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Long Pulse Operation of the THz Gyrotron with a Pulse Magnet

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Abstract

Long pulse operation up to 1 msec of a high frequency gyrotron with a pulse magnet has been successfully carried out in a frequency range including 1 THz. In the experiments, the timing of an electron beam pulse injection is adjusted at the top of the magnetic field pulse, where the variation of field intensity is negligible. The operation cavity modes seem to be TE1, 12 and TE4,12 at the second harmonics. The corresponding frequencies are 903 GHz and 1,013 GHz, respectively. Additionally several features of radiation measurement results of the gyrotron are described and brief considerations are presented.

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Acknowledgement

This work is supported partially by the special fund for education and research from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) in Japan.

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Authors and Affiliations

  1. Research Center for Development of Far Infrared Region, University of Fukui (FIR FU), Bunkyo 3-9-1, Fukui-shi, 910-8507, Japan

    T. Idehara, T. Saito, H. Mori, H. Tsuchiya, La Agusu & S. Mitsudo

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  1. T. Idehara
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  2. T. Saito
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  3. H. Mori
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  4. H. Tsuchiya
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  5. La Agusu
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  6. S. Mitsudo
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Correspondence to H. Mori.

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Idehara, T., Saito, T., Mori, H. et al. Long Pulse Operation of the THz Gyrotron with a Pulse Magnet. Int J Infrared Milli Waves 29, 131–141 (2008). https://doi.org/10.1007/s10762-007-9312-y

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  • DOI: https://doi.org/10.1007/s10762-007-9312-y

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