Design of C-band relativistic traveling wave structure amplifier

Yang, 吴洋 Wu; Zhenghong, 李正红 Li; Hua, 黄华 Huang; Chuanxiang, 唐传祥 Tang; Zhou, 许州 Xu

doi:10.3788/hplpb20102203.6625

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Physics Model and Simulation Results1

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2015

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“…Then the beam gives out kinetic energy to the RF field. The biggest difference compared with conventional RKA is that the reentrant pillbox cavity is replaced by a disk-loaded slow wave structure to enhance the modulation depth and reduce the electric field [8,9]. Another difference is that a coaxial disk-loaded cavity is employed in the output cavity to decrease the potential energy and enhance the conversion efficiency [10,11].…”

Section: Physics Model and Simulation Resultsmentioning

confidence: 99%

Design of a C-band relativistic extended interaction klystron with coaxial output cavity

2015

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In order to overcome the disadvantages of conventional high frequency relativistic klystron amplifiers in power capability and RF conversion efficiency, a C-band relativistic extended interaction klystron amplifier with coaxial output cavity is designed with the aid of PIC code MAGIC. In the device, disk-loaded cavities are introduced in the input and intermediate cavity to increase the beam modulation depth, and a coaxial disk-loaded cavity is employed in the output cavity to enhance the RF conversion efficiency. In PIC simulation, when the beam voltage is 680 kV and current is 4 kA, the device can generate 1.11 GW output power at 5.64 GHz with an efficiency of 40.8%.

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