TY - JOUR
T1 - Cryogenic magnetic coil and superconducting magnetic shield for neutron electric dipole moment searches
AU - Slutsky, S.
AU - Swank, C. M.
AU - Biswas, A.
AU - Carr, R.
AU - Escribano, J.
AU - Filippone, B. W.
AU - Griffith, W. C.
AU - Mendenhall, M.
AU - Nouri, N.
AU - Osthelder, C.
AU - Pérez Galván, A.
AU - Picker, R.
AU - Plaster, B.
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017/8/1
Y1 - 2017/8/1
N2 - A magnetic coil operated at cryogenic temperatures is used to produce spatial, relative field gradients below 6 ppm/cm, stable for several hours. The apparatus is a prototype of the magnetic components for a neutron electric dipole moment (nEDM) search, which will take place at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory using ultra-cold neutrons (UCN). That search requires a uniform magnetic field to mitigate systematic effects and obtain long polarization lifetimes for neutron spin precession measurements. This paper details upgrades to a previously described apparatus [1], particularly the introduction of super-conducting magnetic shielding and the associated cryogenic apparatus. The magnetic gradients observed are sufficiently low for the nEDM search at SNS.
AB - A magnetic coil operated at cryogenic temperatures is used to produce spatial, relative field gradients below 6 ppm/cm, stable for several hours. The apparatus is a prototype of the magnetic components for a neutron electric dipole moment (nEDM) search, which will take place at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory using ultra-cold neutrons (UCN). That search requires a uniform magnetic field to mitigate systematic effects and obtain long polarization lifetimes for neutron spin precession measurements. This paper details upgrades to a previously described apparatus [1], particularly the introduction of super-conducting magnetic shielding and the associated cryogenic apparatus. The magnetic gradients observed are sufficiently low for the nEDM search at SNS.
KW - Cryogenic
KW - Electric dipole moment
KW - Geometric phase
KW - Magnetic fields
KW - Magnetic gradients
KW - Superconducting
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U2 - 10.1016/j.nima.2017.05.005
DO - 10.1016/j.nima.2017.05.005
M3 - Article
AN - SCOPUS:85019218133
SN - 0168-9002
VL - 862
SP - 36
EP - 48
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ER -