Experimental tests of a 263 GHz gyrotron for spectroscopic applications and diagnostics of various media

• Published in: Review of scientific instruments Vol. 86; no. 5; p. 054705
• Main Authors: Glyavin, M Yu, Chirkov, A V, Denisov, G G, Fokin, A P, Kholoptsev, V V, Kuftin, A N, Luchinin, A G, Golubyatnikov, G Yu, Malygin, V I, Morozkin, M V, Manuilov, V N, Proyavin, M D, Sedov, A S, Sokolov, E V, Tai, E M, Tsvetkov, A I, Zapevalov, V E
• Format: Journal Article
• Language: English
• Published: United States 01.05.2015
• ISSN: 1089-7623
• DOI: 10.1063/1.4921322

A 263 GHz continuous-wave (CW) gyrotron was developed at the IAP RAS for future applications as a microwave power source in Dynamic Nuclear Polarization / Nuclear magnetic resonance (DNP/NMR) spectrometers. A new experimental facility with a computerized control was built to test this and subsequent gyrotrons. We obtained the maximum CW power up to 1 kW in the 15 kV/0.4 A operation regime. The power about 10 W, which is sufficient for many spectroscopic applications, was realized in the low current 14 kV/0.02 A regime. The possibility of frequency tuning by variation of the coolant temperature about 4 MHz/1 °C was demonstrated. The spectral width of the gyrotron radiation was about 10(-6).