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The injection efficiency measurement and analysis for central region model cyclotron
Hongjuan Yao1, Zhenguo Li, Tao Ge
1China Institute of Atomic Energy, Beijing 102413, People's Republic of China. yaohongjuan@gmail.com
The Review of Scientific Instruments
|March 3, 2010
Summary
Initial beam tests of a central region model cyclotron at the China Institute of Atomic Energy show improved performance after multicusp field repair. The enhanced ion source achieved 93% transmission efficiency for low-current beams.
Area of Science:
- Nuclear Physics
- Accelerator Physics
Background:
- A central region model cyclotron was constructed at the China Institute of Atomic Energy for experimental verification of beam properties.
- Previous studies detailed the ion source and injection line designs.
Purpose of the Study:
- To report the initial beam test results of the central region model cyclotron.
- To detail improvements made to the ion source based on beam test data.
Main Methods:
- Utilized a wire scanner in the injection line to measure beam transverse sizes.
- Collected data to fit phase plane parameters post-ion source.
- Described the experimental arrangement and results.
Main Results:
- The ion source, originally built in 2003, was recently improved, primarily through multicusp field repair.
- A transmission efficiency of 93% was achieved from the ion source to the inflector exit.
- These results were obtained for a continuous, low-current input beam.
Conclusions:
- The initial beam tests validated the cyclotron's performance.
- Improvements to the multicusp field significantly enhanced the ion source's efficiency.
- The study provides valuable data for further cyclotron development and experimental applications.
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