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Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
Published on: August 17, 2017
Invited article: development of high-field superconducting Ioffe magnetic traps
L Yang1, C R Brome, J S Butterworth
1Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA.
The Review of Scientific Instruments
|April 2, 2008
Summary
Researchers developed three generations of superconducting Ioffe magnetic traps. The high-current hybrid trap demonstrated superior performance and quench protection capabilities compared to earlier low-current designs.
Area of Science:
- Physics
- Materials Science
- Engineering
Background:
- Superconducting magnetic traps are crucial for various physics experiments.
- Developing robust and high-performance magnetic field configurations is an ongoing challenge.
- Previous designs faced limitations such as excessive training behavior.
Purpose of the Study:
- To design, construct, and evaluate three generations of superconducting Ioffe magnetic traps.
- To compare the performance and characteristics of low-current and high-current trap designs.
- To assess the training behavior and quench protection of the developed magnetic traps.
Main Methods:
- Construction of two low-current traps using racetrack-shaped quadrupole coils and solenoid assemblies with NbTi superconducting wires.
- Development of a third high-current hybrid trap featuring an accelerator-type quadrupole magnet.
- Testing of trap depths at operating currents and 4.2 K, and evaluation of training behavior.
Main Results:
- The first two low-current traps (51 mm and 105 mm bore) achieved trap depths of 1.0 T but exhibited excessive training.
- The third high-current hybrid trap (140 mm bore) reached a tested trap depth of 2.8 T.
- The high-current hybrid trap demonstrated good training behavior and amenability to quench protection.
Conclusions:
- The high-current hybrid superconducting Ioffe magnetic trap offers significant advantages in performance and stability over previous low-current designs.
- The improved training behavior and quench protection make the hybrid trap suitable for demanding applications.
- Further development in superconducting magnet technology can lead to enhanced capabilities for magnetic confinement.
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