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129 results on '"O'Neil, G. C."'

1. Few-electron highly charged muonic Ar atoms verified by electronic $K$ x rays

Author

Okumura, T., Azuma, T., Bennett, D. A., Doriese, W. B., Durkin, M. S., Fowler, J. W., Gard, J. D., Hashimoto, T., Hayakawa, R., Ichinohe, Y., Indelicato, P., Isobe, T., Kanda, S., Kato, D., Katsuragawa, M., Kawamura, N., Kino, Y., Kominato, N., Miyake, Y., Morgan, K. M., Noda, H., O'Neil, G. C., Okada, S., Okutsu, K., Paul, N., Reintsema, C. D., Sato, T., Schmidt, D. R., Shimomura, K., Strasser, P., Swetz, D. S., Takahashi, T., Takeda, S., Takeshita, S., Tampo, M., Tatsuno, H., Tőkési, K., Tong, X. M., Toyama, Y., Ullom, J. N., Watanabe, S., Yamada, S., and Yamashita, T.

Subjects
Physics - Atomic Physics
Abstract

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 accompanied by a few electrons, which have never been observed before. One-, two-, and three-electron bound, i.e., H-like, He-like, and Li-like, muonic Ar atoms were identified from electronic $K$ x rays and hyper-satellite $K$ x rays. These $K$ x rays are emitted after the charge transfer process by the collisions with surrounding Ar atoms. With the aid of theoretical calculations, we confirmed that the peak positions are consistent with the x-ray energies from highly charged Cl ions, and the intensities reflecting deexcitation dynamics were successfully understood by taking into account the interaction between the muon and bound electrons.

Published
2024

2. The potential of microcalorimeter x-ray spectrometers for measurement of relative fluorescence-line intensities

Author

Fowler, J. W., Miaja-Avila, L., O'Neil, G. C., Ullom, J. N., Whitelock, H., and Swetz, D. S.

Subjects
Physics - Instrumentation and Detectors, Physics - Atomic Physics
Abstract

We have previously used an array of cryogenic microcalorimeters with 4 eV energy resolution to measure emission-line profiles and energies of the characteristic L-shell x rays of four elements of the lanthanide series: praseodymium, neodymium, terbium, and holmium. We consider the power of the same data set for the estimation of the lines' relative intensities. Intensities must be corrected for detector efficiency and self-absorption, and we estimate uncertainties on the corrections. These data represent one of the first uses of cryogenic energy-dispersive sensors to estimate the relative intensities of x-ray fluorescence lines. They show that a future measurement of thin-film samples with microcalorimeter detectors could achieve systematic uncertainties below 1% on relative line intensities over a broad energy range., Comment: Submitted to Radiation Physics & Chemistry, special issue on x-ray fundamental parameters

Published
2022
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3. Energy calibration of nonlinear microcalorimeters with uncertainty estimates from Gaussian process regression

Author

Fowler, J. W., Alpert, B. K., O'Neil, G. C., Swetz, D. S., and Ullom, J. N.

Subjects
Physics - Instrumentation and Detectors, Physics - Data Analysis, Statistics and Probability
Abstract

The nonlinear energy response of cryogenic microcalorimeters is usually corrected through an empirical calibration. X-ray or gamma-ray emission lines of known shape and energy anchor a smooth function that generalizes the calibration data and converts detector measurements to energies. We argue that this function should be an approximating spline. The theory of Gaussian process regression makes a case for this functional form. It also provides an important benefit previously absent from our calibration method: a quantitative uncertainty estimate for the calibrated energies, with lower uncertainty near the best-constrained calibration points., Comment: Submitted to J. Low Temperature Physics for the Proceedings of the 19th International Workshop on Low-Temperature Detectors (2021)

Published
2022
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4. 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

Author

Szypryt, P., O'Neil, G. C., Takacs, E., Tan, J. N., Buechele, S. W., Naing, A. S., Bennett, D. A., Doriese, W. B., Durkin, M., Fowler, J. W., Gard, J. D., Hilton, G. C., Morgan, K. M., Reintsema, C. D., Schmidt, D. R., Swetz, D. S., Ullom, J. N., and Ralchenko, Yu.

