Jun 2 – 7, 2019
Simon Fraser University
America/Vancouver timezone
Welcome to the 2019 CAP Congress Program website! / Bienvenue au siteweb du programme du Congrès de l'ACP 2019 !

61 - First high voltage breakdown measurements in a test setup for the TUCAN neutron EDM experiment

Jun 4, 2019, 4:45 PM
SWH 9082 + AQ South-East Corner / coin sud-est (Simon Fraser University)

SWH 9082 + AQ South-East Corner / coin sud-est

Simon Fraser University

Poster (Non-Student) / Affiche (Non-étudiant(e)) Nuclear Physics / Physique nucléaire (DNP-DPN) DNP Poster Session & Student Poster Competition Finals (1) | Session d'affiches DPN et finales du concours d'affiches étudiantes (1)


Florian Kuchler


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 pursued by the TUCAN collaboration aims to introduce 129-Xe as an additional co-magnetometer due to its low neutron absorption cross section. An optical detection scheme of 129-Xe spin precession is available using a two-photon transition.
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 limiting 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. A test setup at TRIUMF is in operation to measure the high-voltage breakdown properties of gases at total pressures of 1e-2 to 1e-4 mbar.
First results from high-voltage breakdown tests using various gases will be presented.

Primary authors

Florian Kuchler Dr Rüdiger Picker (TRIUMF)

Presentation materials