Daniel S. Swetz
YOU?
Author Swipe
View article: Impact of embedded $$^{163}$$Ho on the performance of the transition-edge sensor microcalorimeters of the HOLMES experiment
Impact of embedded $$^{163}$$Ho on the performance of the transition-edge sensor microcalorimeters of the HOLMES experiment Open
We present a detailed investigation of the performance of transition-edge sensor (TES) microcalorimeters with $$^{163}$$ Ho atoms embedded by ion implantation, as part of the HOLMES experiment aimed at neutrino mass determination. The i…
View article: Most Stringent Bound on Electron Neutrino Mass Obtained with a Scalable Low-Temperature Microcalorimeter Array
Most Stringent Bound on Electron Neutrino Mass Obtained with a Scalable Low-Temperature Microcalorimeter Array Open
The determination of the absolute neutrino mass scale remains a fundamental open question in particle physics, with profound implications for both the standard model and cosmology. Direct kinematic measurements, independent of model-depend…
View article: Phenomenological Modeling of the $^{163}$Ho Calorimetric Electron Capture Spectrum from the HOLMES Experiment
Phenomenological Modeling of the $^{163}$Ho Calorimetric Electron Capture Spectrum from the HOLMES Experiment Open
We present a comprehensive phenomenological analysis of the calorimetric electron capture (EC) decay spectrum of $^{163}$Ho as measured by the HOLMES experiment. Using high-statistics data, we unfold the instrumental energy resolution from…
View article: Primary activity measurement of an Am-241 solution using microgram inkjet gravimetry and decay energy spectrometry
Primary activity measurement of an Am-241 solution using microgram inkjet gravimetry and decay energy spectrometry Open
We demonstrate a method for radionuclide assay that is spectroscopic with 100% counting efficiency for alpha decay. Advancing both cryogenic decay energy spectrometry (DES) and drop-on-demand inkjet metrology, a solution of Am-241 was assa…
View article: Charge-exchange processes in EBIT: implications for spectral analysis of few-electronFe ions
Charge-exchange processes in EBIT: implications for spectral analysis of few-electronFe ions Open
Charge-exchange recombination with neutral atoms significantly influences the ionization balance in electron beam ion traps (EBIT) because its cross section is relatively large compared to cross sections of electron collision induced proce…
View article: Towards Precision Spectroscopy of Antiprotonic Atoms for Probing Strong-field QED
Towards Precision Spectroscopy of Antiprotonic Atoms for Probing Strong-field QED Open
International audience
View article: Exploring BiSn Sphere Attachment of Absorbers for Gamma-Ray TES
Exploring BiSn Sphere Attachment of Absorbers for Gamma-Ray TES Open
View article: Towards Precision Spectroscopy of Antiprotonic Atoms for Probing Strong-field QED
Towards Precision Spectroscopy of Antiprotonic Atoms for Probing Strong-field QED Open
PAX (antiProtonic Atom X-ray spectroscopy) is a new experiment with the aim to test strong-field quantum electrodynamics (QED) effects by performing high-precision x-ray spectroscopy of antiprotonic atoms. By utilizing advanced microcalori…
View article: Detecting and Correcting Gain Jumps in TES Microcalorimeters
Detecting and Correcting Gain Jumps in TES Microcalorimeters Open
Arrays of microcalorimeters based on transition-edge sensors (TESs) are being actively deployed to laboratories all over the world. A TES microcalorimeter array produces very large quantities of data and users of these devices have varying…
View article: Spectroscopic Measurements and Models of Energy Deposition in the Substrate of Quantum Circuits by Natural Ionizing Radiation
Spectroscopic Measurements and Models of Energy Deposition in the Substrate of Quantum Circuits by Natural Ionizing Radiation Open
Naturally occurring background radiation is a potential source of correlated decoherence events in superconducting qubits that will challenge error-correction schemes. In order to characterize the radiation environment in an unshielded lab…
View article: Kinetic inductance current sensor for visible to near-infrared wavelength transition-edge sensor readout