Subjects
Physics - Instrumentation and Detectors, Physics - Atomic Physics
Abstract

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 EBIT has produced numerous studies of highly charged ions in diverse fields such as atomic physics, plasma spectroscopy, and laboratory astrophysics. The newly commissioned NIST EBIT TES Spectrometer (NETS) improves the measurement capabilities of the EBIT through a combination of high x-ray collection efficiency and resolving power. NETS utilizes 192 individual TES x-ray microcalorimeters (166/192 yield) to improve upon the collection area by a factor of ~30 over the 4-pixel neutron transmutation doped germanium-based microcalorimeter spectrometer previously used at the NIST EBIT. The NETS microcalorimeters are optimized for the x-ray energies from roughly 500 eV to 8,000 eV and achieve an energy resolution of 3.7 eV to 5.0 eV over this range, a more modest (<2X) improvement over the previous microcalorimeters. Beyond this energy range NETS can operate with various trade-offs, the most significant of which are reduced efficiency at lower energies and being limited to a subset of the pixels at higher energies. As an initial demonstration of the capabilities of NETS, we measured transitions in He-like and H-like O, Ne, and Ar as well as Ni-like W. We detail the energy calibration and data analysis techniques used to transform detector counts into x-ray spectra, a process that will be the basis for analyzing future data.

Published
2020
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5. On low-energy tail distortions in the detector responsefunction of x-ray microcalorimeter spectrometers

Author

O'Neil, G. C., Szypryt, P., Takacs, E., Tan, J. N., Buechele, S. W., Naing, A. S., Joe, Y. I., Swetz, D., Schmidt, D. R., Doriese, W. B., Gard, J. D., Reintsema, C. D., Ullom, J. N., Villarrubia, J. S., and Ralchenko, Yu.

Subjects
Physics - Instrumentation and Detectors, Condensed Matter - Other Condensed Matter
Abstract

We use narrow spectral lines from the x-ray spectra of various highlycharged ions to measure low-energy tail-like deviations from a Gaussian responsefunction in a microcalorimter x-ray spectrometer with Au absorbers at energiesfrom 650 eV to 3320 eV. We review the literature on low energy tails in othermicrocalorimter x-ray spectrometers and present a model that explains all thereviewed tail fraction measurements. In this model a low energy tail arises fromthe combination of electron escape and energy trapping associated with Bi x-rayabsorbers.

Published
2020
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6. A robust principal component analysis for outlier identification in messy microcalorimeter data

Author

Fowler, J. W., Alpert, B. K., Joe, Y. -I., O'Neil, G. C., Swetz, D. S., and Ullom, J. N.

Subjects
Physics - Data Analysis, Statistics and Probability, Physics - Instrumentation and Detectors
Abstract

A principal component analysis (PCA) of clean microcalorimeter pulse records can be a first step beyond statistically optimal linear filtering of pulses towards a fully non-linear analysis. For PCA to be practical on spectrometers with hundreds of sensors, an automated identification of clean pulses is required. Robust forms of PCA are the subject of active research in machine learning. We examine a version known as coherence pursuit that is simple, fast, and well matched to the automatic identification of outlier records, as needed for microcalorimeter pulse analysis., Comment: Accepted in J. Low Temperature Physics

Published
2019
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7. Mitigating the effects of charged particle strikes on TES arrays for exotic atom X-ray experiments

Author

Tatsuno, H., Bennett, D. A., Doriese, W. B., Durkin, M., Fowler, J. W., Gard, J. D., Hashimoto, T., Hayakawa, R., Hayashi, T., Hilton, G. C., Ichinohe, Y., Noda, H., O'Neil, G. C., Okada, S., Reintsema, C. D., Schmidt, D. R., Swetz, D. S., Ullom, J. N., and Yamada, S.

Subjects
Physics - Instrumentation and Detectors
Abstract

Exotic atom experiments place transition-edge-sensor (TES) microcalorimeter arrays in a high-energy charged particle rich environment. When a high-energy charged particle passes through the silicon substrate of a TES array, a large amount of energy is deposited and small pulses are generated across multiple pixels in the TES array due to thermal crosstalk. We have developed analysis techniques to assess and reduce the effects of charged particle events on exotic atom X-ray measurements. Using this technique, the high-energy and low-energy components of the X-ray peaks due to pileup are eliminated, improving the energy resolution from 6.6 eV to 5.7 eV at 6.9 keV., Comment: Proceedings of the LTD18 conference, accepted

Published
2019
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8. Optical Characterization of OMT-Coupled TES Bolometers for LiteBIRD

