A new cryogenic apparatus to search for the neutron electric dipole moment
Name
1908.09937.pdf
Description
Accepted version
Size
9.67 MB
Format
Unknown
Checksum (MD5)
92ff27e6b5bc84d361735e21e9263971
Author(s)
Bessuille, Jason C.
Dow, Karen Ann
Hasell, Douglas K.
Ihloff, Ernest E
Kelsey, James E
Kim, Y.J.
Maxwell, JD
Milner, Richard G
Redwine, Robert P
Tsentalovich, Evgeni P
Date Issued
2019
Journal
Journal of Instrumentation
Publisher
IOP Publishing
Version
Author's final manuscript
Abstract
© 2019 IOP Publishing Ltd and Sissa Medialab. A cryogenic apparatus is described that enables a new experiment, nEDM@SNS, with a major improvement in sensitivity compared to the existing limit in the search for a neutron Electric Dipole Moment (EDM). This apparatus uses superfluid 4He to produce a high density of Ultra-Cold Neutrons (UCN) which are contained in a suitably coated pair of measurement cells. The experiment, to be operated at the Spallation Neutron Source at Oak Ridge National Laboratory, uses polarized 3He from an Atomic Beam Source injected into the superfluid 4He and transported to the measurement cells where it serves as a co-magnetometer. The superfluid 4He is also used as an insulating medium allowing significantly higher electric fields, compared to previous experiments, to be maintained across the measurement cells. These features provide an ultimate statistical uncertainty for the EDM of 2-3× 10-28 e-cm, with anticipated systematic uncertainties below this level.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1088/1748-0221/14/11/P11017