Kinetic inductance current sensor for visible to near-infrared wavelength transition-edge sensor readout Open
View article: Primary activity measurement of an Am-241 solution using microgram inkjet gravimetry and decay energy spectrometry
Primary activity measurement of an Am-241 solution using microgram inkjet gravimetry and decay energy spectrometry Open
We demonstrate a method for radionuclide assay that is spectroscopic with 100 % counting efficiency for alpha decay. Advancing both cryogenic decay energy spectrometry (DES) and drop-on-demand inkjet metrology, a solution of Am-241 was ass…
View article: Correction: Flexible Superconducting Wiring for Integration with Low-Temperature Detector and Readout Fabrication
Correction: Flexible Superconducting Wiring for Integration with Low-Temperature Detector and Readout Fabrication Open
View article: Direct Imaging of Transition-Edge Sensors with Scanning SQUID Microscopy
Direct Imaging of Transition-Edge Sensors with Scanning SQUID Microscopy Open
Significant advancements have been made in understanding the physics of transition-edge sensors (TESs) over the past decade. However, key questions remain, particularly a detailed understanding of the current-dependent resistance of these …
View article: Flexible Superconducting Wiring for Integration with Low-Temperature Detector and Readout Fabrication
Flexible Superconducting Wiring for Integration with Low-Temperature Detector and Readout Fabrication Open
We present a method of creating high-density superconducting flexible wiring on flexible thin silicon substrates. The flexible wiring, called SOI flex , is created by depositing superconducting wiring on a silicon-on-insulator (SOI) wafer,…
View article: Few-electron highly charged muonic Ar atoms verified by electronic $K$ x rays
Few-electron highly charged muonic Ar atoms verified by electronic $K$ x rays Open
Electronic $K$ x rays emitted by muonic Ar atoms in the gas phase were observed using a superconducting transition-edge-sensor microcalorimeter. The high-precision energy spectra provided a clear signature of the presence of muonic atoms a…
View article: Extracting the electronic structure of light elements in bulk materials through a Compton scattering method in the readily accessible hard x-ray regime
Extracting the electronic structure of light elements in bulk materials through a Compton scattering method in the readily accessible hard x-ray regime Open
Our Compton profile measurements of Ti and TiH2 using readily available hard X-ray radiation at 27.5 keV, detected by both a Hitachi Vortex silicon-drift detector and a high-resolution superconducting transition-edge sensor array, are foun…
View article: Kinetic inductance current sensor for visible to near-infrared wavelength transition-edge sensor readout
Kinetic inductance current sensor for visible to near-infrared wavelength transition-edge sensor readout Open
Single-photon detectors based on the superconducting transition-edge sensor are used in a number of visible to near-infrared applications, particularly for photon-number-resolving measurements in quantum information science. To be practica…
View article: Effects of Stray Magnetic Field on Transition-Edge Sensors in Gamma-Ray Microcalorimeters
Effects of Stray Magnetic Field on Transition-Edge Sensors in Gamma-Ray Microcalorimeters Open
Superconducting transition-edge sensors (TESs) used in X-ray and $$\gamma$$ -ray microcalorimeters suffer degraded performance if cooled in a magnetic field B sufficient to trap flux in the sensors. We report measurements of $$\gamma$$ …
View article: Nanoscale Three-Dimensional Imaging of Integrated Circuits Using a Scanning Electron Microscope and Transition-Edge Sensor Spectrometer
Nanoscale Three-Dimensional Imaging of Integrated Circuits Using a Scanning Electron Microscope and Transition-Edge Sensor Spectrometer Open
X-ray nanotomography is a powerful tool for the characterization of nanoscale materials and structures, but it is difficult to implement due to the competing requirements of X-ray flux and spot size. Due to this constraint, state-of-the-ar…
View article: Spectroscopic measurements and models of energy deposition in the substrate of quantum circuits by natural ionizing radiation
