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Displaying 26 - 50 of 77

Proceedings of the 2nd CREST Nano-Virtual-Labs Joint Workshop on Superconductivity

October 12, 2021
Author(s)
Kent D. Irwin, James A. Beall, W.Bertrand (Randy) Doriese, William Duncan, S. L. Ferreira, Gene C. Hilton, Rob Horansky, John Mates, Nathan A. Tomlin, Galen O'Neil, Carl D. Reintsema, Dan Schmidt, Joel Ullom, Leila R. Vale
Superconductivity is a powerful tool for the detection of electromagnetic radiation and the energy in particle interactions. One leading superconducting detector technology is the superconducting transition-edge sensor (TES), which uses a superconducting

Design of a 3000 pixel transition-edge sensor x-ray spectrometer for microcircuit tomography

August 1, 2021
Author(s)
Paul Szypryt, Douglas Bennett, William J. Boone, Amber L. Dagel, G Dalton, William Doriese, Malcolm Durkin, Joseph Fowler, Edward Garboczi, Jonathon D. Gard, Gene Hilton, Jozsef Imrek, E S. Jimenez, Vincent Y. Kotsubo, K Larson, Zachary H. Levine, John Mates, D McArthur, Kelsey Morgan, Nathan J. Nakamura, Galen O'Neil, Nathan Ortiz, Christine G. Pappas, Carl Reintsema, Dan Schmidt, Daniel Swetz, K R. Thompson, Joel Ullom, C Walker, Joel C. Weber, Abigail Wessels, J W. Wheeler
Feature sizes in integrated circuits have decreased substantially over time, and it has become increasingly difficult to three-dimensionally image these complex circuits after fabrication. This can be important for process development, defect analysis, and

De-excitation dynamics of muonic atoms revealed by high precision spectroscopy of electronic K x rays using a superconducting transition-edge sensor microcalorimeter

July 27, 2021
Author(s)
Douglas Bennett, W.Bertrand (Randy) Doriese, Malcolm Durkin, Joseph Fowler, Johnathon Gard, Gene C. Hilton, Kelsey Morgan, Galen O'Neil, Carl D. Reintsema, Dan Schmidt, Daniel Swetz, Joel Ullom, Toshiyuki Azuma, Pietro Caradonna, I-Huan Chiu, Tadashi Hashimoto, Ryota Hayakawa, Yuto Ichinohe, Paul Indelicato, TadaAki Isobe, Sohtaro Kanda, Daiji Kato, Miho Katsuragawa, Naritoshi Kawamura, Yasushi Kino, Kenya Kubo, Kairi Mine, Yasuhiro Miyake, Kazuhiko Ninomiya, Hirofumi Noda, Shinji Okada, Takuma Okumura, Kenichi Okutsu, Takahito Osawa, Nancy Paul, Kouichiro Shimomura, Patrick Strasser, Hirotaka Suda, Tadayuki Takahashi, Shinichiro Takeda, Soshi Takeshita, Motonobu Tampo, Hideyuki Tatsuno, XiaoMin Tong, Yasuhiro Ueno, Shin Watanabe, Shinya Yamada
We observed electronic K x rays emitted from muonic iron atoms using a superconducting transition-edge-type sensor microcalorimeter. The energy resolution of 5.2 eV in FWHM allowed us to observe the asymmetric broad profile of the electronic characteristic

Mitigating finite bandwidth effects in time-division- multiplexed SQUID readout of TES arrays

March 11, 2021
Author(s)
Malcolm Durkin, Joseph S. Adams, Simon Bandler, James A. Chervenak, Ed Denison, William Doriese, Shannon Duff, Fred M. Finkbeiner, Joseph Fowler, Johnathon Gard, Gene C. Hilton, Ruslan Hummatov, Kent Irwin, Young I. Joe, Richard L. Kelley, Caroline A. Kilbourne, Antoine R. Miniussi, Kelsey Morgan, Galen O'Neil, Christine Pappas, Frederick S. Porter, Carl Reintsema, Kazuhiro Sakai, Stephen J. Smith, Robert W. Stevens, Daniel Swetz, Paul Szypryt, Joel Ullom, Leila Vale, Nicholas A. Wakeham
Time division multiplexing (TDM) is being developed as the readout technology of the X-ray integral field unit (X-IFU), a 3,168-pixel X-ray transition-edge sensor (TES) imaging spectrometer that is part of the European Space Agency's Athena satellite

