Speaker
Ms
Sybille Komposch
(ETHZ)
Description
The nEDM experiment requires very sensitive magnetometers to correct for systematic errors related to magnetic field fluctuations. We present progress on a laser based co-magnetometer which detects the spin precession frequency of 199-Hg atoms in the same volume as the neutrons. With the new laser system, we showed in a proof of principle measurement that we can achieve a fivefold increase of the signal compared to the light from a 204-Hg discharge lamp we have been using. In order to compare laser based and lamp based magnetometer sensitivity, we developed a statistical analysis method based on the Cramer-Rao Lower Bound. This work is supported by the SNF under grant 200020_144473.
Author
Ms
Sybille Komposch
(ETHZ)
Co-author
on behalf of the nEDM collaboration (PSI) -