Author

Hubmayr, J., Ade, P. A. R., Adler, A., Allys, E., Alonso, D., Arnold, K., Auguste, D., Aumont, J., Aurlien, R., Austermann, J. E., Azzoni, S., Baccigalupi, C., Banday, A. J., Banerji, R., Barreiro, R. B., Bartolo, N., Basak, S., Battistelli, E., Bautista, L., Beall, J. A., Beck, D., Beckman, S., Benabed, K., Bermejo-Ballesteros, J., Bersanelli, M., Bonis, J., Borrill, J., Bouchet, F., Boulanger, F., Bounissou, S., Brilenkov, M., Brown, M. L., Bucher, M., Calabrese, E., Calvo, M., Campeti, P., Carones, A., Casas, F. J., Catalano, A., Challinor, A., Chan, V., Cheung, K., Chinone, Y., Chiocchetta, C., Clark, S. E., Clermont, L., Clesse, S., Cliche, J., Columbro, F., Connors, J. A., Coppolecchia, A., Coulton, W., Cubas, J., Cukierman, A., Curtis, D., Cuttaia, F., D’Alessandro, G., Dachlythra, K., de Bernardis, P., de Haan, T., de la Hoz, E., De Petris, M., Della Torre, S., Daz Garca, J. J., Dickinson, C., Diego-Palazuelos, P., Dobbs, M., Dotani, T., Douillet, D., Doumayrou, E., Duband, L., Ducout, A., Duff, S. M., Duval, J. M., Ebisawa, K., Elleflot, T., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Farrens, S., Finelli, F., Flauger, R., Fleury-Frenette, K., Franceschet, C., Fuskeland, U., Galli, L., Galli, S., Galloway, M., Ganga, K., Gao, J. R., Genova-Santos, R. T., Georges, M., Gerbino, M., Gervasi, M., Ghigna, T., Giardiello, S., Gjerlw, E., Gonzles, R. Gonzlez, Gradziel, M. L., Grain, J., Grandsire, L., Grupp, F., Gruppuso, A., Gudmundsson, J. E., Halverson, N. W., Hamilton, J., Hargrave, P., Hasebe, T., Hasegawa, M., Hattori, M., Hazumi, M., Henrot-Versill, S., Hensley, B., Herman, D., Herranz, D., Hilton, G. C., Hivon, E., Hlozek, R. A., Hoang, D., Hornsby, A. L., Hoshino, Y., Ichiki, K., Iida, T., Ikemoto, T., Imada, H., Ishimura, K., Ishino, H., Jaehnig, G., Jones, M., Kaga, T., Kashima, S., Katayama, N., Kato, A., Kawasaki, T., Keskitalo, R., Kintziger, C., Kisner, T., Kobayashi, Y., Kogiso, N., Kogut, A., Kohri, K., Komatsu, E., Komatsu, K., Konishi, K., Krachmalnicoff, N., Kreykenbohm, I., Kuo, C. L., Kushino, A., Lamagna, L., Lanen, J. V., Laquaniello, G., Lattanzi, M., Lee, A. T., Leloup, C., Levrier, F., Linder, E., Link, M. J., Lonappan, A. I., Louis, T., Luzzi, G., Macias-Perez, J., Maciaszek, T., Maffei, B., Maino, D., Maki, M., Mandelli, S., Maris, M., Marquet, B., Martnez-Gonzlez, E., Martire, F. A., Masi, S., Massa, M., Masuzawa, M., Matarrese, S., Matsuda, F. T., Matsumura, T., Mele, L., Mennella, A., Migliaccio, M., Minami, Y., Mitsuda, K., Moggi, A., Monelli, M., Monfardini, A., Montgomery, J., Montier, L., Morgante, G., Mot, B., Murata, Y., Murphy, J. A., Nagai, M., Nagano, Y., Nagasaki, T., Nagata, R., Nakamura, S., Nakano, R., Namikawa, T., Nati, F., Natoli, P., Nerval, S., Neto Godry Farias, N., Nishibori, T., Nishino, H., Noviello, F., O’Neil, G. C., O’Sullivan, C., Odagiri, K., Ochi, H., Ogawa, H., Ogawa, H., Oguri, S., Ohsaki, H., Ohta, I. S., Okada, N., Pagano, L., Paiella, A., Paoletti, D., Pascual Cisneros, G., Passerini, A., Patanchon, G., Pelgrim, V., Peloton, J., Pettorino, V., Piacentini, F., Piat, M., Piccirilli, G., Pinsard, F., Pisano, G., Plesseria, J., Polenta, G., Poletti, D., Prouv, T., Puglisi, G., Rambaud, D., Raum, C., Realini, S., Reinecke, M., Reintsema, C. D., Remazeilles, M., Ritacco, A., Rosier, P., Roudil, G., Rubino-Martin, J., Russell, M., Sakurai, H., Sakurai, Y., Sandri, M., Sasaki, M., Savini, G., Scott, D., Seibert, J., Sekimoto, Y., Sherwin, B., Shinozaki, K., Shiraishi, M., Shirron, P., Shitvov, A., Signorelli, G., Smecher, G., Spinella, F., Starck, J., Stever, S., Stompor, R., Sudiwala, R., Sugiyama, S., Sullivan, R., Suzuki, A., Suzuki, J., Suzuki, T., Svalheim, T. L., Switzer, E., Takaku, R., Takakura, H., Takakura, S., Takase, Y., Takeda, Y., Tartari, A., Tavagnacco, D., Taylor, A., Taylor, E., Terao, Y., Terenzi, L., Thermeau, J., Thommesen, H., Thompson, K. L., Thorne, B., Toda, T., Tomasi, M., Tominaga, M., Trappe, N., Tristram, M., Tsuji, M., Tsujimoto, M., Tucker, C., Ueki, R., Ullom, J. N., Umemori, K., Vacher, L., Van Lanen, J., Vermeulen, G., Vielva, P., Villa, F., Vissers, M. R., Vittorio, N., Wandelt, B., Wang, W., Wehus, I. K., Weller, J., Westbrook, B., Weymann-Despres, G., Wilms, J., Winter, B., Wollack, E. J., Yamasaki, N. Y., Yoshida, T., Yumoto, J., Watanuki, K., Zacchei, A., Zannoni, M., and Zonca, A.

