Development Program for a 200-kW, c-w gyrotron. Quarterly report No. 14, October-December 1982

Technical Report · Sat Jan 01 04:00:00 EST 1983

DOI:https://doi.org/10.2172/5904218· OSTI ID:5904218

Schmitt, M. J.; Ferguson, P. E.; DeHope, W. J.; Matranga, V. A.; Sandoval, J. J.; Tancredi, J. J.

The objective of this program is the design and development of a millimeter-wave device to produce 200 kW of continuous-wave power at 60 GHz. The device, a gyrotron oscillator, will be compatible with power delivery to an electron-cyclotron plasma. Smooth control of RF power output over a 17 dB range is required, and the device should be capable of operation into a severe time-varying load mismatch. Continued testing of S/N 1 A was limited by boiling in the water load. An efficiency of 48.9 percent was achieved at 3.3 amps cathode current. Extensive experimentation with eclectic water-load configurations was performed and significant progress was made toward a permanent load configuration. Testing was completed on S/N 2. This gyrotron had a limited operating range due to a nonconcentric cathode. After regunning, initial tests on S/N 2A produced 150 kW RF on the diagnostic modulator. Further investigation of a beam instability problem, which occurs under certain magnetic-field conditions, was performed on S/N 2A. Corrective action has been taken on S/N 3 to suppress this oscillation.

• Research Organization: Hughes Aircraft Co., Torrance, CA (USA). Electron Dynamics Div.
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5904218
• Report Number(s): ORNL/Sub-79-33200/14; ON: DE83014174
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700205* -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
AMPLIFIERS
BEAMS
CATHODES
ECR HEATING
ELECTRODES
ELECTRON BEAMS
ELECTRONIC EQUIPMENT
EQUIPMENT
HEATING
HIGH-FREQUENCY HEATING
LEPTON BEAMS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
OSCILLATIONS
PARTICLE BEAMS
PERFORMANCE TESTING
PLASMA HEATING
RESEARCH PROGRAMS
STABILITY
TESTING