Influence of Misalignment on the Behavior of Electron Beam of an 800 GHz Gyrotron

Xiao, Houxiu; Deng, Zhaolun; Chen, Xianfei; Wang, Pengbo; He, Zhaochang; Zhu, Gang; Liu, Luwei; Ding, Tonghai; Han, Xiaotao

doi:10.1109/led.2021.3116621

Cited by 11 publications

(1 citation statement)

References 25 publications

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“…At Huazhong University of Science and Technology (HUST), an 800 GHz gyrotron prototype with a sapphire window was developed to examine the correlation between misalignment and beam trajectory. The blue-violet spot resulting from the beam bombardment on the sapphire serves allows measurement of the beam's tilt angle and displacement distance [30]. To the authors' knowledge, there are presently no reports on real-time online evaluation systems for beam status due to the complex operating environment of the gyro-devices, characterized by high vacuum, high voltage, and high magnetic fields.…”

Section: Introductionmentioning

confidence: 99%

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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Section: Introductionmentioning

confidence: 99%