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Numerical Analysis of Interaction Cavity for 1.5 MW/127.5 GHz Gyrotron

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Abstract

This paper presents the design of 127.5 GHz ITER start-up gyrotron interaction cavity. Particle-in-Cell electromagnetic simulation approach has been used for the cold cavity and beam-wave interaction analysis. In-house developed code GCOMS has been used for the mode selection. TE24,8 mode has been chosen as the operating mode. The simulation results show the output power more than 1.5 MW at the operating frequency of 127.8 GHz and the cavity centre magnetic field of 5.1 T. The study of the parametric dependency of the output power and the efficiency on the electron beam and the cavity geometry parameters has also been carried out.

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Acknowledgments

The authors are pleased to acknowledge the support of Dr. Chandra Shekhar, Director, CEERI Pilani and Dr. SN Joshi, National Co-coordinator of Gyrotron. The authors also wish to thank the team members of gyrotron for helpful discussions. Thanks are also due to CSIR, New Delhi for awarding SRF to Mr. Nitin Kumar.

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Authors and Affiliations

  1. Gyrotron Laboratory, Microwave Tube Area, Central Electronics Engineering Research Institute (CEERI), A Constituent Laboratory of Council of Scientific and Industrial Research, CSIR, Pilani, RJ, 333031, India

    Nitin Kumar, Udaybir Singh, Anil Kumar, Hasina Khatun & A. K. Sinha

  2. Department of Physics, JV College, Baraut, UP, India

    Nitin Kumar & T. P. Singh

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  1. Nitin Kumar
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  2. Udaybir Singh
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  3. Anil Kumar
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  4. Hasina Khatun
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  6. A. K. Sinha
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Correspondence to Nitin Kumar.

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Kumar, N., Singh, U., Kumar, A. et al. Numerical Analysis of Interaction Cavity for 1.5 MW/127.5 GHz Gyrotron. J Fusion Energ 30, 1–6 (2011). https://doi.org/10.1007/s10894-010-9323-x

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  • DOI: https://doi.org/10.1007/s10894-010-9323-x

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