Published
2022
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9. A Highly Linear Calibration Metric for TES X-ray Microcalorimeters

Author

Pappas, C. G., Fowler, J. W., Bennett, D. A., Doriese, W. B., Joe, Y. I., Morgan, K. M., O'Neil, G. C., Ullom, J. N., and Swetz, D. S.

Subjects
Physics - Instrumentation and Detectors
Abstract

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, $E_{\gamma}$. Because the calibration function can only be measured at specific points where photons of a known energy can be produced, this unknown dependence of OFPH on $E_{\gamma}$ leads to calibration errors and the need for time-intensive calibration measurements and analysis. A calibration metric that is nearly linear as a function of $E_{\gamma}$ could help alleviate these problems. In this work, we assess the linearity of a physically motivated calibration metric, $E_{Joule}$. We measure calibration pulses in the range 4.5 keV$<$$E_{\gamma}$$<$9.6 keV with detectors optimized for 6 keV photons to compare the linearity properties of $E_{Joule}$ to OFPH. In these test data sets, we find that $E_{Joule}$ fits a linear function an order of magnitude better than OFPH. Furthermore, calibration functions using $E_{J}$, an optimized version of $E_{Joule}$, are linear within the 2-3 eV noise of the data.

Published
2018
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10. Approaches to the Optimal Nonlinear Analysis of Microcalorimeter Pulses

Author

Fowler, J. W., Pappas, C. G., Alpert, B. K., Doriese, W. B., O'Neil, G. C., Ullom, J. N., and Swetz, D. S.

Subjects
Physics - Instrumentation and Detectors, Physics - Data Analysis, Statistics and Probability
Abstract

We consider how to analyze microcalorimeter pulses for quantities that are nonlinear in the data, while preserving the signal-to-noise advantages of lin- ear optimal filtering. We successfully apply our chosen approach to compute the electrothermal feedback energy deficit (the "Joule energy") of a pulse, which has been proposed as a linear estimator of the deposited photon energy., Comment: Accepted by Journal of Low Temperature Physics. Contribution to the proceedings of Low Temperature Detectors 17, (Kurume Japan, 2017)

Published
2018
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11. A Reassessment of Absolute Energies of the X-ray L Lines of Lanthanide Metals

Author

Fowler, J. W., Alpert, B. K., Bennett, D. A., Doriese, W. B., Gard, J. D., Hilton, G. C., Hudson, L. T., Joe, Y. -I., Morgan, K. M., O'Neil, G. C., Reintsema, C. D., Schmidt, D. R., Swetz, D. S., Szabo, C. I., and Ullom., J. N.

