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A new high parallel-field spectrometer at TRIUMF's β-NMR facility.
Edward Thoeng1, Ryan M L McFadden2, Suresh Saminathan2
1Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, British Columbia V6T 1Z1, Canada.
The Review of Scientific Instruments
|March 1, 2023
Summary
A new high field spectrometer enhances beta-detected nuclear magnetic resonance (β-NMR) capabilities at TRIUMF. This advancement enables detailed studies of superconducting radio frequency materials in high magnetic fields.
Area of Science:
- Nuclear Physics
- Materials Science
- Spectroscopy
Background:
- The beta-detected nuclear magnetic resonance (β-NMR) facility at TRIUMF has been upgraded.
- Existing capabilities limited the applied magnetic field strength for certain configurations.
Purpose of the Study:
- To introduce a new high field spectrometer for the β-NMR facility.
- To enable depth-resolved studies of electromagnetic fields in materials under higher magnetic fields.
- To investigate superconducting radio frequency (SRF) materials near critical fields.
Main Methods:
- Installation of a new beamline extension enabling β-NMR spectroscopy with fields up to 200 mT parallel to the sample surface.
- Implementation of an ultra-high vacuum (UHV) system, advanced ion optics, and precise beam diagnostics.
- Commissioning using radioactive ions to validate spectrometer performance.
Main Results:
- The new spectrometer successfully extends the capabilities of the β-NMR facility.
- The system allows for higher applied magnetic fields in a specific configuration compared to previous setups.
- Successful commissioning with radioactive ions demonstrates operational readiness.
Conclusions:
- The enhanced β-NMR facility provides a powerful new tool for materials science research.
- This upgrade is particularly beneficial for studying superconducting materials like niobium.
- Future applications in other research areas are anticipated.
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