Performance optimization of H(-) multicusp ion source for KIRAMS-30 cyclotron

Area of Science:

• Nuclear Physics and Engineering
• Particle Accelerators
• Ion Source Technology

Background:

• The KIRAMS-30 cyclotron is crucial for radioisotope production.
• Efficient injection of negative hydrogen ions is required for optimal cyclotron operation.
• Existing ion sources may not meet the specific beam requirements for KIRAMS-30.

Purpose of the Study:

• To install and optimize a 10 mA H(-) multicusp ion source for the KIRAMS-30 cyclotron.
• To achieve specific beam characteristics: 20-30 keV kinetic energy and < 1 mm mrad normalized emittance.
• To enhance the performance of the ion source through parameter optimization.

Main Methods:

• Installation of a 10 mA H(-) multicusp ion source.
• Systematic variation of ion source operating parameters.
• Measurement and analysis of extracted beam current and emittance.
• Correlation analysis between source parameters and beam characteristics.

Main Results:

• The ion source was successfully installed and operated.
• Optimized operating conditions were determined for the ion source.
• A negative hydrogen ion beam with the desired current and quality was achieved.
• The relationship between ion source parameters and beam performance was established.

Conclusions:

• The optimized multicusp ion source meets the requirements for negative hydrogen ion production and injection into KIRAMS-30.
• The established operating conditions and parameter correlations are vital for future performance enhancements.
• This development contributes to the efficient radioisotope production capabilities of the KIRAMS-30 cyclotron.