Compensating for gyroradius effects in beamlines with small Helmholtz coils

Area of Science:

• Experimental Physics
• Particle Physics
• Applied Electromagnetism

Background:

• Earth's magnetic field interferes with precise measurements of low-energy charged particles in laboratory beamlines.
• Existing methods to counteract this interference often require large-scale magnetic field nullification, which is facility-wide and impractical.
• Accurate tracking of charged particles is crucial for various physics experiments and applications.

Purpose of the Study:

• To develop and present a novel, localized method for correcting charged particle trajectories affected by Earth's magnetic field.
• To offer a versatile and easily implementable solution for enhancing measurements in existing and new laboratory beamlines.
• To enable reliable detection and analysis of lighter, low-energy charged particles.

Main Methods:

• Utilized spatially limited Helmholtz coils to generate a targeted magnetic field.
• Implemented a trajectory correction algorithm based on the localized field.
• Integrated the system into a standard laboratory beamline setup.

Main Results:

• Demonstrated effective correction of charged particle trajectories influenced by the ambient magnetic field.
• Showcased the system's capability to improve measurement accuracy for low-energy particles.
• Verified the versatility and ease of integration of the Helmholtz coil approach.

Conclusions:

• The localized Helmholtz coil method provides an efficient and practical solution for mitigating Earth's magnetic field effects.
• This technique significantly enhances the feasibility of conducting precise measurements of low-energy charged particles in laboratory settings.
• The approach is adaptable to various experimental facilities, offering broad applicability.