Test experiment to search for a neutron EDM by the Laue diffraction method
Abstract
A prototype experiment to measure the neutron electric dipole moment (nEDM) by spin-rotation in a non-centrosymmetric crystal in Laue geometry was carried out in order to investigate the statistical sensitivity and systematic effects of the method. The statistical sensitivity to the nEDM was about ecm per day and can be improved by one order of magnitude for the full scale setup. Systematics was limited by the homogeneity of the magnetic field in the crystal region and by a new kind of spin rotation effect. We attribute this effect to a difference of the two Bloch waves amplitudes in the crystal, which is caused by the presence of a small crystal deformation due to a temperature gradient. In a revised scheme of the experiment, this effect could be exploited for a purposeful manipulation of the Bloch waves.
Cite
@article{arxiv.hep-ex/0512064,
title = {Test experiment to search for a neutron EDM by the Laue diffraction method},
author = {V. V. Fedorov and E. G. Lapin and E. Lelievre-Berna and V. Nesvizhevsky and A. Petoukhov and S. Yu. Semenikhin and T. Soldner and F. Tasset and V. V. Voronin},
journal= {arXiv preprint arXiv:hep-ex/0512064},
year = {2007}
}
Comments
12 pages, 6 figures