Title

Measurement of the Temperature Dependence of the Dielectric Constant of PMMA for the nEDM Experiment at Oak Ridge National Laboratory

Faculty Sponsor

Shrivel Stanislaus

College

Arts and Sciences

Department/Program

Physics and Astronomy

Document Type

Poster Presentation

Symposium Date

Spring 5-4-2017

Abstract

The nEDM experiment at Oak Ridge National Laboratory aims to search for the electric dipole moment of the neutron at the 10-28 level. The experiment is currently in the research and development phase. In the experiment, ultra-cold neutrons stored inside of a container made from PolyMethylMethAcrylate (PMMA) will be subjected to a strong electric field. In order to calculate the electric field within the box very precisely, the dielectric constant of PMMA must be known very well. The experiment will take place at 0.4K, and it is not known if the dielectric constant of PMMA changes as a function of temperature. In order to test this, a simple cryostat was constructed. PMMA was cooled down to 77K, and the dielectric constant of PMMA was measured as a function of temperature. Experimental details and results of the tests will be presented.

Biographical Information about Author(s)

Marcus Ochsendorf is a sophomore physics and chemistry major.

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