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Finite element analyses of a linear-accelerator electron gun
1Centre for High Energy Physics, University of the Punjab, Lahore 45590, Pakistan.
The Review of Scientific Instruments
|March 6, 2014
Summary
Thermal and structural analyses of the Beijing Electron-Positron Collider (BEPCII) electron gun confirm its design parameters. The electron gun operates reliably at 1000°C without thermal failures.
Area of Science:
- Particle accelerator technology
- Applied physics
- Materials science
Background:
- The Beijing Electron-Positron Collider (BEPCII) requires reliable electron gun operation for its linear accelerator.
- High operating temperatures can pose challenges to the thermo-structural integrity and performance of electron guns.
Purpose of the Study:
- To perform thermo-structural analyses of the BEPCII electron gun operating at a cathode temperature of 1000°C.
- To validate the design parameters and operational reliability of the electron gun under thermal load.
Main Methods:
- Finite element analysis (FEA) using ANSYS workbench for thermo-structural modeling.
- Electron beam trajectory simulations using the SLAC electron beam trajectory program EGUN.
- Comparison of simulation results with experimental data from the electron gun assembly.
Main Results:
- Simulation and experimental results showed good agreement, validating the beam parameters.
- The thermo-structural design was confirmed to be adequate for the specified operating temperature of 1000°C.
- No thermal-induced failures have occurred during continuous operation since commissioning.
Conclusions:
- The thermo-structural design of the BEPCII electron gun is robust and reliable at 1000°C.
- The validated design ensures stable beam parameters and continuous operation for the BEPCII linear accelerator.
- The study confirms the suitability of the electron gun for long-term, high-temperature operation.
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