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Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
Published on: May 3, 2019
The electron cyclotron resonance ion source with arc-shaped coils concept (invited)
H Koivisto1, P Suominen, O Tarvainen
1Department of Physics, University of Jyväskylä, Jyväskylä, Finland. hannu.koivisto@phys.jyu.fi
The Review of Scientific Instruments
|March 3, 2012
Summary
The novel electron cyclotron resonance ion source with arc-shaped coils (ARC-ECRIS) effectively produces highly charged ion beams. This technology offers a promising path for enhancing ion source performance and applications.
Area of Science:
- Plasma Physics
- Ion Source Technology
- Accelerator Physics
Background:
- The performance of electron cyclotron resonance ion sources (ECRIS) is limited by magnet technology for minimum-B field confinement.
- Improving the minimum-B structure is crucial for producing highly charged ion beams.
Purpose of the Study:
- To investigate the feasibility of using arc-shaped coils for a stronger minimum-B structure in ECR ion sources.
- To present the ARC-ECRIS concept and its potential applications.
Main Methods:
- Construction and testing of the first prototype electron cyclotron resonance ion source with arc-shaped coils (ARC-ECRIS) at JYFL.
- Experimental measurements of beam intensity, including Ar(4+) at up to 2 μA.
- Design study for a future ARC-ECRIS operating at higher microwave frequencies (>40 GHz).
Main Results:
- The ARC-ECRIS prototype confirmed its capability for producing highly charged ion beams.
- Achieved Ar(4+) beam intensity of up to 2 μA despite cost-driven compromises.
- Design study indicates feasibility of a higher frequency (>40 GHz) ARC-ECRIS using NbTi-wires.
Conclusions:
- Arc-shaped coils provide a viable method for realizing a strong minimum-B structure in ECR ion sources.
- The ARC-ECRIS concept is a promising advancement for generating highly charged ion beams.
- Future designs hold potential for significantly enhanced performance.
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