Subjects
Physics - Instrumentation and Detectors
Abstract

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, microcalorimeters with high energy-resolving power that simultaneously observe both calibrated x-ray standards and the x-ray emission lines under study. The uncertainty in absolute line energies is generally less than 0.4 eV in the energy range of 4.5 keV to 7.5 keV. Of the seventeen line energies of neodymium, samarium, and holmium, thirteen are found to be consistent with the available x-ray reference data measured after 1990; only two of the four lines for which reference data predate 1980, however, are consistent with our results. Five lines of terbium are measured with uncertainties that improve on those of existing data by factors of two or more. These results eliminate a significant discrepancy between measured and calculated x-ray line energies for the terbium Ll line (5.551 keV). The line widths are also measured, with uncertainties of 0.6 eV or less on the full-width at half-maximum in most cases. These measurements were made with an array of approximately one hundred superconducting x- ray microcalorimeters, each sensitive to an energy band from 1 keV to 8 keV. No energy-dispersive spectrometer has previously been used for absolute-energy estimation at this level of accuracy. Future spectrometers, with superior linearity and energy resolution, will allow us to improve on these results and expand the measurements to more elements and a wider range of line energies., Comment: This version is the one accepted for publication in Metrologia

Published
2017
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12. When 'Optimal Filtering' Isn't

Author

Fowler, J. W., Alpert, B. K., Doriese, W. B., Hays-Wehle, J., Joe, Y. -I., Morgan, K. M., O'Neil, G. C., Reintsema, C. D., Schmidt, D. R., Ullom, J. N., and Swetz, D. S.

Subjects
Physics - Data Analysis, Statistics and Probability, Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Instrumentation and Detectors
Abstract

The so-called "optimal filter" analysis of a microcalorimeter's x-ray pulses is statistically optimal only if all pulses have the same shape, regardless of energy. The shapes of pulses from a nonlinear detector can and do depend on the pulse energy, however. A pulse-fitting procedure that we call "tangent filtering" accounts for the energy dependence of the shape and should therefore achieve superior energy resolution. We take a geometric view of the pulse-fitting problem and give expressions to predict how much the energy resolution stands to benefit from such a procedure. We also demonstrate the method with a case study of K-line fluorescence from several 3d transition metals. The method improves the resolution from 4.9 eV to 4.2 eV at the Cu K$\alpha$ line (8.0keV)., Comment: Submitted to the Proceedings of the 2016 Applied Superconductivity Conference

Published
2016
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13. First application of superconducting transition-edge-sensor microcalorimeters to hadronic-atom x-ray spectroscopy

Author

Okada, S., Bennett, D. A., Curceanu, C., Doriese, W. B., Fowler, J. W., Gard, J., Gustafsson, F. P., Hashimoto, T., Hayano, R. S., Hirenzaki, S., Hays-Wehle, J. P., Hilton, G. C., Ikeno, N., Iliescu, M., Ishimoto, S., Itahashi, K., Iwasaki, M., Koike, T., Kuwabara, K., Ma, Y., Marton, J., Noda, H., O'Neil, G. C., Outa, H., Reintsema, C. D., Sato, M., Schmidt, D. R., Shi, H., Suzuki, K., Suzuki, T., Swetz, D. S., Tatsuno, H., Uhlig, J., Ullom, J. N., Widmann, E., Yamada, S., Yamagata-Sekihara, J., and Zmeskal, J.

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment, Nuclear Theory, Physics - Atomic Physics
Abstract

High-resolution pionic-atom x-ray spectroscopy was performed with an x-ray spectrometer based on a 240-pixel array of superconducting transition-edge-sensor (TES) microcalorimeters at the piM1 beam line of the Paul Scherrer Institute. X-rays emitted by pionic carbon via the 4f->3d transition and the parallel 4d->3p transition were observed with a full-width-at-half-maximum energy resolution of 6.8 eV at 6.4 keV. Measured x-ray energies are consistent with calculated electromagnetic values which considered the strong-interaction effect assessed via the Seki-Masutani potential for the 3p energy level, and favor the electronic population of two filled 1s electrons in the K-shell. Absolute energy calibration with an uncertainty of 0.1 eV was demonstrated under a high-rate hadron beam condition of 1.45 MHz. This is the first application of a TES spectrometer to hadronic-atom x-ray spectroscopy and is an important milestone towards next-generation high-resolution kaonic-atom x-ray spectroscopy., Comment: 11 pages, 3 figures, submitted to PTEP

Published
2016

14. Absolute Energy Calibration of X-ray TESs with 0.04 eV Uncertainty at 6.4 keV in a Hadron-Beam Environment

Author

Tatsuno, H., Doriese, W. B., Bennett, D. A., Curceanu, C., Fowler, J. W., Gard, J., Gustafsson, F. P., Hashimoto, T., Hayano, R. S., Hays-Wehle, J. P., Hilton, G. C., Iliescu, M., Ishimoto, S., Itahashi, K., Iwasaki, M., Kuwabara, K., Ma, Y., Marton, J., Noda, H., O'Neil, G. C., Okada, S., Outa, H., Reintsema, C. D., Sato, M., Schmidt, D. R., Shi, H., Suzuki, K., Suzuki, T., Uhlig, J., Ullom, J. N., Widmann, E., Yamada, S., Zmeskal, J., and Swetz, D. S.