Absolute energies and emission line shapes of the x-ray lines of lanthanide metals

February 1, 2021
Author(s)
Joseph Fowler, Galen O'Neil, Bradley K. Alpert, Douglas Bennett, Edward V. Denison, William Doriese, Gene Hilton, Lawrence T. Hudson, Young I. Joe, Kelsey Morgan, Daniel Schmidt, Daniel Swetz, Csilla I. Szabo-Foster, Joel Ullom
We use an array of transition-edge sensors, cryogenic microcalorimeters with 4 eV energy resolution, to measure the x-ray emission-line profiles of four elements of the lanthanide series: praseodymium, neodymium, terbium, and holmium. The spectrometer also

Broadband high-energy resolution hard x-ray spectroscopy using transition edge sensors at SPring-8

January 12, 2021
Author(s)
Shinya Yamada, Yuto Ichinohe, Hideyuki Tatsuno, Ryota Hayakawa, Hirotaka Suda, Takaya Ohashi, Yoshitaka Ishisaki, Tomoya Uruga, Oki Sekizawa, Kiyofumi Nitta, Yoshio Takahashi, Takaaki Itai, Hiroki Suga, Makoto Nagasawa, Masato Tanaka, Minako Kurisu, Tadashi Hashimoto, Douglas Bennett, Edward V. Denison, W.Bertrand (Randy) Doriese, Malcolm Durkin, Joseph Fowler, Galen O'Neil, Kelsey Morgan, Dan Schmidt, Daniel Swetz, Joel Ullom, Leila R. Vale, Shinji Okada, Takuma Okumura, Toshiyuki Azuma, Toru Tamagawa, Tadaaki Isobe, Satoshi Kohjiro, Hirofumi Noda, Keigo Tanaka, Akimichi Taguchi, Yuki Imai, Kosuke Sato, Tasuku Hayashi, Teruhiko Kashiwabara, Kohei Sakata
We have succeeded in operating a transition-edge sensor (TES) spectrometer and evaluating its performance at the SPring-8 synchrotron x-ray light source. The TES spectrometer consists of a 240 pixel National Institute of Standards and Technology (NIST) TES

Development of a transition-edge sensor bilayer process providing new modalities for critical temperature control

September 21, 2020
Author(s)
Joel Weber, Kelsey Morgan, Daikang Yan, Christine Pappas, Abigail Wessels, Galen O'Neil, Douglas Bennett, Gene C. Hilton, Daniel Swetz, Joel Ullom, Daniel Schmidt
Transition-edge sensors (TESs) are thermal detectors in which a superconducting film that is electrically biased in the superconducting-to-normal transition is used as a thermometer. In most TESs, the film is a superconductor-normal metal bilayer where the

Measurement of the 2P1/2-2P3/2 fine structure splitting in fluorine-like Kr, W, Re, Os and Ir

September 2, 2020
Author(s)
Galen O'Neil, Samuel C. Sanders, Paul Szypryt, Dipti Goyal, Amy Gall, Yang Yang, Samuel M. Brewer, William Doriese, Joseph Fowler, Daniel Swetz, Joseph Tan, Joel Ullom, Andrey V. Volotka, Endre Takacs, Yuri Ralchenko
Quantum electrodynamics (QED) is currently considered to be one of the most accurate theories of fundamental interactions. As its extraordinary precision offers unique scientific opportunities, e.g., search for new physics, stringent experimental tests of

A Predictive Control Algorithm for Time-Division-Multiplexed Readout of TES Microcalorimeters

January 28, 2020
Author(s)
Malcolm S. Durkin, Galen C. O'Neil, William B. Doriese, Johnathon D. Gard, Gene C. Hilton, Jozsef Imrek, Nathan J. Ortiz, Carl D. Reintsema, Robert W. Stevens, Daniel S. Swetz, Joel N. Ullom
Time division multiplexing (TDM) uses a digital flux-locked loop (DFLL) to linearize each first-stage SQUID amplifier. Presently, the dynamic range of our TDM systems is limited by the use of a proportional-integral controller to maintain the DFLL. In this

