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Study on the steady operating state of a micro-pulse electron gun
Zhou Kui1, Lu Xiangyang1, Quan Shengwen1
1State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China.
The Review of Scientific Instruments
|October 3, 2014
Summary
This study investigates the stable operation of micro-pulse electron guns (MPGs) for producing high-current electron beams. Researchers identified requirements for stable MPG operation and achieved a stable output beam current of 3.8 mA.
Area of Science:
- Physics
- Electrical Engineering
Background:
- Micro-pulse electron guns (MPGs) utilize multipacting in RF cavities for high-current, short-pulse electron beams.
- MPG technology has been conceptualized for over 20 years but hindered by unstable operation.
Purpose of the Study:
- To investigate and achieve a steady operating state for micro-pulse electron guns.
- To define the conditions necessary for stable MPG performance through theoretical and experimental analysis.
Main Methods:
- Theoretical analysis of RF cavity and beam load interactions.
- Design, construction, and testing of a 2856 MHz MPG cavity.
- Experimental observation of both unstable and stable MPG operating states.
Main Results:
- Requirements for steady-state MPG operation were proposed.
- A functional MPG cavity was successfully designed, built, and tested.
- Stable operation was achieved, with a detected output beam current of approximately 3.8 mA.
Conclusions:
- The study demonstrates the feasibility of achieving stable operation in MPGs.
- The findings pave the way for practical applications of MPG technology.
- Further experimental validation and optimization are ongoing.
