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Three different kinds of 4 min quick startup tests on an S-band klystron are performed in order to find out the beam emission and output power performance of the klystron In the first 4mins, the current of the heater is set to different values, and at the 5th minute the klystron starts up. The results show that the klystron can work steadily, and from the 5th to the 15th minute the beam average current...
A box window used in an S-band high average power klystron is designed by ISFEL3D and HFSS. The cold-test results show that VSWR of the box window is less than 1.1 and the vertical electric field modes are out of the working bandwidth. The hot-test results of the full klystron prove that the box window can endure the average power of more than 22kW and the peek power of more than 1.1MW, and that there...
This paper presents the design considerations, simulation results, and test results for an S-band 22-kW-average-power 7.14%-relative-bandwidth klystron design with 4-min startup, which was developed in the Institute of Electronics, Chinese Academy of Sciences (IECAS) before December 2009. Ten klystrons were built and tested. Over 1.1-MW peak output power with 7.14% relative bandwidth was measured...
A measurement about 4 minutes quick start-up is done on a kind of S-band high average power klystron. The test requires that the filament warms up only 4 minutes, and then the klystron starts up immediately. The results show that the klystron can work steadily, but in the 5th minute the output power is about 93 % of the full power and the beam average current is about 97 % of the full current. Then...
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