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Compensating for gyroradius effects in beamlines with small Helmholtz coils
L Y Khoo1, D J McComas1, J S Rankin1
1Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08540, USA.
Abstract:
Measurements of lighter, low-energy charged particles in a laboratory beamline are complicated due to the influence of Earth's magnetic field. Rather than nulling out the Earth's magnetic field over the entire facility, we present a new way to correct particle trajectories using much more spatially limited Helmholtz coils. This approach is versatile and easy to incorporate in a wide range of facilities, including the existing ones, enabling measurements of low-energy charged particles in a laboratory beamline.
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