activity
20212026
most citedSearch for an interaction mediated by axion-like particles with ultracold neutrons at the PSI

6 citations · 8 across the 7 of their papers we have counts for

collaborators

9 papers

hep-ex2026

Laboratory constraints on peV-scale mass splitting between ordinary and sterile neutron states

N. J. Ayres, Z. Berezhiani, G. Bison +19

Sterile states of matter, represented by a parallel ``mirror'' sector, may contribute to the observed dark matter in the Universe. We investigated the parameter space of neutron $(…

nucl-ex2026

New high-sensitivity search for neutron to mirror-neutron oscillations at the PSI UCN source

N. J. Ayres, Z. Berezhiani, G. Bison +19

In a search for potential signals of neutron (n) to mirror-neutron (n') oscillations, a collaboration centered at the Paul Scherrer Institute (PSI) investigated the remaining param…

physics.ins-det2026★ 1 cited

Simulation and optimization of the Active Magnetic Shield of the n2EDM experiment

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

The n2EDM experiment at the Paul Scherrer Institute aims to conduct a high-sensitivity search for the electric dipole moment of the neutron. Magnetic stability and control are achi…

hep-ex2025

Ultracold neutron energy spectrum and storage properties from magnetically induced spin depolarization

N. J. Ayres, G. Ban, G. Bison +53

We present a novel method for extracting the energy spectrum of ultracold neutrons from magnetically induced spin depolarization measurements using the n2EDM apparatus. This method…

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-det2023

A large 'Active Magnetic Shield' for a high-precision experiment

C. Abel, N. J. Ayres, G. Ban +48

We present a novel Active Magnetic Shield (AMS), designed and implemented for the n2EDM experiment at the Paul Scherrer Institute. The experiment will perform a high-sensitivity se…

nucl-ex2023★ 6 cited

Search for an interaction mediated by axion-like particles with ultracold neutrons at the PSI

N. J. Ayres, G. Bison, K. Bodek +44

We report on a search for a new, short-range, spin-dependent interaction using a modified version of the experimental apparatus used to measure the permanent neutron electric dipol…

physics.ins-det2021★ 1 cited

Improved search for neutron to mirror-neutron oscillations in the presence of mirror magnetic fields with a dedicated apparatus at the PSI UCN source

N. J. Ayres, Z. Berezhiani, R. Biondi +22

While the international nEDM collaboration at the Paul Scherrer Institut (PSI) took data in 2017 that covered a considerable fraction of the parameter space of claimed potential si…