P. Fierlinger
YOU?
Author Swipe
View article: Scalar-Magnetometer Search for Ultralight Dark Photon Dark Matter with a Single-Site, Two-Sensor Array: A 6-Channel DTFT Likelihood Analysis with Scalar Optically Pumped Magnetometers
Scalar-Magnetometer Search for Ultralight Dark Photon Dark Matter with a Single-Site, Two-Sensor Array: A 6-Channel DTFT Likelihood Analysis with Scalar Optically Pumped Magnetometers Open
We report on a laboratory search for ultralight dark photon dark matter using a single-site, two-sensor scalar magnetometer array. The experiment employs two scalar optically pumped magnetometers (OPMs) operated in a differential configura…
View article: Avoiding Blindness in Baryon Number Violating Processes: Free-Beam and Intranuclear Paths to Neutron-Antineutron Transitions
Avoiding Blindness in Baryon Number Violating Processes: Free-Beam and Intranuclear Paths to Neutron-Antineutron Transitions Open
Experimental searches for neutron--antineutron ($n \rightarrow \bar n$) transitions can be considered via two approaches: conversion in free-neutron beams and intranuclear transformation leading to matter instability in large-mass detector…
View article: Towards Precise Simulations and Inference for the Neutron EDM
Towards Precise Simulations and Inference for the Neutron EDM Open
Precision measurements of neutron properties, like its permanent electric dipole moment, rely on understanding complex experimental setups in detail. We show how the properties of stored and transported ultracold neutron ensembles can be s…
View article: High-Density Ultracold Neutron Source for Low-Energy Particle Physics Experiments
High-Density Ultracold Neutron Source for Low-Energy Particle Physics Experiments Open
SuperSUN, a new superthermal source of ultracold neutrons (UCN) at the Institut Laue-Langevin, exploits inelastic scattering of neutrons in isotopically pure superfluid $^4$He at temperatures below $0.6\,$K. For the first time, continuous …
View article: The HIBEAM instrument at the European spallation source
The HIBEAM instrument at the European spallation source Open
The European spallation source (ESS) will be the world’s brightest neutron source and will open a new intensity frontier in particle physics. The HIBEAM collaboration aims to exploit the unique potential of the ESS with a dedicated ESS ins…
View article: Detecting the Coupling of Axion Dark Matter to Neutron Spins at Spallation Sources via Rabi Oscillation
Detecting the Coupling of Axion Dark Matter to Neutron Spins at Spallation Sources via Rabi Oscillation Open
We propose a novel detection method for axion dark matter using the Rabi oscillation of neutron spins in beam-based measurements. If axions couple to neutron spins, a background oscillating axion dark matter field would drive transitions b…
View article: Proposal for a Ramsey Neutron-Beam Experiment to Search for Ultralight Axion Dark Matter at the European Spallation Source
Proposal for a Ramsey Neutron-Beam Experiment to Search for Ultralight Axion Dark Matter at the European Spallation Source Open
High-intensity neutron beams, such as those available at the European Spallation Source (ESS), provide new opportunities for fundamental discoveries. Here, we discuss a novel Ramsey neutron-beam experiment to search for ultralight axion da…
View article: Weak magnetic field effects in biology are measurable—accelerated<i>Xenopus</i>embryogenesis in the absence of the geomagnetic field
Weak magnetic field effects in biology are measurable—accelerated<i>Xenopus</i>embryogenesis in the absence of the geomagnetic field Open
Despite decades of reports of weak magnetic field effects in biology across the tree of life and on a broad range of cell types, the evidence to date remains met with skepticism. To remedy this, we present open-data, large-scale, and varie…
View article: Demonstration with very-cold neutrons of developments in Fourier time-of-flight
Demonstration with very-cold neutrons of developments in Fourier time-of-flight Open
We demonstrate recent developments in neutron Fourier time-of-flight in an experiment using very-cold neutrons. The implementation of a novel sinusoidal stator design eliminates a systematic effect associated with triangular modulation in …
View article: A Ramsey Neutron-Beam Experiment to Search for Ultralight Axion Dark Matter at the ESS
A Ramsey Neutron-Beam Experiment to Search for Ultralight Axion Dark Matter at the ESS Open
