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Thermal-structural analysis of electron gun with control grid.
Lieming Yao1, Kai Zhang, Hailong Yu
1School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China.
The Review of Scientific Instruments
|March 3, 2012
Summary
This study analyzes electron gun thermal-structural performance. Results show thermal stress impacts gun characteristics, aiding future design modifications for improved reliability.
Area of Science:
- Physics
- Materials Science
- Engineering
Background:
- Electron guns require high reliability for consistent beam performance.
- Understanding thermal-structural behavior is crucial for electron gun design.
- Component temperatures and displacements affect overall gun functionality.
Purpose of the Study:
- To compute steady-state temperatures and displacements for electron gun components.
- To analyze the impact of varying cathode temperatures and control grid intercepted power.
- To evaluate the influence of thermal stress on electron gun characteristics.
Main Methods:
- Performed steady-state thermal analysis on an electron gun model.
- Conducted structural analysis to assess electrode deformation under thermal load.
- Verified computational results through experimental measurements on an assembled electron gun.
Main Results:
- Determined control grid temperature under various operating conditions.
- Quantified thermal deformation of inner electrodes at high temperatures.
- Observed a slight alteration in electron gun characteristics due to thermal stress.
Conclusions:
- Steady-state thermal-structural analysis provides essential data for electron gun reliability.
- Experimental validation confirms the accuracy of the computational models.
- Thermal deformation data can guide design improvements for electron guns.
