Grating monochromator for electron cyclotron resonance ion source operation.

Area of Science:

• Atomic and Molecular Physics
• Plasma Physics
• Accelerator Physics

Background:

• Electron Cyclotron Resonance (ECR) ion sources are crucial for producing ion beams.
• Tuning and extracting specific ion species, especially those with similar charge-to-mass ratios, presents significant challenges.
• Electromagnetic mass analyzers are complex tools for ion separation.

Purpose of the Study:

• To describe a novel grating monochromator method for tuning the Hyper-ECR ion source.
• To establish a correlation between optical line spectra and ion beam intensity for simplified tuning.
• To offer new insights into simplifying the separation of ion species.

Main Methods:

• Observation of optical line spectra from ECR plasma using a grating monochromator and photomultiplier.
• Measurement of ion beam intensity using a magnetic mass analyzer.
• Correlation analysis between spectral line intensity and ion beam intensity.

Main Results:

• A strong correlation was identified between the light intensity of spectral lines from the ECR plasma and the measured ion beam intensity.
• This correlation provides a direct link for monitoring and tuning ion beam extraction.
• The grating monochromator method offers a simplified approach compared to traditional mass analysis for specific tuning tasks.

Conclusions:

• The grating monochromator method provides an effective and simplified approach for beam tuning of ECR ion sources.
• The observed correlation between optical spectra and ion beam intensity facilitates the extraction of desired ion species.
• This technique offers valuable insights for optimizing ion beam production and separation in accelerator applications.