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Oct 15 – 20, 2017
Harrison Hot Springs
Canada/Pacific timezone

Progress on the high-voltage and EDM cell studies for the TRIUMF neutron EDM experiment

Oct 18, 2017, 2:10 PM
Harrison Hot Springs

Harrison Hot Springs

100 Esplanade Avenue, Harrison Hot Springs, BC Canada V0M 1K0
Oral High voltage and electric field control (generation, leakage currents,...) WeAf1


Dr Florian Kuchler (TRIUMF)


The currently established best limit on the neutron EDM was obtained by eliminating and investigating main systematic effects using an atomic co-magnetometer inside the neutron storage volume. The next generation neutron EDM search at TRIUMF aims to introduce 129-Xe as co-magnetometer due to its low neutron absorption cross section. An optical detection scheme of 129-Xe spin precession is available using a transition involving two photons at 256 nm. Ultimately, the goal is an optically probed dual co-magnetometer using both 129-Xe and 199-Hg inside the neutron storage cell to further improve understanding and cancellation of systematic effects. While 199-Hg is an established co-magnetometer in high electric fields xenon has to be studied for its dielectric properties in the pressure range of interest. The high-voltage test setup at TRIUMF is built to measure the high-voltage breakdown properties of various gas mixtures of 199-Hg/129-Xe at total pressures of $10^{-2}$ to $10^{-5}$ mbar. In this talk the current status of the high voltage test setup and EDM cell design will be discussed.

Primary author

Dr Florian Kuchler (TRIUMF)

Presentation materials