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Emittance improvement efforts on the 15-20 mA dc H- multicusp source
Xianlu Jia1, Tianjue Zhang, Xia Zheng
1China Institute of Atomic Energy, P.O. Box 275(3), Beijing 102413, People's Republic of China. jiaxl@ciae.ac.cn
Researchers improved the beam quality from a new H(-) multicusp source by modifying its design and optimizing operational parameters. These enhancements aim to reduce beam emittance for better performance in particle accelerator applications.
Area of Science:
- Atomic and Molecular Physics
- Plasma Physics
- Particle Accelerator Technology
Background:
- A direct current (dc) H(-) multicusp source was developed at the China Institute of Atomic Energy.
- The source achieved a beam current of 15 mA, within the 15-20 mA range.
Purpose of the Study:
- To enhance the beam quality by reducing the emittance of the extracted beam.
- To investigate the impact of specific design modifications and operational adjustments on beam emittance.
Main Methods:
- Increasing the physical length of the ion source body.
- Improving the vacuum conditions within the beam extraction area.
- Introducing cesium vapor into the ion source.
Main Results:
- Initial results indicate progress towards emittance improvement.
- The paper details hardware modifications including a lengthened source body, improved back cover, cesium heating system, and extraction vacuum box.
Conclusions:
- The implemented modifications and operational adjustments show promise for reducing beam emittance.
- Further results are expected to quantify the emittance improvement achieved by these methods.
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