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

M Yu Glyavin; A V Chirkov; G G Denisov; A P Fokin; V V Kholoptsev; A N Kuftin; A G Luchinin; G Yu Golubyatnikov; V I Malygin; M V Morozkin; V N Manuilov; M D Proyavin; A S Sedov; E V Sokolov; E M Tai; A I Tsvetkov; V E Zapevalov

doi:10.1063/1.4921322

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

Rev Sci Instrum. 2015 May;86(5):054705. doi: 10.1063/1.4921322.

Authors

M Yu Glyavin¹, A V Chirkov¹, G G Denisov¹, A P Fokin¹, V V Kholoptsev¹, A N Kuftin¹, A G Luchinin¹, G Yu Golubyatnikov¹, V I Malygin¹, M V Morozkin¹, V N Manuilov¹, M D Proyavin¹, A S Sedov¹, E V Sokolov², E M Tai², A I Tsvetkov¹, V E Zapevalov¹

Affiliations

¹ Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia.
² Gycom Ltd., Nizhny Novgorod, Russia.

PMID: 26026544
DOI: 10.1063/1.4921322

Abstract

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).