6 papers
New Limit on Axion-Like Dark Matter using Cold Neutrons
Ivo Schulthess, Estelle Chanel, Anastasio Fratangelo +8
We report on a search for dark matter axion-like particles (ALPs) using a Ramsey-type apparatus for cold neutrons. A hypothetical ALP-gluon-coupling would manifest in a neutron ele…
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…
Community input to the European Strategy on particle physics: Searches for Permanent Electric Dipole Moments
M. Athanasakis-Kaklamanakis, M. Au, R. Berger +8
Searches for electric dipole moments (EDMs) in fundamental particles and quantum systems with spin are pivotal experiments at the intersection of low-energy and high-precision part…
Measurement of the neutron incoherent scattering length of Hg using stored ultracold neutrons
C. Abel, K. Bodek, E. Chanel +35
We present the first direct measurement of the neutron incoherent scattering length of Hg. The measurement was performed with the Ramsey apparatus of the neutron electric…
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…
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…