scholarly journals An apparatus for studying electrical breakdown in liquid helium at 0.4 K and testing electrode materials for the neutron electric dipole moment experiment at the Spallation Neutron Source

2016 ◽  
Vol 87 (4) ◽  
pp. 045113 ◽  
Author(s):  
T. M. Ito ◽  
J. C. Ramsey ◽  
W. Yao ◽  
D. H. Beck ◽  
V. Cianciolo ◽  
...  
Keyword(s):  
Dipole Moment ◽  
Liquid Helium ◽  
Neutron Source ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Electrode Materials ◽  
Electrical Breakdown ◽  
Neutron Electric Dipole Moment ◽  
Spallation Neutron Source

scholarly journals The neutron electric dipole moment experiment at the Spallation Neutron Source

2019 ◽  
Vol 219 ◽  
pp. 02005
Author(s):  
K.K.H. Leung ◽  
M. Ahmed ◽  
R. Alarcon ◽  
A. Aleksandrova ◽  
S. Baeßler ◽  
...  
Keyword(s):  
Dipole Moment ◽  
Neutron Source ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Error Control ◽  
Large Scale ◽  
Measurement Techniques ◽  
Ultracold Neutrons ◽  
Neutron Electric Dipole Moment ◽  
Spallation Neutron Source

Novel experimental techniques are required to make the next big leap in neutron electric dipole moment experimental sensitivity, both in terms of statistics and systematic error control. The nEDM experiment at the Spallation Neutron Source (nEDM@SNS) will implement the scheme of Golub & Lamoreaux [Phys. Rep., 237, 1 (1994)]. The unique properties of combining polarized ultracold neutrons, polarized 3He, and superfluid 4He will be exploited to provide a sensitivity to ∼ 10−28 e · cm. Our cryogenic apparatus will deploy two small (3 L) measurement cells with a high density of ultracold neutrons produced and spin analyzed in situ. The electric field strength, precession time, magnetic shielding, and detected UCN number will all be enhanced compared to previous room temperature Ramsey measurements. Our 3He co-magnetometer offers unique control of systematic effects, in particular the Bloch-Siegert induced false EDM. Furthermore, there will be two distinct measurement modes: free precession and dressed spin. This will provide an important self-check of our results. Following five years of “critical component demonstration,” our collaboration transitioned to a “large scale integration” phase in 2018. An overview of our measurement techniques, experimental design, and brief updates are described in these proceedings.

scholarly journals Neutron electric dipole moment using lattice QCD simulations at the physical point

2021 ◽  
Vol 103 (5) ◽  
Author(s):  
C. Alexandrou ◽  
A. Athenodorou ◽  
K. Hadjiyiannakou ◽  
A. Todaro
Keyword(s):  
Dipole Moment ◽  
Lattice Qcd ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Neutron Electric Dipole Moment ◽  
Physical Point

scholarly journals Grand unification, the neutron electric dipole moment and galaxy formation

Nature ◽  
1981 ◽  
Vol 293 (5827) ◽  
pp. 41-43 ◽  
Author(s):  
John Ellis ◽  
Mary K. Gaillard ◽  
D. V. Nanopoulos ◽  
Serge Rudaz
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Galaxy Formation ◽  
Electric Dipole ◽  
Grand Unification ◽  
Neutron Electric Dipole Moment
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