A 3 T superconducting magnet for long-run magnetic Compton-scattering experiments.

Area of Science:

• Condensed Matter Physics
• Materials Science
• Experimental Physics

Background:

• Magnetic Compton-profile (MCP) measurements require stable and controllable magnetic fields.
• Traditional superconducting magnets often necessitate frequent liquid helium refills, limiting experimental duration and increasing operational complexity.
• The need for enhanced capabilities in MCP experiments drives the development of advanced magnet systems.

Purpose of the Study:

• To design and construct a 3 Tesla superconducting magnet system for MCP measurements.
• To incorporate rapid magnetic field direction alteration capabilities.
• To achieve extended operational periods without the need for liquid helium replenishment.

Main Methods:

• A 3 Tesla superconducting magnet was designed and constructed.
• Two refrigerators were integrated into the cryostat for thermal management and helium recondensation.
• The system's capability for rapid magnetic field switching (within 5 seconds) was implemented.
• Long-term operational stability without liquid helium refill was tested.

Main Results:

• The designed superconducting magnet system achieved a field strength of 3 Tesla.
• The system demonstrated rapid magnetic field direction alteration within 5 seconds.
• The magnet operated continuously for over one week without requiring liquid helium refills.
• The integrated refrigerators successfully maintained low temperatures and recondensed liquid helium.

Conclusions:

• The developed 3 Tesla superconducting magnet system offers significant improvements for magnetic Compton-profile measurements.
• The system's ability to change magnetic field direction quickly and operate for extended periods enhances experimental efficiency.
• This technology reduces operational overhead and increases the accessibility of advanced materials characterization techniques.