Thermal analysis of electron gun cathode for gyrotron travelling wave tube

Niu Jingyang; Wang Li; Luo Yong; Jiang Wei

doi:10.3788/HPLPB20132502.0446

Volume 25 Issue 02

Dec. 2012

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(02): 446-450

Chen Ying. Three-dimensional numerical simulation on 15~20 mA H- cusp source[J]. High Power Laser and Particle Beams, 2014, 26: 014001. doi: 10.3788/HPLPB201426.014001

Citation:

Niu Jingyang, Wang Li, Luo Yong, et al. Thermal analysis of electron gun cathode for gyrotron travelling wave tube[J]. High Power Laser and Particle Beams, 2013, 25: 446-450. doi: 10.3788/HPLPB20132502.0446

Chen Ying. Three-dimensional numerical simulation on 15~20 mA H- cusp source[J]. High Power Laser and Particle Beams, 2014, 26: 014001. doi: 10.3788/HPLPB201426.014001

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Thermal analysis of electron gun cathode for gyrotron travelling wave tube

doi: 10.3788/HPLPB20132502.0446

1.
School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China

Received Date: 2012-05-17
Rev Recd Date: 2012-08-13
Publish Date: 2013-02-10

Abstract

Abstract

The paper presents the thermal and deformation analysis of electron gun cathode for Gyro-TWT using the finite element analysis software ANSYS, which obtains the temperature distribution and thermal deformation of the cathode model. In order to maintain the uniformity of surface temperature of the cathode emitter, the contact area of the thermal conductive medium with the emitter bottom is extended and the amount of the heater coil near the top of the emitter is reduced, the temperature difference decreases from 18 ℃ to 0.9 ℃. On the basis of the thermal analysis, thermal deformation analysis is demonstrated and the velocity ratio, longitudinal and transverse velocity spread, guide center radius all increase in EGUN code simulation.
- electron gun,
- cathode,
- thermal analysis,
- ANSYS,
- thermal deformation

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