Cold tests and high power measurements on an advanced quasi-optical mode converter for a 118 GHz gyrotron

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:391205

Braz, O; Losert, M; Moebius, A; Thumm, M ^[1]

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1. Institut fuer Technische Physik, Karlsruhe (Germany)

This paper reports on cold test and high power measurements of the improved, dimple type quasi-optical mode converter for the 118 GHz, 0.5 MW, 210 s TE{sub 22,6} gyrotron oscillator collaboratively developed by CEA Cadarache, CRPP Lausanne, FZK Karlsruhe and Thomson Tubes Electroniques Velizy. For the low power measurements the required rotating TE{sub 22,6} mode was generated in a coaxial cavity using quasioptical techniques. The high power measurements were performed on the gyrotron output beam using an infrared camera. The evaluated mode purity of the linearly polarized fundamental Gaussian output mode is (96 {plus_minus} 1)% in agreement with calculations.

• OSTI ID: 391205
• Report Number(s): CONF-951240--
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
GHZ RANGE 100-1000
MICROWAVE AMPLIFIERS
MODE CONVERSION
PERFORMANCE TESTING
POWER RANGE 100-1000 KW