Minimising the Residual Field and Field Gradient in a Magnetically Shielded Room for an nEDM experiment at Los Alamos National Laboratory

Authors

Chamindu S. Amarasinghe, Valparaiso UniversityFollow

Faculty Sponsor

Shirvel Stanislaus

College

Arts and Sciences

Department/Program

Physics

ORCID Identifier(s)

orcid.org/0000-0001-7789-651X

Presentation Type

Poster Presentation

Symposium Date

Summer 7-31-2017

Abstract

The LANL neutron Electric Dipole Moment (nEDM) experiment is an effort to set a sensitivity limit of 3.2 × 10-27 e·cm on the electric dipole moment of the neutron, an order of magnitude smaller than the current upper limit. The experiment is enclosed in a two layer Mu-metal magnetically shielded room (MSR) to eliminate magnetic noise from the environment. The MSR is degaussed to sufficiently reduce its residual magnetic field and field gradient. The MSR is designed for residual fields as low as 30 nT while the experiment requires a field gradient of 1 nT/m or smaller. Here we report on the degaussing procedure and the resulting improvement in the shielding prowess of the MSR.

Biographical Information about Author(s)

Physics and Mathematics major at Valparaiso University. Current work resulted from a summer spent at Los Alamos National Laboratory.

Recommended Citation

Amarasinghe, Chamindu S., "Minimising the Residual Field and Field Gradient in a Magnetically Shielded Room for an nEDM experiment at Los Alamos National Laboratory" (2017). Summer Interdisciplinary Research Symposium. 10.
https://scholar.valpo.edu/sires/10