Subjects
Physics - Instrumentation and Detectors
Abstract

A performance evaluation of superconducting transition-edge sensors (TESs) in the environment of a pion beam line at a particle accelerator is presented. Averaged across the 209 functioning sensors in the array, the achieved energy resolution is 5.2 eV FWHM at Co $K_{\alpha}$ (6.9 keV) when the pion beam is off and 7.3 eV at a beam rate of 1.45 MHz. Absolute energy uncertainty of $\pm$0.04 eV is demonstrated for Fe $K_{\alpha}$ (6.4 keV) with in-situ energy calibration obtained from other nearby known x-ray lines. To achieve this small uncertainty, it is essential to consider the non-Gaussian energy response of the TESs and thermal cross-talk pile-up effects due to charged-particle hits in the silicon substrate of the TES array., Comment: Accepted for publication in J. Low Temperature Physics, special issue for the proceedings of the Low Temperature Detectors 16 conference

Published
2016
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15. The Practice of Pulse Processing

Author

Fowler, J. W., Alpert, B. K., Doriese, W. B., Joe, Y. -I., O'Neil, G. C., Ullom, J. N., and Swetz, D. S.

Subjects
Physics - Instrumentation and Detectors
Abstract

The analysis of data from x-ray microcalorimeters requires great care; their excellent intrinsic energy resolution cannot usually be achieved in practice without a statistically near-optimal pulse analysis and corrections for important systematic errors. We describe the essential parts of a pulse-analysis pipeline for data from x-ray microcalorimeters, including steps taken to reduce systematic gain variation and the unwelcome dependence of filtered pulse heights on the exact pulse-arrival time. We find these steps collectively to be essential tools for getting the best results from a microcalorimeter-based x-ray spectrometer., Comment: Accepted for publication in J. Low Temperature Physics, special issue for the proceedings of the Low Temperature Detectors 16 conference

Published
2015
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16. Microcalorimeter Spectroscopy at High Pulse Rates: a Multi-Pulse Fitting Technique

Author

Fowler, J. W., Alpert, B. K., Doriese, W. B., Fischer, D. A., Jaye, C., Joe, Y. I., O'Neil, G. C., Swetz, D. S., and Ullom, J. N.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

Transition edge sensor microcalorimeters can measure x-ray and gamma-ray energies with very high energy resolution and high photon-collection efficiency. For this technology to reach its full potential in future x-ray observatories, each sensor must be able to measure hundreds or even thousands of photon energies per second. Current "optimal filtering" approaches to achieve the best possible energy resolution work only for photons well isolated in time, a requirement in direct conflict with the need for high-rate measurements. We describe a new analysis procedure to allow fitting for the pulse height of all photons even in the presence of heavy pulse pile-up. In the limit of isolated pulses, the technique reduces to the standard optimal filtering with long records. We employ reasonable approximations to the noise covariance function in order to render multi-pulse fitting computationally viable even for very long data records. The technique is employed to analyze x-ray emission spectra at 600 eV and 6 keV at rates up to 250 counts per second in microcalorimeters having exponential signal decay times of approximately 1.2 ms., Comment: This version exactly matches the submission to journal

Published
2015
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17. Hyperspectral X-ray Imaging with TES Detectors for Nanoscale Chemical Speciation Mapping

Author

Carpenter, M. H., Croce, M. P., Baker, Z. K., Batista, E. R., Caffrey, M. P., Fontes, C. J., Koehler, K. E., Kossmann, S. E., McIntosh, K. G., Rabin, M. W., Renck, B. W., Wagner, G. L., Wilkerson, M. P., Yang, P., Yoho, M. D., Ullom, J. N., Bennett, D. A., O’Neil, G. C., Reintsema, C. D., Schmidt, D. R., Hilton, G. C., Swetz, D. S., Becker, D. T., Gard, J. D., Imrek, J., Mates, J. A. B., Morgan, K. M., Yan, D., Wessels, A. L., Cantor, R. H., Hall, J. A., and Carver, D. T.

