|Author||Liu, Zhenbang ♦ Huang, Hua ♦ Lei, Lurong ♦ Jin, Xiao ♦ Zhu, Lei ♦ Wang, Ganping ♦ He, Hu ♦ Wu, Yao ♦ Ge, Yi ♦ Yuan, Huan ♦ Chen, Zhaofu|
|Source||United States Department of Energy Office of Scientific and Technical Information|
|Subject Keyword||PLASMA PHYSICS AND FUSION TECHNOLOGY ♦ AMPLIFIERS ♦ COMPUTERIZED SIMULATION ♦ EFFICIENCY ♦ ELECTRON DRIFT ♦ GAIN ♦ GHZ RANGE ♦ KLYSTRONS ♦ PULSES ♦ RELATIVISTIC RANGE|
|Abstract||To achieve a gigawatt-level long pulse radiation power in X-band, a multi-beam relativistic klystron amplifier is proposed and studied experimentally. By introducing 18 electron drift tubes and extended interaction cavities, the power capacity of the device is increased. A radiation power of 1.23 GW with efficiency of 41% and amplifier gain of 46 dB is obtained in the particle-in-cell simulation. Under conditions of a 10 Hz repeat frequency and an input RF power of 30 kW, a radiation power of 0.9 GW, frequency of 9.405 GHz, pulse duration of 105 ns, and efficiency of 30% is generated in the experiment, and the amplifier gain is about 45 dB. Both the simulation and the experiment prove that the multi-beam relativistic klystron amplifier can generate a long pulse GW-level radiation power in X-band.|
|Learning Resource Type||Article|
|Publisher Place||United States|
|Journal||Physics of Plasmas|
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