been successfully used in matedal processing and plasma chemistry. Such technological applications require gyrotrons with the following parameters: f 2. 28 GHz , Pout = 10-30 kW, CW, 11 2. 30 %. This paper reports on achievements and problems related to the development of very high power mm-wave gyrotrons for long pulse or CW operation and describes the microwave technological pecularities of the different development steps. In addition, this work gives a short overview of the present development of gyrotrons for technological applications, quasi-optical gyrotrons, cyclotron autoresonance masers (CARMs), gyro-ldystrons, gyro-TWT amplifiers, gyro-BWO's and free electron masers (FEMs). The most impressive FEM output parameters are: Pout = 2GW, 't = 20 ns, 11 = 13 % at 140 GHz (LLNL) and Pout = 15 kW, 't = 20 J-tS, 11 = 5 % in the range from 120 to 900 GHz (UCSB). ENTWICKLUNGSSTAND VON HOCHLEISTUNGS-GYRO-RÖHREN UND FREI-ELEKTRONEN-MASERN Übersiebt Gyrotronoszillatoren werden derzeit vorwiegend als Hochleistungsmillimeterwellenquellen für die Elektron-Zyklotron-Resonanzheizung (ECRH) und Diagnostik von magnetisch eingeschlossenen Plasmen zur Erforschung der Energiegewinnung durch kontrollierte Kernfusion eingesetzt. 140 GHz Gyrotrons mit einer Ausgangsleistung von Pout = 0.58 MW bei Pulslängen von 't = 2.0 s und Wirkungsgraden von • 11 = 34% sind kommerziell erhältlich. Gyrotrons zur Plasmadiagnostik erreichen Frequenzen bis zu 650 GHz bei P out = 40 kW und 't = 40 ~-ts (11 2. 4 %). In jüngster Zeit jedoch finden Gyrotronoszillatoren auch für technologische Prozesse und in der Plasmachemie erfolgreich Verwendung. Dabei werden Röhren mit folgenden Parametern eingesetzt: f 2_ 28 GHz, Pout = 10-30 kW, CW, 11 2. 30 %. In diesem Beitrag wird auf den aktuellen Stand und die Probleme bei der Entwicklung von Hochleistungs-mm-Wellen-Gyrotrons für Langpuls-und Dauerstrichbetrieb sowie auf die mikrowellentechnischen Besonderheiten der einzelnen Entwicklungsphasen eingegangen: Außerdem wird auch kurz über den neuesten Stand der Entwicklung von Gyrotrons für technologische Anwendungen, quasi-optischen Gyrotrons, Zyklotron-Autoresonanz-Masern (CARMs), Gyroklystrons, Gyro-TWT-Verstärkern, Gyro-Rückwärtswellenoszillatoren (BWOs) und Frei-Elektronen-Maser (FEM) berichtet. FEM-Rekordausgangsparameter sind hier: Pout = 2 GW, 't = 20 ns, 11 = 13 % bei 140 GHz (LLNL) und Pout = 15 kW, 't = 20 J-lS, 11 = 5 % im Bereich von 120 bis 900 GHz (UCSB). Contents

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Millimeter-Wave Relativistic Electron Devices

Bratman

2003

Radiophysics and Quantum Electronics

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Cyclotron autoresonance maser with high Doppler frequency up-conversion

Cited by 12 publications

References 6 publications

High frequency CARM driver for rf linacs. Final report, September 15, 1989--March 15, 1993

High frequency CARM driver for rf linacs. Final report, September 15, 1989--March 15, 1993

State-of-the-Art of High-Power Gyro-Devices and Free Electron Masers

Millimeter-Wave Relativistic Electron Devices

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