Published
2020
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18. X-ray Spectroscopy of Muonic Atoms Isolated in Vacuum with Transition Edge Sensors

Author

Okada, S., Azuma, T., Bennett, D. A., Caradonna, P., Doriese, W. B., Durkin, M. S., Fowler, J. W., Gard, J. D., Hashimoto, T., Hayakawa, R., Hilton, G. C., Ichinohe, Y., Indelicato, P., Isobe, T., Kanda, S., Katsuragawa, M., Kawamura, N., Kino, Y., Miyake, Y., Morgan, K. M., Ninomiya, K., Noda, H., O’Neil, G. C., Okumura, T., Reintsema, C. D., Schmidt, D. R., Shimomura, K., Strasser, P., Swetz, D. S., Takahashi, T., Takeda, S., Takeshita, S., Tatsuno, H., Ueno, Y., Ullom, J. N., Watanabe, S., and Yamada, S.

Published
2020
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21. Proof-of-Principle Experiment for Testing Strong-Field Quantum Electrodynamics with Exotic Atoms: High Precision X-Ray Spectroscopy of Muonic Neon

Author

Okumura, T., primary, Azuma, T., additional, Bennett, D. A., additional, Chiu, I., additional, Doriese, W. B., additional, Durkin, M. S., additional, Fowler, J. W., additional, Gard, J. D., additional, Hashimoto, T., additional, Hayakawa, R., additional, Hilton, G. C., additional, Ichinohe, Y., additional, Indelicato, P., additional, Isobe, T., additional, Kanda, S., additional, Katsuragawa, M., additional, Kawamura, N., additional, Kino, Y., additional, Mine, K., additional, Miyake, Y., additional, Morgan, K. M., additional, Ninomiya, K., additional, Noda, H., additional, O’Neil, G. C., additional, Okada, S., additional, Okutsu, K., additional, Paul, N., additional, Reintsema, C. D., additional, Schmidt, D. R., additional, Shimomura, K., additional, Strasser, P., additional, Suda, H., additional, Swetz, D. S., additional, Takahashi, T., additional, Takeda, S., additional, Takeshita, S., additional, Tampo, M., additional, Tatsuno, H., additional, Ueno, Y., additional, Ullom, J. N., additional, Watanabe, S., additional, and Yamada, S., additional

Published
2023
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25. Optical Characterization of OMT-Coupled TES Bolometers for LiteBIRD