High-intensity neutron beams, such as those available at the European Spallation Source (ESS), provide new opportunities for fundamental discoveries. Here we discuss a novel Ramsey neutron-beam experiment to search for ultralight axion dar…
View article: The HIBEAM Instrument at the European Spallation Source
The HIBEAM Instrument at the European Spallation Source Open
The European Spallation Source (ESS) will be the world's brightest neutron source and will open a new intensity frontier in particle physics. The HIBEAM collaboration aims to exploit the unique potential of the ESS with a dedicated ESS ins…
View article: Generative adversarial networks for scintillation signal simulation in EXO-200
Generative adversarial networks for scintillation signal simulation in EXO-200 Open
Generative Adversarial Networks trained on samples of simulated or actual events have been proposed as a way of generating large simulated datasets at a reduced computational cost. In this work, a novel approach to perform the simulation o…
View article: A Small Scale Optically Pumped Fetal Magnetocardiography System
A Small Scale Optically Pumped Fetal Magnetocardiography System Open
Introduction: Fetal magnetocardiography (fMCG) is considered the best technique for diagnosis of fetal arrhythmia. It is superior to more widely used methods such as fetal, fetal electrocardiography, and cardiotocography for evaluation of …
View article: Design of an optimized nested-mirror neutron reflector for a NNBAR experiment
Design of an optimized nested-mirror neutron reflector for a NNBAR experiment Open
The NNBAR experiment for the European Spallation Source will search for free neutrons converting to antineutrons with an expected sensitivity improvement of three orders of magnitude compared to the last such search. This paper describes b…
View article: Search for Two-neutrino Double-Beta Decay of $^{136}\rm Xe$ to the $0^+_1$ excited state of $^{136}\rm Ba$ with the Complete EXO-200 Dataset
Search for Two-neutrino Double-Beta Decay of $^{136}\rm Xe$ to the $0^+_1$ excited state of $^{136}\rm Ba$ with the Complete EXO-200 Dataset Open
A new search for two-neutrino double-beta ($2νββ$) decay of $^{136}\rm Xe$ to the $0^+_1$ excited state of $^{136}\rm Ba$ is performed with the full EXO-200 dataset. A deep learning-based convolutional neural network is used to discriminat…
View article: Search for MeV electron recoils from dark matter in EXO-200
Search for MeV electron recoils from dark matter in EXO-200 Open
We present a search for electron-recoil signatures from the charged-current absorption of fermionic dark matter using the EXO-200 detector. We report an average electron-recoil background rate of 6.8 × 104 cts kg–1 yr…
View article: Approaches to high-density storage experiments with in-situ production and detection of ultracold neutrons
Approaches to high-density storage experiments with in-situ production and detection of ultracold neutrons Open
Low counting statistics is one of the most important challenges in modern experiments with ultracold neutrons (UCN). UCN densities in superthermal sources based on superfluid helium are normally much higher than those after UCN delivery to…
View article: Towards an electrostatic storage ring for fundamental physics measurements
Towards an electrostatic storage ring for fundamental physics measurements Open
We describe a new table-top electrostatic storage ring concept for 30 keV polarized ions with fixed spin orientation. The device will ultimately be capable of measuring magnetic fields with a resolution of 10 −20 T with sub-mHz bandwidth. …
View article: Towards an electrostatic storage ring for fundamental physics measurements
Towards an electrostatic storage ring for fundamental physics measurements Open
We describe a new table-top electrostatic storage ring concept for $30$ keV polarized ions at frozen spin condition. The device will ultimately be capable of measuring magnetic fields with a resolution of 10$^{-21}$ T with sub-mHz bandwidt…
View article: The development of the NNBAR experiment
The development of the NNBAR experiment Open
The NNBAR experiment for the European Spallation Source will search for free neutrons converting to antineutrons with a sensitivity improvement of three orders of magnitude compared to the last such search. This paper describes progress to…
View article: A lightweight magnetically shielded room with active shielding
