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In this paper, the design of input and output cavity for X-band sheet beam klystron was presented. The fabrication and cold test of a barbell cavity were conducted, and the cavity characteristics were predicted by both CST simulation and measurement.
The electron optics system for the W-band sheet beam klystron (WSBK) has been developed in IECAS recently. Using the wiggler focusing structure, with the beam aspect ratio of 25:1, beam voltage of 60 kV, and beam current of 2.6A, the transmission rate of sheet beam electron tube manufactured is more than 55% with the drift length 50mm. However, using the uniform focusing system and the optimum parameters,...
In this paper, by means of a 3D particle-in-cell (PIC) code, the non-linear calculation of beam-wave interaction in periodic cusped magnetic (PCM) field is presented for the X-band sheet beam klystron with five three-cell, extended interaction cavities. The simulation results show that the output peak power is more than 32.4 MW, with the interaction efficiency of more than 31.2%, and the gain of more...
The design of an electron optics system for a W-band sheet beam klystron was described. An elliptically cylindrical electron gun and wiggler focusing structure were adopted to produce and guide a 80-kV 4-A sheet beam with an elliptical cross section of 10 times 0.4 mm. The wiggler focusing principle was reviewed and a practical structure was presented. MAFIA was used to simulate the structure. The...
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