TY - JOUR
T1 - Influence of reflections of output port on stability of gyrotron traveling wave amplifier
AU - Sun, Haiyan
AU - Jiang, Yanfeng
AU - Li, Yin
AU - Luo, Jirun
PY - 2011/3
Y1 - 2011/3
N2 - Based on the linear theory of gyrotron traveling wave amplifier (gyro-TWA) and the boundary condition, the model of the gyro-TWA with reflections at the output port is established. The influence of the reflections on the wave gain rate, the back wave starting length and the back wave starting current for a Ka band TE01 gyro-TWA at fundamental mode is analyzed. The simulating results show that, for the TE01 mode gyro-TWA, the linear growth rate decreases, the starting length and current of the gyro-backward wave oscillation decrease but the starting frequency varies little with the increase of the tapering angle, and the increased reflection may lower the amplifier's stability to some extent.
AB - Based on the linear theory of gyrotron traveling wave amplifier (gyro-TWA) and the boundary condition, the model of the gyro-TWA with reflections at the output port is established. The influence of the reflections on the wave gain rate, the back wave starting length and the back wave starting current for a Ka band TE01 gyro-TWA at fundamental mode is analyzed. The simulating results show that, for the TE01 mode gyro-TWA, the linear growth rate decreases, the starting length and current of the gyro-backward wave oscillation decrease but the starting frequency varies little with the increase of the tapering angle, and the increased reflection may lower the amplifier's stability to some extent.
KW - Beam-wave interaction
KW - Gyro-TWA
KW - Gyro-backward wave oscillation
KW - Reflection coefficient
KW - Starting conditions
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U2 - 10.3788/HPLPB20112303.0755
DO - 10.3788/HPLPB20112303.0755
M3 - Article
AN - SCOPUS:79954559783
SN - 1001-4322
VL - 23
SP - 755
EP - 760
JO - Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams
JF - Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams
IS - 3
ER -