A transition-edge sensor-based x-ray spectrometer for the study of highly charged ions at the National Institute of Standards and Technology electron beam ion trap

December 16, 2019
Author(s)
Paul Szypryt, Galen C. O'Neil, Endre Takacs, Joseph N. Tan, Sean W. Buechele, Aung Naing, Douglas A. Bennett, William B. Doriese, Malcolm S. Durkin, Joseph W. Fowler, Johnathon D. Gard, Gene C. Hilton, Kelsey M. Morgan, Carl D. Reintsema, Daniel R. Schmidt, Daniel S. Swetz, Joel N. Ullom, Yuri Ralchenko
We report on the design, commissioning, and initial measurements of a Transition-Edge Sensor (TES) x-ray spectrometer for the Electron Beam Ion Trap (EBIT) at the National Institute of Standards and Technology (NIST). Over the past few decades, the NIST

On Low-Energy Tail Distortions in the Detector Response Function of X-Ray Microcalorimeter Spectrometers

November 21, 2019
Author(s)
Galen C. O'Neil, Paul Szypryt, Endre Takacs, Joseph N. Tan, Sean W. Buechele, Aung Naing, Young I. Joe, Daniel S. Swetz, Daniel R. Schmidt, William B. Doriese, Johnathon D. Gard, Carl D. Reintsema, Joel N. Ullom, John S. Villarrubia, Yuri Ralchenko
We use narrow spectral lines from the X-ray spectra of various highly charged ions to measure low-energy tail-like deviations from a Gaussian response function in a microcalorimeter X-ray spectrometer with Au absorbers at energies from 650 to 3320 eV. We

A Robust Principal Component Analysis for Outlier Identification in Messy Microcalorimeter Data

November 12, 2019
Author(s)
Joseph W. Fowler, Bradley K. Alpert, Young I. Joe, Galen C. O'Neil, Daniel S. Swetz, Joel N. Ullom
A principal component analysis (PCA) of clean microcalorimeter pulse records can be a first step beyond statistically optimal linear filtering of pulses toward a fully nonlinear analysis. For PCA to be practical on spectrometers with hundreds of sensors

Soft X-ray spectroscopy with transition-edge sensors at Stanford Synchrotron Radiation Lightsource beamline 10-1

November 5, 2019
Author(s)
Sang-Jun Lee, Charles Titus, Roberto A. Mori, Michael Baker, Douglas Bennett, Hsiao-Mei Cho, W.Bertrand (Randy) Doriese, Joseph Fowler, Kelly J. Gaffney, Allesandro Gallo, Johnathon Gard, Gene C. Hilton, Hoyoung Jang, Young I. Joe, Christopher Kenney, Jason Knight, Thomas Kroll, Jun-Sik Lee, Dale Li, Donhui Lu, Ronald Marks, Michael Minitti, Kelsey Morgan, Ogasawara Hirohito, Galen O'Neil, Carl D. Reintsema, Dan Schmidt, Dimosthenis Sokaras, Joel Ullom, Tsu-Chien Weng, Christopher Williams, Betty A. Young, Daniel Swetz, Kent D. Irwin, Dennis Nordlund
We present results obtained with a new soft X-ray spectrometer based on transition-edge sensors (TESs) composed of Mo/Cu bilayers coupled to bismuth absorbers. This spectrometer simultaneously provides excellent energy resolution, high detection efficiency

A TES X-ray Spectrometer for NSENSE

March 25, 2019
Author(s)
Christine G. Pappas, Malcolm S. Durkin, Joseph W. Fowler, Kelsey M. Morgan, Joel N. Ullom, William B. Doriese, Gene C. Hilton, Galen C. O'Neil, Daniel R. Schmidt, Paul Szypryt, Daniel S. Swetz
The Non-destructive Statistical Estimation of Nanoscale Structures and Electronics NSENSE instrument for IARPAs Rapid Analysis of Various Emerging Nanoelectronics RAVEN program is a tabletop X-ray tomography prototype designed for three-dimensional imaging

