T. Idehara, I. Ogawa
Gyrotron FU CW II, equipped with an 8 T liquid helium-free superconducting magnet, represents the second structure in the THz Gyrotron FU CW Series, constructed to enhance the sensitivity of 600 MHz proton-NMR through the application of Dynamic Nuclear Polarization (DNP). It operates primarily in the TE2,6 mode at a designed frequency of 394.6 GHz; however, real-time operational conditions yield a frequency of 394.3 GHz in the TE06 mode due to a fabrication discrepancy in cavity diameter. The gyrotron maintains continuous wave (CW) operation with an output power of at least 30 W in the TE06 cavity mode, with capabilities to exceed 100 W in additional harmonic modes. Additionally, the gyrotron achieved a notable output frequency peak of 443.5 GHz during TE6,5 second harmonic operation. The experimental data align positively with theoretical expectations, confirming the reliability and versatility of gyrotrons as powerful sources in the millimeter to submillimeter wavelength spectrum.
@article{01bb7699-575f-4a67-a82a-bdf183707144,
title={Development of 394 6 GHz CW Gyrotron Gyr},
author={T. Idehara and I. Ogawa},
year={2026},
language={en}
}TY - JOUR TI - Development of 394 6 GHz CW Gyrotron Gyr AU - T. Idehara AU - I. Ogawa PY - 2026 LA - en ER -
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