RF behavior and cavity design for 0.3 THz, 4 kW gyrotron for material processing application |
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| Authors: | Anil Kumar Nitin Kumar Udaybir Singh V Vyas AK Sinha |
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| Institution: | 1. Gyrotron Laboratory, Microwave Tube Area, CSIR-Central Electronics Engineering Research Institute (CEERI), Pilani, Rajasthan 333 031, India;2. Department of Physics, Banasthali University, Banasthali, Rajasthan 304 022, India;1. Princeton Plasma Physics Laboratory, PO Box 45, Princeton, NJ 08543-0451, USA;2. General Atomics, PO Box 85608, San Diego, CA 92186-5608, USA;1. Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod 603950, Russia;2. GYCOM Ltd., Nizhny Novgorod 603950, Russia;3. Peter the Great St. Petersburg Polytechnic University, St. Petersburg 195251, Russia;4. Nizhny Novgorod State University, Nizhny Novgorod 603950, Russia;1. Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan;2. ITER Organization, CS90 046, 13067 St. Paul lees Durance Cedex, France |
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| Abstract: | The design of weakly tapered interaction cavity for 0.3 THz, 4 kW gyrotron operating at the fundamental cyclotron harmonic is presented in this paper. The interaction cavity design and the beam-wave interaction computation are carried out for TE0,6 mode by using the Particle-in-Cell (PIC) electromagnetic simulation approach. The operating mode is selected by using the code GCOMS, in which various mode selection parameters and start oscillation current are calculated. Further, the power and frequency estimation are performed to finalize the cavity and electron beam parameters. The sensitivity analysis is done to finalize the tolerance limit in various parameters. Finally, the thermal and structural analyses are performed for the designed interaction cavity for the effective cooling. |
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