Demonstration of Athena X-IFU Compatible 40-Row Time-Division-Multiplexed Readout

March 19, 2019
Author(s)
Malcolm S. Durkin, Joseph S. Adams, Simon R. Bandler, James A. Chervenak, Saptarshi Chaudhuri, Carl S. Dawson, Edward V. Denison, William B. Doriese, Shannon M. Duff, F. M. Finkbeiner, C. T. FitzGerald, Joseph W. Fowler, Johnathon D. Gard, Gene C. Hilton, Kent D. Irwin, Young I. Joe, R. L. Kelley, Caroline A. Kilbourne, A. R. Miniussi, Kelsey M. Morgan, Galen C. O'Neil, Christine G. Pappas, F. S. Porter, Carl D. Reintsema, David A. Rudman, Kazuhiro Sakai, Stephen J. Smith, Robert W. Stevens, Daniel S. Swetz, Paul Szypryt, Joel N. Ullom, Leila R. Vale, N. Wakeham, Joel C. Weber, B. A. Young
Time-division multiplexing (TDM) is the backup readout technology for the X-ray Integral Field Unit (X-IFU), a 3168-pixel X-ray transition-edge sensor (TES) array that will provide imaging spectroscopy for european space agency's Athena satellite mission

Optimization of Time-and Code-Division-Multiplexed Readout for Athena X-IFU

March 18, 2019
Author(s)
William B. Doriese, Simon R. Bandler, Saptarshi Chaudhuri, Carl S. Dawson, Edward V. Denison, Shannon M. Duff, Malcolm S. Durkin, C. T. FitzGerald, Joseph W. Fowler, Johnathon D. Gard, Gene C. Hilton, Kent D. Irwin, Young I. Joe, Kelsey M. Morgan, Galen C. O'Neil, Christine G. Pappas, Carl D. Reintsema, David A. Rudman, Stephen J. Smith, Robert W. Stevens, Daniel S. Swetz, Paul Szypryt, Joel N. Ullom, Leila R. Vale, Joel C. Weber, B. A. Young
Readout of a large, spacecraft-based array of superconducting transition-edge sensors (TESs) requires careful management of the layout area and power dissipation of the cryogenic-circuit components. We present three optimizations of our time- (TDM) and

High-Throughput, DC-Parametric Evaluation of Flux-Activated-Switch-Based TDM and CDM SQUID Multiplexers

March 12, 2019
Author(s)
Carl D. Reintsema, Douglas A. Bennett, Edward V. Denison, Malcolm S. Durkin, William B. Doriese, Joseph W. Fowler, Johnathon D. Gard, Arpi L. Grigorian, Gene C. Hilton, Johannes Hubmayr, Galen C. O'Neil, John A. Mates, Kelsey M. Morgan, Daniel R. Schmidt, Robert W. Stevens, Daniel S. Swetz, Leila R. Vale, Joel N. Ullom, Kent D. Irwin, Saptarshi Chaudhuri, Charles J. Titus, Carl S. Dawson
The successful realization and broad deployment of transition edge sensor (TES)-based detector systems has led to significant demand for time-division and code-division superconducting quantum interference device (SQUID) multiplexers time division

A Highly Linear Calibration Metric for TES X-ray Microcalorimeters

August 2, 2018
Author(s)
Christine G. Pappas, Joseph W. Fowler, Douglas A. Bennett, William B. Doriese, Young I. Joe, Kelsey M. Morgan, Galen C. O'Neil, Joel N. Ullom, Daniel S. Swetz
Transition-edge sensor X-ray microcalorimeters are usually calibrated empirically, as the most widely-used calibration metric, optimal filtered pulse height (OFPH), in general has an unknown dependance on photon energy, E γ. Because the calibration

Approaches to the Optimal Nonlinear Analysis of Microcalorimeter Pulses

March 8, 2018
Author(s)
Joseph W. Fowler, Christine G. Pappas, Bradley K. Alpert, William B. Doriese, Galen C. O'Neil, Joel N. Ullom, Daniel S. Swetz
We consider how to analyze microcalorimeter pulses for quantities that are nonlinear in the data, while preserving the signal-to-noise advantages of linear optimal filtering. We apply the approach to compute the electrothermal feedback energy deficit (the

