Colin D. Joye, Robert G. Griffin
The operating characteristics of a 140-GHz 14-W long pulse gyrotron are presented. The device is being used in dynamic nuclear polarization enhanced nuclear magnetic resonance (DNP/NMR) spectroscopy experiments. The gyrotron yields 14 W peak power at 139.65 GHz from the TE(0,3) operating mode using a 12.3-kV 25-mA electron beam. Additionally, up to 12 W peak has been observed in the TE(2,3) mode at 136.90 GHz. A series of mode converters transform the TE(0,3) operating mode to the TE(1,1) mode. Experimental results are compared with nonlinear simulations and show reasonable agreement. The millimeter-wave output beam was imaged in a single shot using this work.
@article{2b2d0d86-eac1-45dd-b521-32d8d0fd542f,
title={Operational characteristics of a 14 W 14},
author={Colin D. Joye and Robert G. Griffin},
year={2026},
language={en}
}TY - JOUR TI - Operational characteristics of a 14 W 14 AU - Colin D. Joye AU - Robert G. Griffin PY - 2026 LA - en ER -
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