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Thermal and Structural Analysis and its Effect on Beam-Wave Interaction for 170-GHz, 1-MW Gyrotron Cavity

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Abstract

In this paper thermal and structural analysis for 170 GHz, 1 MW gyrotron interaction cavity and the effect of structural deformation on beam wave interaction is presented. Finite element analysis codes ANSYS has been used for the thermal and structural analysis. Electromagnetic simulator-MAGIC, a Particle-in-Cell (PIC) code, has been used to carry out the effect of the radial expansion of the interaction cavity on beam wave interaction. The change in output power and resonant frequency for operating mode TE34,10 due to thermal expansion is 10 kW and 0.07 GHz, respectively. These values are under the tolerance limit of power and frequency of the gyrotron. The major variation is found in the power growth stability time.

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Acknowledgment

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 Council of Scientific and Industrial Research (CSIR) for awarding the Senior Research Fellowship to Mr. Anil Kumar.

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Correspondence to Anil Kumar.

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Kumar, A., Kumar, N., Singh, U. et al. Thermal and Structural Analysis and its Effect on Beam-Wave Interaction for 170-GHz, 1-MW Gyrotron Cavity. J Fusion Energ 31, 164–169 (2012). https://doi.org/10.1007/s10894-011-9451-y

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  • DOI: https://doi.org/10.1007/s10894-011-9451-y

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