Electron Transportation Experiment and Analysis for a G-Band Magnetron Injection Gun

Jiang, Wei; Dai, Boxin; Lu, Chaoxuan; Wang, Jianxun; Liu, Guo; Pu, Youlei; Wu, Zewei; Luo, Yong

doi:10.1109/ted.2022.3209642

Cited by 7 publications

(2 citation statements)

References 25 publications

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“…At Beijing Vacuum Electronics Research Institute (BVERI), a W-band TE 02 mode gyro-TWT with a triode MIG achieved a peak power of 60 kW, a bandwidth of 8 GHz, and a saturated gain of 32 dB under the 1% duty cycle [16]. At the University of Electronic Science and Technology of China (UESTC), triode and diode MIGs are developed and applied to the gyro-TWTs covering X [17], Ku [18], Ka [19], Q [20], W [21,22], and G bands [23]. A W-band gyro-TWT with a high duty cycle of 40% and a long pulse width of 2 ms, measured a maximum average power of 20.1 kW.…”

Section: Introductionmentioning

confidence: 99%

“…In comparison with existing testing methods, the proposed OEM technique can calculate the beam quality of the gyro-TWT under various operating conditions in real-time. Furthermore, the OEM technique is universally applicable to all dielectric-loaded gyro-TWTs developed by our group and has undergone experimental verification across the X-band to G-band [17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

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Helical Electron Beam Status Online Evaluation for Magnetron Injection Gun

Jiang,

Lu,

Han

et al. 2023

QuBS

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The magnetron injection gun (MIG) is an essential component of the gyrotron traveling wave tube (gyro-TWT). Although the electron beam status influences the performance of the device, it cannot be measured directly in the experiment. An online evaluation module (OEM) for the experiment is developed to calculate the instant beam parameters of MIG. The OEM, by reconstructing the geometry of the MIG and related magnetic field distribution, can obtain the electron beam status under the operating parameters through the online simulation. The beam velocity spread of thermal emission with instant temperature and surface roughness are also considered. The validation is done in a W-band gyro-TWT, and the beam performance is evaluated in the experiment. With a pitch factor of 1.06 electron beam, the velocity spread affected by the electric-magnetic mismatch, thermal emission, and roughness is 1.00%, 0.56%, and 0.43%, respectively. The other beam parameters are also presented in the developed module. The OEM could guide and accelerate the testing process and ensure the safe and stable operation of the device.

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