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Physics and Astronomy

Physics & Astronomy Colloquium

3:30 PM, Friday, October 5, 2012
Room 155, Chem-Phys Building

Dr. Chris Crawford
Department of Physics and Astronomy
University of Kentucky

Fundamental nuclear symmetries meet classical electrodynamic symmetries at the SNS.

Discrete symmetries in low energy neutron systems are ideal in many ways for studying nuclear structure, weak interaction, and physics beyond the standard model. The Spallation Neutron Source at ORNL has a dedicated beamline (FnPB) with a suite of experiments to study nuclear symmetries. I will discuss recent data from the NPDGamma experiment and progress towards future experiments on this beamline: n-3He, Nab, and nEDM. Static and RF magnetic fields are critical components for manipulating neutrons in each of these experiments. I will describe new techniques we are developing to design precision coils using the magnetic scalar potential and to construct these coils with an industrial robotic arm. This novel interpretation of the magnetic scalar potential lends itself to elegant illustrations of the mixed symmetry between electric and magnetic fields.

Refreshments will be served in CP 177 at 3:15 PM