Progress of resonant ionization laser ion source development at GANIL

Area of Science:

• Nuclear Physics
• Accelerator Science
• Atomic Physics

Background:

• SPIRAL2 (Système de Production d'Ions Radioactifs Accélérés en Ligne) is a next-generation facility for producing radioactive ion beams.
• Resonant ionization laser ion sources are crucial for producing high-purity radioactive ion beams.
• GANIL (Grand Accélérateur National d'Ions Lourds) is a leading heavy-ion research facility.

Purpose of the Study:

• To develop and test a fully operational laser ion source for SPIRAL2 Phase 2.
• To identify optimal technical solutions for high selectivity and ionization efficiency.
• To achieve small ion beam emittance and stable long-term operation for radioactive ion beam production.

Main Methods:

• Utilizing the GISELE (GANIL Ion Source using Electron Laser Excitation) test bench.
• Investigating resonant ionization laser ion source techniques.
• Studying isotope separation on-line (ISOL) and low-energy in-flight methods.
• Evaluating new ion source geometries.

Main Results:

• Presentation of the latest experimental results from the GISELE test bench.
• Data on the performance of the new ion source geometry.
• Analysis of selectivity, ionization efficiency, and beam emittance.

Conclusions:

• The GISELE project is advancing the development of advanced laser ion sources for SPIRAL2.
• Optimized ion source geometry is key to achieving desired beam characteristics.
• Successful implementation will enhance radioactive ion beam production capabilities at GANIL.