Simulating Magnetic Fields for nEDM – UROP Spring Symposium 2021

Simulating Magnetic Fields for nEDM

Nicole Baalbaki

Nicole Baalbaki

Pronouns: She/her

Research Mentor(s): Timothy Chupp, Professor
Research Mentor School/College/Department: Physics, College of Literature, Science, and the Arts
Presentation Date: Thursday, April 22, 2021
Session: Session 5 (3pm-3:50pm)
Breakout Room: Room 18
Presenter: 2

Event Link


The Los Alamos nEDM experiment measures the electric dipole moment of a neutron, which could improve our understanding of the dominance of matter versus antimatter in the universe. For the experiment, we need to know the magnetic field and track the neutron spin along its path from the neutron source to the experiment. The magnetic field was calculated with a commercial program, which integrates currents in magnet windings. A component of the field was reverse engineered by comparing it to a map of the magnetic field of two coaxial solenoids. We altered the current, windings, lengths, and inner and outer radii for both solenoids. It was determined that a radii ratio of 0.55 and a winding ratio of 6:5 yielded an excellent match to the data. The solenoid field combined with calculations of fields produced by a combination of additional coils will be used to generate the fields over the full neutron path and used to predict the effect on the neutron spin and guide design modifications.

Authors: Nicole Baalbaki, Chelsea Hendrus, Felicity Hills, Timothy Chupp
Research Method: Experimental Research

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