Measurement of the Temperature Dependence of the Dielectric Constant of PMMA

Faculty Sponsor

Shrivel Stanislaus





Document Type

Poster Presentation

Symposium Date

Summer 7-24-2017


The nEDM experiment at Oak Ridge National Laboratory is searching for the electric dipole moment of the neutron to an accuracy of order 10-28 e-cm. In the experiment, ultra cold neutrons are stored in a cell made from PolyMethylMethAcrylate (PMMA) and will be subjected to a 75 kV/cm electric field at 0.4K. In order to calculate the electric field precisely, the dielectric constant of PMMA must be known as a function of temperature. A measurement made last summer (2016) showed that the dielectric constant does change with temperature as measured down to 150K. This summer, we have improved the cryostat and have measured the temperature dependence of the dielectric constant down to 77K. These results will be presented.

Biographical Information about Author(s)

I am a Physics/Astronomy double major at University of Chicago and I became interested in particle/nuclear physics while on a trip to Fermilab last year. I am going into my second year of college and did not have much experience in physics so I decided to pursue an internship over the summer. I learned the basic concepts of what I researched this summer in physics classes, but learned a ton more while researching.

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