Spectroscopic measurements and models of energy deposition in the substrate of quantum circuits by natural ionizing radiation Open
Naturally occurring background radiation is a source of correlated decoherence events in superconducting qubits that will challenge error-correction schemes. To characterize the radiation environment in an unshielded laboratory, we perform…
View article: Metal-metal attachment of absorbers for Gamma-Ray TES
Metal-metal attachment of absorbers for Gamma-Ray TES Open
In this work, we are reporting on the development of a method to attach Sn absorbers to the Transition Edge Sensors (TESs) with BiSn spheres (metal-to-metal attachment), using a die bonder, with the aim of improving thermalization, potenti…
View article: Flexible superconducting wiring for integration with low temperature detector and readout fabrication
Flexible superconducting wiring for integration with low temperature detector and readout fabrication Open
We present a method of creating high-density superconducting flexible wiring on flexible thin silicon substrates. The flexible wiring, called SOI flex, is created by depositing superconducting wiring on a silicon on insulator (SOI) wafer, …
View article: Proof-of-Principle Experiment for Testing Strong-Field Quantum Electrodynamics with Exotic Atoms: High Precision X-Ray Spectroscopy of Muonic Neon
Proof-of-Principle Experiment for Testing Strong-Field Quantum Electrodynamics with Exotic Atoms: High Precision X-Ray Spectroscopy of Muonic Neon Open
To test bound-state quantum electrodynamics (BSQED) in the strong-field regime, we have performed high precision x-ray spectroscopy of the 5g-4f and 5f- 4d transitions (BSQED contribution of 2.4 and 5.2 eV, respectively) of muonic neon ato…
View article: A tabletop X-ray tomography instrument for nanometer-scale imaging: reconstructions
A tabletop X-ray tomography instrument for nanometer-scale imaging: reconstructions Open
View article: ASCENT: a balloon-borne hard x-ray imaging spectroscopy telescope using transition edge sensor microcalorimeter detectors
ASCENT: a balloon-borne hard x-ray imaging spectroscopy telescope using transition edge sensor microcalorimeter detectors Open
Core collapse supernovae are thought to be one of the main sources in the galaxy of elements heavier than iron. Understanding the origin of the elements is thus tightly linked to our understanding of the explosion mechanism of supernovae a…
View article: The status of the HOLMES experiment
The status of the HOLMES experiment Open
This work summarizes the current status of HOLMES, a calorimetric experiment for the direct neutrino mass measurement. The state-of-the-art in this field is represented by the KATRIN spectrometer that is under data-taking aiming at a sensi…
View article: ASCENT - A balloon-borne hard X-ray imaging spectroscopy telescope using transition edge sensor microcalorimeter detectors
ASCENT - A balloon-borne hard X-ray imaging spectroscopy telescope using transition edge sensor microcalorimeter detectors Open
Core collapse supernovae are thought to be one of the main sources in the galaxy of elements heavier than iron. Understanding the origin of the elements is thus tightly linked to our understanding of the explosion mechanism of supernovae a…
View article: Status of HOLMES, an experiment for measuring the nu mass
Status of HOLMES, an experiment for measuring the nu mass Open
One of the major challenges in nowadays particle physics and astrophysics is the determination of the absolute neutrino mass scale. The HOLMES experiment aims at exploiting the calorimetric approach to directly measure the neutrino mass th…
View article: A tabletop x-ray tomography instrument for nanometer-scale imaging: demonstration of the 1,000-element transition-edge sensor subarray
A tabletop x-ray tomography instrument for nanometer-scale imaging: demonstration of the 1,000-element transition-edge sensor subarray Open
We report on the 1,000-element transition-edge sensor (TES) x-ray spectrometer implementation of the TOMographic Circuit Analysis Tool (TOMCAT). TOMCAT combines a high spatial resolution scanning electron microscope (SEM) with a highly eff…