A lightweight magnetically shielded room with active shielding Open
View article: Ultracold neutron storage in a bottle coated with the fluoropolymer CYTOP
Ultracold neutron storage in a bottle coated with the fluoropolymer CYTOP Open
The fluoropolymer CYTOP was investigated in order to evaluate its suitability as a coating material for ultracold neutron (UCN) storage vessels. Using neutron reflectometry on CYTOP-coated silicon wafers, its neutron optical potential was …
View article: A highly drift-stable atomic magnetometer for fundamental physics experiments
A highly drift-stable atomic magnetometer for fundamental physics experiments Open
We report the design and performance of a nonmagnetic drift stable optically pumped cesium magnetometer with a measured sensitivity of 35 fT at 200 s integration time and stability below 50 fT between 70 and 600 s. The sensor is based on t…
View article: The EXO-200 detector, part II: auxiliary systems
The EXO-200 detector, part II: auxiliary systems Open
The EXO-200 experiment searched for neutrinoless double-beta decay of 136 Xe with a single-phase liquid xenon detector. It used an active mass of 110 kg of 80.6%-enriched liquid xenon in an ultra-low background time projection chamber with…
View article: Search for Majoron-emitting modes of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Xe</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>136</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math> double beta decay with the complete EXO-200 dataset
Search for Majoron-emitting modes of double beta decay with the complete EXO-200 dataset Open
A search for Majoron-emitting modes of the neutrinoless double beta decay of 136Xe is performed with the full EXO-200 dataset. This dataset consists of a total 136Xe exposure of 234.1 kg · yr, and includes data with d…
View article: Search for Majoron-emitting modes of $^{136}$Xe double beta decay with the complete EXO-200 dataset
Search for Majoron-emitting modes of $^{136}$Xe double beta decay with the complete EXO-200 dataset Open
A search for Majoron-emitting modes of the neutrinoless double-beta decay of ¹³⁶Xe is performed with the full EXO-200 dataset. This dataset consists of a total ¹³⁶Xe exposure of 234.1 kg⋅yr, and includes data with detector upgrades that ha…
View article: The bose-einstein condensate and cold atom laboratory
The bose-einstein condensate and cold atom laboratory Open
Microgravity eases several constraints limiting experiments with ultracold and condensed atoms on ground. It enables extended times of flight without suspension and eliminates the gravitational sag for trapped atoms. These advantages motiv…
View article: Measurement of the scintillation and ionization response of liquid xenon at MeV energies in the EXO-200 experiment
Measurement of the scintillation and ionization response of liquid xenon at MeV energies in the EXO-200 experiment Open
In this work, liquid xenon (LXe) is employed in a number of current and future detectors for rare event searches. We use the EXO-200 experimental data to measure the absolute scintillation and ionization yields generated by γ interactions …
View article: Measurement of the Spectral Shape of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>β</mml:mi></mml:math>-Decay of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Xe</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>137</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math> to the Ground State of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Cs</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>137</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math> in EXO-200 and Comparison with Theory
Measurement of the Spectral Shape of the -Decay of to the Ground State of in EXO-200 and Comparison with Theory Open
We report on a comparison between the theoretically predicted and experimentally measured spectra of the first-forbidden nonunique β-decay transition ^{137}Xe(7/2^{-})→^{137}Cs(7/2^{+}). The experimental data were acquired by the EXO-200 e…
View article: A scalable high-performance magnetic shield for very long baseline atom interferometry
A scalable high-performance magnetic shield for very long baseline atom interferometry Open
We report on the design, construction, and characterization of a 10 m-long high-performance magnetic shield for very long baseline atom interferometry. We achieve residual fields below 4 nT and longitudinal inhomogeneities below 2.5 nT/m o…