Mr
Shomi Ahmed
(for the TRIUMF Japan-Canada UCN Collaboration)
18/10/2017, 15:00
Magnetic field control (passive and active shielding, coil design, current sources)
Poster
The existence of a non-zero neutron electric dipole moment (nEDM) would violate parity and time-reversal symmetry. Extensions to the Standard Model predict the nEDM to be $10^{-26}$ -- $10^{-28}$ e-cm. The current best upper limit set by Sussex/RAL/ILL nEDM experiment is $3.0 \times 10^{-26}$ e-cm. The nEDM experiment at TRIUMF is aiming at the $10^{-27}$ e-cm sensitivity level . We are...
Emily Altiere
(University of British Columbia),
Eric Miller
(University of British Columbia)
18/10/2017, 15:00
Poster
The nEDM (neutron electric dipole moment) project at TRIUMF’s recently established ultra cold neutron (UCN) facility in Canada will introduce a dual co-magnetometer with cohabiting 129Xe and 199Hg for measuring precise magnetic fields within a neutron storage cell. By simultaneously incorporating two atomic species we can deduce both the magnitude and gradient of the magnetic fields, thereby...
Dr
arnaud leredde
(LPSC, Université Grenoble-Alpes)
18/10/2017, 15:00
Poster
In the scope of the n2EDM experiment, aiming for a sensitivity of $σ_{d_n }=1×10^{-27}$e.cm, the precise measurement of the magnetic field and its gradients is critical. Taking advantage of the gravitational shift between the neutrons and the mercury atoms of the co-magnetometer to correct for the false EDM induced by the relativistic motional field, this problem reduces to the knowledge of...
Ms
Solange Emmenegger
(ETH Zürich)
18/10/2017, 15:00
Experimental techniques (cryogenic, room temperature, crystal)
Poster
The nEDM experiment at the Paul Scherrer Institute (PSI) has finished data taking and preparations for the installation of the new n2EDM apparatus are in progress. This poster presents the best performances of the nEDM experiment in terms of the transverse spin relaxation time $T_2$, the visibility $\alpha$ and the best statistical sensitivity per day. We also show the best performances of the...
Steve Sidhu
(TRIUMF, SFU)
18/10/2017, 15:00
Poster
The newly installed vertical source at TRIUMF will enable the production of
neutrons with energies below 300~neV, referred to as ultracold neutrons (UCN).
A superfluid helium cryostat uses three cooling stages and a heat exchanger to
produce isopure He-II at <1K. Fast neutrons are produced through spallation
of a tungsten target by a proton beam from the TRIUMF 520~MeV cyclotron.
These...
Ms
Taraneh Andalib
(University of Manitoba/TRIUMF/University of Winnipeg)
18/10/2017, 15:00
Poster
The neutron EDM experiment at TRIUMF aims to measure the nEDM to the
precision of ~$10^{−27}$ e$\cdot$cm by using a new superfluid He ultracold
neutron (UCN) source. The Japan-Canada UCN source is unique in
combining a neutron spallation source with superfluid helium. The new
UCN source is expected to yield the highest density of UCNs
worldwide. The ongoing research on the present...
