activity
20132024
most citedMeasurement of the permanent electric dipole moment of the neutron

619 citations · 1.2k across the 18 of their papers we have counts for

collaborators

19 papers

physics.ins-det2024

Generating a highly uniform magnetic field inside the magnetically shielded room of the n2EDM experiment

C. Abel, N. J. Ayres, G. Ban +63

We present a coil system designed to generate a highly uniform magnetic field for the n2EDM experiment at the Paul Scherrer Institute. It consists of a main coil and a set of…

physics.ins-det2023

Achieving ultra-low and -uniform residual magnetic fields in a very large magnetically shielded room for fundamental physics experiments

N. J. Ayres, G. Ban, G. Bison +47

High-precision searches for an electric dipole moment of the neutron (nEDM) require stable and uniform magnetic field environments. We present the recent achievements of degaussing…

physics.ins-det2021★ 53 cited

The design of the n2EDM experiment

N. J. Ayres, G. Ban, L. Bienstman +58

We present the design of a next-generation experiment, n2EDM, currently under construction at the ultracold neutron source at the Paul Scherrer Institute (PSI) with the aim of carr…

physics.ins-det2020★ 3 cited

Characterization of magnetic field noise in the ARIADNE source mass rotor

Nancy Aggarwal, Allard Schnabel, Jens Voigt +19

ARIADNE is a nuclear-magnetic-resonance-based experiment that will search for novel axion-induced spin-dependent interactions between an unpolarized source mass rotor and a nearby…

physics.app-ph2020★ 5 cited

A Three-step Model for Optimizing Coil Spacings Inside Cuboid-shaped Magnetic Shields

Tianhao Liu, Allard Schnabel, Jens Voigt +2

A three-step model for calculating the magnetic field generated by coils inside cuboid-shaped shields like magnetically shielded rooms (MSRs) is presented. The shield is modelled a…

physics.bio-ph2020

Action potentials induce biomagnetic fields in Venus flytrap plants

Anne Fabricant, Geoffrey Z. Iwata, Sönke Scherzer +6

Upon stimulation, plants elicit electrical signals that can travel within a cellular network analogous to the animal nervous system. It is well-known that in the human brain, volta…

physics.atom-ph2020★ 3 cited

Revisiting Xe electric dipole moment measurements applying a new global phase fitting approach

T. Liu, K. Rolfs, I. Fan +6

By measuring the nuclear magnetic spin precession frequencies of polarized Xe and He, a new upper limit on the Xe atomic electric dipole moment (EDM) $ d_\mat…

hep-ex2020★ 619 cited

Measurement of the permanent electric dipole moment of the neutron

C. Abel, S. Afach, N. J. Ayres +81

We present the result of an experiment to measure the electric dipole moment (EDM) of the neutron at the Paul Scherrer Institute using Ramsey's method of separated oscillating magn…

physics.atom-ph2019★ 93 cited

New Limit on the Permanent Electric Dipole Moment of Xe using He Comagnetometry and SQUID Detection

N. Sachdeva, I. Fan, E. Babcock +20

We report results of a new technique to measure the electric dipole moment of Xe with He comagnetometry. Both species are polarized using spin-exchange optical pumping,…

physics.ins-det2019★ 8 cited

PicoTesla absolute field readings with a hybrid 3He/87Rb magnetometer

Christopher Abel, Georg Bison, W. Clark Griffith +10

We demonstrate the use of a hybrid He / Rb magnetometer to measure absolute magnetic fields in the pT range. The measurements were undertaken by probing time-dependent…

physics.ins-det2018★ 14 cited

nEDM experiment at PSI: data-taking strategy and sensitivity of the dataset

C. Abel, N. J. Ayres, G. Ban +40

We report on the strategy used to optimize the sensitivity of our search for a neutron electric dipole moment at the Paul Scherrer Institute. Measurements were made upon ultracold…

physics.ins-det2018★ 34 cited

The n2EDM experiment at the Paul Scherrer Institute

C. Abel, N. J. Ayres, G. Ban +45

We present the new spectrometer for the neutron electric dipole moment (nEDM) search at the Paul Scherrer Institute (PSI), called n2EDM. The setup is at room temperature in vacuum…

physics.atom-ph2015★ 22 cited

Design and performance of an absolute He/Cs magnetometer

H. -C. Koch, G. Bison, Z. D. Grujić +8

We report on the design and performance of a highly sensitive combined He/Cs magnetometer for the absolute measurement of magnetic fields. The magnetometer relies on the magnet…

physics.ins-det2015★ 84 cited

A large-scale magnetic shield with 10^6 damping at mHz frequencies

I. Altarev, M. Bales, D. H. Beck +16

We present a magnetically shielded environment with a damping factor larger than one million at the mHz frequency regime and an extremely low field and gradient over an extended vo…

hep-ex2014★ 41 cited

Constraining interactions mediated by axion-like particles with ultracold neutrons

S. Afach, G. Ban, G. Bison +35

We report a new limit on a possible short range spin-dependent interaction from the precise measurement of the ratio of Larmor precession frequencies of stored ultracold neutrons a…

nucl-ex2014★ 37 cited

A measurement of the neutron to 199Hg magnetic moment ratio

S. Afach, C. A. Baker, G. Ban +51

The neutron gyromagnetic ratio has been measured relative to that of the 199Hg atom with an uncertainty of 0.8 ppm. We employed an apparatus where ultracold neutrons and mercury at…

physics.ins-det2014★ 64 cited

Dynamic stabilization of the magnetic field surrounding the neutron electric dipole moment spectrometer at the Paul Scherrer Institute

S. Afach, G. Bison, K. Bodek +34

The Surrounding Field Compensation (SFC) system described in this work is installed around the four-layer Mu-metal magnetic shield of the neutron electric dipole moment spectromete…

physics.ins-det2014★ 107 cited

A magnetically shielded room with ultra low residual field and gradient

I. Altarev, E. Babcock, D. Beck +29

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. T…

physics.ins-det2013

Copper coated carbon fiber reinforced plastics for high and ultra high vacuum applications

F. Burri, M. Fertl, P. Feusi +9

We have used copper-coated carbon fiber reinforced plastic (CuCFRP) for the construction of high and ultra-high vacuum recipients. The vacuum performance is found to be comparable…