Characterization of a new electrostatic storage ring for photofragmentation experiments

Area of Science:

• Atomic and Molecular Physics
• Accelerator Physics
• Chemical Physics

Background:

• Advanced experimental facilities are crucial for studying fundamental ion-atom and ion-molecule interactions.
• Electrostatic storage rings offer unique capabilities for precise control and analysis of ion beams.

Purpose of the Study:

• To introduce the newly constructed Storage Ring in Aarhus for PHoton-Ion Reaction Analysis (SAPHIRA).
• To present the results of the first commissioning experiments with SAPHIRA.
• To characterize the performance of the storage ring for ion beam storage and analysis.

Main Methods:

• Commissioning experiments using an intense beam of Cu(-) ions at 4 keV.
• Characterization of stored ion beam decay rate.
• Measurement of longitudinal bunch spreading.
• Direct measurement of transverse spatial distributions under various storage conditions.
• Systematic investigation of ion storage stability within SAPHIRA's electrical configuration space.

Main Results:

• Demonstration of stable ion beam storage in SAPHIRA.
• Quantification of ion beam decay rates and longitudinal spreading.
• Detailed analysis of transverse spatial beam profiles.
• Identification of optimal electrical configurations for ion storage.

Conclusions:

• SAPHIRA is a successfully commissioned electrostatic storage ring capable of precise ion beam manipulation.
• The initial experiments validate the design and performance of SAPHIRA for future photon-ion reaction studies.
• The systematic investigation provides valuable data for optimizing storage ring operation and understanding ion beam dynamics.