Near- and extended-edge x-ray-absorption fine-structure spectroscopy using ultrafast coherent high-order harmonic supercontinua

March 1, 2018
Author(s)
Dimitar Popmintchev, Benjamin Galloway, Ming-Chang Chen, Franklin Dolar, Christopher Mancuso, Amelia Hankla, Luis Miaja Avila, Galen O'Neil, Guangyu Fan, Skirmantas Alisauskas, Giedrius Andriukaitis, Tadas Balciunas, Oliver M?cke, Audrius Pugzlys, Andrius Baltuska, Henry C. Kapteyn, Tenio Popmintchev, Margaret M. Murnane
Phase matching of the high-order harmonic generation process now makes it possible to produce spatially and temporally coherent ultrafast X-ray beams, with bandwidths spanning more than 12 octaves, from the UV to the keV region. Here we report the first

L-Edge Spectroscopy of Dilute, Radiation-Sensitive Systems Using a Transition-Edge-Sensor Array

December 7, 2017
Author(s)
Daniel S. Swetz, William B. Doriese, Joseph W. Fowler, Johnathon D. Gard, Gene C. Hilton, Kelsey M. Morgan, Galen C. O'Neil, Joel N. Ullom
We present X-ray absorption spectroscopy and resonant inelastic X-ray scattering (RIXS) measurements on the iron L-edge of 0.5 mM aqueous ferricyanide. These measurements demonstrate the ability of high-throughput transition- edge-sensor (TES)

A Reassessment of Absolute Energies of X-ray L Lines of Lanthanide Metals

June 28, 2017
Author(s)
Bradley Alpert, W.Bertrand (Randy) Doriese, Gene C. Hilton, Lawrence T. Hudson, Young I. Joe, Kelsey Morgan, Carl D. Reintsema, Dan Schmidt, Daniel Swetz, Csilla Szabo-Foster, Joel Ullom, Joseph Fowler, Galen O'Neil, Douglas Bennett
We introduce a new technique for determining x-ray fluorescence line energies and widths, and we present measurements made with this technique of 22 x-ray L lines from lanthanide-series elements. The technique uses arrays of transition-edge sensors

A practical superconducting-microcalorimeter X-ray spectrometer for beamline and laboratory science

May 16, 2017
Author(s)
William B. Doriese, Peter Abbamonte, Douglas A. Bennett, Edward V. Denison, Yizhi Fang, Daniel A. Fischer, Colin P. Fitzgerald, Joseph W. Fowler, Johnathon D. Gard, Gene C. Hilton, Cherno Jaye, Jessica L. McChesney, Luis Miaja Avila, Kelsey M. Morgan, Young Il Joe, Galen C. O'Neil, Carl D. Reintsema, Fanny Rodolakis, Daniel R. Schmidt, Hideyuki Tatsuno, Jens Uhlig, Leila R. Vale, Joel N. Ullom, Daniel S. Swetz
We describe a series of microcalorimeter X-ray spectrometers designed for a broad suite of measurement applications. The chief advantage of this type of spectrometer is that it can be orders of magnitude more efficient at collecting X-rays than more

Ultrafast time-resolved x-ray absorption spectroscopy of ferrioxalate photolysis with a laser plasma x-ray source and microcalorimeter array

February 17, 2017
Author(s)
Galen C. O'Neil, Joel N. Ullom, Luis Miaja Avila, Young Il Joe, Joseph W. Fowler, Carl D. Reintsema, Daniel S. Swetz, Kevin L. Silverman, Daniel R. Schmidt, Bruce D. Ravel, Gene C. Hilton, William B. Doriese, Bradley K. Alpert, Ralph Jimenez
Using a table-top apparatus based upon a laser plasma x-ray source and an array of cryogenic microcalorimeter x-ray detectors, we have measured the transient x-ray absorption spectrum during the ferrioxalate photoreduction reaction. We observe the Fe K
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