A method for measuring electron energy distribution curve at collector inlet of traveling wave tube
A technology of electron energy and distribution curve, which is applied in the direction of vacuum tube testing, etc., can solve the problems of long design cycle for collector efficiency improvement, high design cost, and constraints on traveling wave tubes, so as to reduce the number of iterative development times and design cycle, and reduce development costs , the effect of convenient operation
Active Publication Date: 2022-01-25
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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[0006] In view of the above-mentioned problems or deficiencies, in order to solve the defects that there is a large difference between the design of the high-efficiency collector of the existing traveling wave tube and the actual manufacturing, which seriously restricts the improvement of the efficiency of the collector of the traveling wave tube, the long design cycle and the large design cost, this paper The invention proposes a method for measuring the electron energy distribution curve at the collector inlet of a traveling wave tube. By using this method, the electron energy distribution curve at the collector inlet can be measured. The measured energy distribution curve at the collector inlet is more accurate than the simulated data. Therefore, it can effectively guide the design of high-efficiency collectors
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[0032] The present invention will be further described in detail below in conjunction with a space traveling wave tube four-stage step-down collector.
[0033] Step 1 Description:
[0034] Connect the traveling wave tube power supply, the input signal input device and the output signal receiving device, set the working ratio of the traveling wave tube electron injection modulation power supply to 1%-5%, and set the traveling wave tube spiral flow safety threshold I h , given the recovery current indication value I of the stop voltage step-down sweep R .
[0035] For the measurement data of the traveling wave tube, the first step is to add power to the traveling wave tube and input signal input device and output signal receiving device. Make sure the TWT is working properly. In order to ensure safety, the TWT electronic injection modulation power supply is tested from a low duty ratio, and the duty ratio range of 1%-5% is selected here; the initial duty ratio is set to 5% in...
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The invention belongs to the high-efficiency technical field of traveling wave tubes, and in particular relates to a method for measuring electron energy distribution curves at the inlet of a traveling wave tube collector. The present invention starts to test the traveling wave tube by using low working ratio electron injection and emission, and gradually increases the working ratio of the traveling wave tube under the premise of ensuring safety, until the working ratio of the traveling wave tube can no longer be increased. At this time, the measured data is final measurement data. The final measurement data is used to guide the iterative optimization design of high-efficiency collectors and the debugging of high-efficiency collectors, which reduces the iterative development times and design cycle of high-efficiency traveling wave tubes, and helps reduce the cost of high-efficiency traveling wave tubes. Development costs. And the present invention is convenient and simple to operate, does not need to manufacture complicated test system, greatly saves time and experiment cost.
Description
technical field [0001] The invention belongs to the high-efficiency technical field of traveling wave tubes, and in particular relates to a method for measuring electron energy distribution curves at the inlet of a traveling wave tube collector. Background technique [0002] Traveling wave tubes are broadband and high-power vacuum electronic devices with high efficiency, large bandwidth, high reliability, long life and radiation resistance, and are widely used in radar, satellite communication, navigation and other fields. High efficiency is one of the development goals of traveling wave tubes. High efficiency means that the energy conversion efficiency of traveling wave tubes is high. Under the limited energy supply of traveling wave tubes, it helps to save system energy; it also means that in the same With a high energy supply, the satellite payload can be increased; high efficiency also means low energy loss, and the heat energy converted from the electrical energy lost b...
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IPC IPC(8): G01R31/25
CPCG01R31/25
Inventor 王小兵胡权邓文凯朱世龙高鸾凤胡玉禄朱小芳李斌杨中海
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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