NPA Seminar, Christopher Swank, CalTech, “Advanced Critical Spin Dressing”

Event time: 
Thursday, February 3, 2022 - 1:00pm to 2:00pm
Location: 
Online () See map
Event description: 

Abstract: The neutron electric dipole moment (nEDM) experiment at the Spallation Neutron Source (SNS) will measure the nEDM via interaction with Helium-3. Ultimate sensitivity will be reached in that apparatus by using the critical spin dressing technique. Critical spin dressing is the application of an off-resonant oscillatory field that dresses the neutron and Helium-3 spins to have the same effective Larmor precession. Advanced critical spin dressing techniques are in development that can provide high sensitivity measurements of magnetic field gradients with a large dynamic range. Additionally, this measurement technique will distinguish between gradients responsible for limiting the coherence time versus gradients that generate the geometric phase, a linear-in-E frequency shift. Furthermore for EDM measurements, rotation of the electric field onto the dressing axis can eliminate a majority of the systematic effects from magnetic field fluctuations, while maintaining full sensitivity. A research program has been proposed to develop these techniques at the systematic and operational studies apparatus in the PULSTAR reactor at NCSU.
Please email the host for the Zoom connection information.
Host: Mike Jewell
michael.jewell@yale.edu

Open to: 
undergraduate