A 30 T pulsed magnet with conical bore for synchrotron powder diffraction

Area of Science:

• Condensed Matter Physics
• Materials Science
• Crystallography

Background:

• High magnetic fields are crucial for studying material properties.
• Synchrotron X-ray powder diffraction requires specialized equipment for in-situ measurements.

Purpose of the Study:

• To design, construct, and operate a novel 30 tesla (T) horizontal field magnet system.
• To optimize the system for synchrotron X-ray powder diffraction experiments.
• To enable accurate crystal structure analysis under extreme conditions.

Main Methods:

• Development of a horizontal field magnet with a conical bore.
• Integration with a 290 kJ generator for pulsed magnetic fields (60 ms duration).
• Utilized a liquid nitrogen bath and liquid helium flow cryostat for temperature control (5-250 K).
• Incorporated ±31° optical access for downstream Debye ring measurement.

Main Results:

• Successful generation of 30 T magnetic field pulses with a 60 ms duration and 4.1 ms rise time.
• Achieved a repetition rate of 6 pulses per hour at 30 T.
• Demonstrated capability for accurate crystal structure analysis through sufficient Debye ring measurement.
• Operated the system on European Synchrotron Radiation Facility (ESRF) beamlines ID20 and ID06.

Conclusions:

• The developed 30 T magnet system is a powerful tool for synchrotron X-ray powder diffraction.
• The system facilitates advanced materials research by enabling in-situ structural analysis under high magnetic fields and variable temperatures.
• This technology opens new avenues for exploring exotic material phases and properties.