A magnetically shielded room with ultra low residual field and gradient

Abstract

A versatile and portable magnetically shielded room with a field of (700 \pm 200) pT within a central volume of 1m x 1m x 1m and a field gradient less than 300 pT/m is described. This performance represents more than a hundred-fold improvement of the state of the art for a two-layer magnetic shield and provides an environment suitable for a next generation of precision experiments in fundamental physics at low energies; in particular, searches for electric dipole moments of fundamental systems and tests of Lorentz-invariance based on spin-precession experiments. Studies of the residual fields and their sources enable improved design of future ultra-low gradient environments and experimental apparatus.

References in corpus (10)

• Optical Magnetometry
• CPT Violation and the Standard Model
• An Improved Experimental Limit on the Electric Dipole Moment of the Neutron
• Electroweak Baryogenesis
• Electric Dipole Moments of Nucleons, Nuclei, and Atoms: The Standard Model and Beyond
• Improved limit on the permanent electric dipole moment of 199Hg
• New limit on Lorentz and CPT-violating neutron spin interactions
• Test of Lorentz invariance with spin precession of ultracold neutrons
• Limit on Lorentz and CPT violation of the bound Neutron Using a Free Precession 3He/129Xe co-magnetometer
• New constraints on Lorentz invariance violation from the neutron electric dipole moment

Cited by in corpus (21)

• Electric Dipole Moments of the Atoms, Molecules, Nuclei and Particles
• Neutron-Antineutron Oscillations: Theoretical Status and Experimental Prospects
• Electric Dipole Moments: A Global Analysis
• A large-scale magnetic shield with 10^6 damping at mHz frequencies
• Minimizing magnetic fields for precision experiments
• A New Cryogenic Apparatus to Search for the Neutron Electric Dipole Moment
• Measurement of the Permanent Electric Dipole Moment of the ${}^{129}$Xe Atom
• A cryogenic radio-frequency ion trap for quantum logic spectroscopy of highly charged ions
• Probing Dark Energy models with neutrons
• The `n2EDM MSR' -- a very large magnetically shielded room with an exceptional performance for fundamental physics measurements
• A scalable high-performance magnetic shield for Very Long Baseline Atom Interferometry
• The PanEDM Neutron Electric Dipole Moment Experiment at the ILL
• Planar Coil Optimization in a Magnetically Shielded Cylinder
• Sensitivity of Fields Generated within Magnetically Shielded Volumes to Changes in Magnetic Permeability
• How the minuscule can contribute to the big picture: the neutron electric dipole moment project at TRIUMF
• A new approach to search for free neutron-antineutron oscillations using coherent neutron propagation in gas
• Deuterated polyethylene coatings for ultra-cold neutron applications
• Cold highly charged ions in a radio-frequency trap with superconducting magnetic shielding
• A Three-step Model for Optimizing Coil Spacings Inside Cuboid-shaped Magnetic Shields
• Large Magnetic Shielding Factor Measured by Nonlinear Magneto-optical Rotation
• Nonextensive statistics in spin precession