Speaker
Mr
Pierrick Flaux
(LPC Caen)
Description
This work presents a preliminary design of the coils system
developped for the neutron electric dipole moment experiment (n2EDM)
at the Paul Sherrer Institute (PSI). The goal of this experiment is to find
new sources of CP violation through the measurement of the neutron
electric dipole. The current best limit of the nEDM measurement, 2.9 $\times$ 10$^{ -26}$
e.cm (90% C.L.) was reached by the RAL-Sussex-ILL collaboration in 2006.
The n2EDM experiment aims at improving by one order of magnitude the
statistical sensitivity while keeping under control the systematics effects.
The gain in sensitivity, as well as the control of the systematics, require
to produce a very uniform field.
First, the requirements on the field uniformity will be reminded.
Then, the design of the main coil B$_{0}$ will be presented. The performances
of this coil, simulated by the COMSOL software, will be shown, as well as
the robustness of the COMSOL predictions. A field uniformity below 10$^{-4}$
is achieved inside the precession chamber. Requirements on the field
gradients are fulfilled. A possible technical design is presented. The
influence of the mechanical imperfections are studied.
| flaux@lpccaen.in2p3.fr |
Primary author
Mr
Pierrick Flaux
(LPC Caen)
Co-authors
Dr
Benjamin Dechenaux
(IRSN)
Mr
Damien Goupillière
(LPC Caen)
Prof.
Gilles Ban
(LPC Caen)
Dr
Thomas Lefort
(LPC Caen)
