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Comparative analysis of continuous-wave surface-plasma negative ion sources with various discharge geometry
Yu Belchenko1, A Sanin1, O Sotnikov1
1Budker Institute of Nuclear Physics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia.
The Review of Scientific Instruments
|March 6, 2014
Summary
This study compares continuous-wave (CW) negative ion extraction from magnetron and semiplanotron discharges. The magnetron source achieved higher beam currents up to 13 mA compared to the semiplanotron source.
Area of Science:
- Plasma Physics
- Ion Source Technology
Background:
- Negative ion sources are crucial for various applications, including neutral beam injection in fusion devices.
- Optimizing continuous-wave (CW) operation is essential for sustained high-intensity beams.
Purpose of the Study:
- To investigate and compare negative ion beam extraction from CW magnetron and semiplanotron discharge configurations.
- To evaluate the performance of these sources against a standard Penning electrode geometry.
Main Methods:
- Experimental study of negative ion extraction.
- Utilizing continuous-wave (CW) magnetron and semiplanotron discharge sources.
- Comparison with a source employing Penning electrode geometry.
Main Results:
- Achieved a CW negative ion beam current of up to 13 mA from a magnetron source (3.5 mm aperture).
- Obtained a CW negative ion beam current of up to 8 mA from a semiplanotron source modification.
- Presented and analyzed the characteristics of both CW magnetron and semiplanotron sources.
Conclusions:
- The CW magnetron source demonstrates superior performance in terms of extracted negative ion current compared to the semiplanotron source.
- The findings provide valuable insights for the development of advanced negative ion beam technologies.
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