Author

Hubmayr, J, Ade, P, Adler, A, Allys, E, Alonso, D, Arnold, K, Auguste, D, Aumont, J, Aurlien, R, Austermann, J, Azzoni, S, Baccigalupi, C, Banday, A, Banerji, R, Barreiro, R, Bartolo, N, Basak, S, Battistelli, E, Bautista, L, Beall, J, Beck, D, Beckman, S, Benabed, K, Bermejo-Ballesteros, J, Bersanelli, M, Bonis, J, Borrill, J, Bouchet, F, Boulanger, F, Bounissou, S, Brilenkov, M, Brown, M, Bucher, M, Calabrese, E, Calvo, M, Campeti, P, Carones, A, Casas, F, Catalano, A, Challinor, A, Chan, V, Cheung, K, Chinone, Y, Chiocchetta, C, Clark, S, Clermont, L, Clesse, S, Cliche, J, Columbro, F, Connors, J, Coppolecchia, A, Coulton, W, Cubas, J, Cukierman, A, Curtis, D, Cuttaia, F, D’Alessandro, G, Dachlythra, K, de Bernardis, P, de Haan, T, de la Hoz, E, De Petris, M, Della Torre, S, Daz Garca, J, Dickinson, C, Diego-Palazuelos, P, Dobbs, M, Dotani, T, Douillet, D, Doumayrou, E, Duband, L, Ducout, A, Duff, S, Duval, J, Ebisawa, K, Elleflot, T, Eriksen, H, Errard, J, Essinger-Hileman, T, Farrens, S, Finelli, F, Flauger, R, Fleury-Frenette, K, Franceschet, C, Fuskeland, U, Galli, L, Galli, S, Galloway, M, Ganga, K, Gao, J, Genova-Santos, R, Georges, M, Gerbino, M, Gervasi, M, Ghigna, T, Giardiello, S, Gjerlw, E, Gonzles, R, Gradziel, M, Grain, J, Grandsire, L, Grupp, F, Gruppuso, A, Gudmundsson, J, Halverson, N, Hamilton, J, Hargrave, P, Hasebe, T, Hasegawa, M, Hattori, M, Hazumi, M, Henrot-Versill, S, Hensley, B, Herman, D, Herranz, D, Hilton, G, Hivon, E, Hlozek, R, Hoang, D, Hornsby, A, Hoshino, Y, Ichiki, K, Iida, T, Ikemoto, T, Imada, H, Ishimura, K, Ishino, H, Jaehnig, G, Jones, M, Kaga, T, Kashima, S, Katayama, N, Kato, A, Kawasaki, T, Keskitalo, R, Kintziger, C, Kisner, T, Kobayashi, Y, Kogiso, N, Kogut, A, Kohri, K, Komatsu, E, Komatsu, K, Konishi, K, Krachmalnicoff, N, Kreykenbohm, I, Kuo, C, Kushino, A, Lamagna, L, Lanen, J, Laquaniello, G, Lattanzi, M, Lee, A, Leloup, C, Levrier, F, Linder, E, Link, M, Lonappan, A, Louis, T, Luzzi, G, Macias-Perez, J, Maciaszek, T, Maffei, B, Maino, D, Maki, M, Mandelli, S, Maris, M, Marquet, B, Martnez-Gonzlez, E, Martire, F, Masi, S, Massa, M, Masuzawa, M, Matarrese, S, Matsuda, F, Matsumura, T, Mele, L, Mennella, A, Migliaccio, M, Minami, Y, Mitsuda, K, Moggi, A, Monelli, M, Monfardini, A, Montgomery, J, Montier, L, Morgante, G, Mot, B, Murata, Y, Murphy, J, Nagai, M, Nagano, Y, Nagasaki, T, Nagata, R, Nakamura, S, Nakano, R, Namikawa, T, Nati, F, Natoli, P, Nerval, S, Neto Godry Farias, N, Nishibori, T, Nishino, H, Noviello, F, O’Neil, G, O’Sullivan, C, Odagiri, K, Ochi, H, Ogawa, H, Oguri, S, Ohsaki, H, Ohta, I, Okada, N, Pagano, L, Paiella, A, Paoletti, D, Pascual Cisneros, G, Passerini, A, Patanchon, G, Pelgrim, V, Peloton, J, Pettorino, V, Piacentini, F, Piat, M, Piccirilli, G, Pinsard, F, Pisano, G, Plesseria, J, Polenta, G, Poletti, D, Prouv, T, Puglisi, G, Rambaud, D, Raum, C, Realini, S, Reinecke, M, Reintsema, C, Remazeilles, M, Ritacco, A, Rosier, P, Roudil, G, Rubino-Martin, J, Russell, M, Sakurai, H, Sakurai, Y, Sandri, M, Sasaki, M, Savini, G, Scott, D, Seibert, J, Sekimoto, Y, Sherwin, B, Shinozaki, K, Shiraishi, M, Shirron, P, Shitvov, A, Signorelli, G, Smecher, G, Spinella, F, Starck, J, Stever, S, Stompor, R, Sudiwala, R, Sugiyama, S, Sullivan, R, Suzuki, A, Suzuki, J, Suzuki, T, Svalheim, T, Switzer, E, Takaku, R, Takakura, H, Takakura, S, Takase, Y, Takeda, Y, Tartari, A, Tavagnacco, D, Taylor, A, Taylor, E, Terao, Y, Terenzi, L, Thermeau, J, Thommesen, H, Thompson, K, Thorne, B, Toda, T, Tomasi, M, Tominaga, M, Trappe, N, Tristram, M, Tsuji, M, Tsujimoto, M, Tucker, C, Ueki, R, Ullom, J, Umemori, K, Vacher, L, Van Lanen, J, Vermeulen, G, Vielva, P, Villa, F, Vissers, M, Vittorio, N, Wandelt, B, Wang, W, Wehus, I, Weller, J, Westbrook, B, Weymann-Despres, G, Wilms, J, Winter, B, Wollack, E, Yamasaki, N, Yoshida, T, Yumoto, J, Watanuki, K, Zacchei, A, Zannoni, M, Zonca, A, Hubmayr, J., Ade, P. A. R., Adler, A., Allys, E., Alonso, D., Arnold, K., Auguste, D., Aumont, J., Aurlien, R., Austermann, J. E., Azzoni, S., Baccigalupi, C., Banday, A. J., Banerji, R., Barreiro, R. B., Bartolo, N., Basak, S., Battistelli, E., Bautista, L., Beall, J. A., Beck, D., Beckman, S., Benabed, K., Bermejo-Ballesteros, J., Bersanelli, M., Bonis, J., Borrill, J., Bouchet, F., Boulanger, F., Bounissou, S., Brilenkov, M., Brown, M. L., Bucher, M., Calabrese, E., Calvo, M., Campeti, P., Carones, A., Casas, F. J., Catalano, A., Challinor, A., Chan, V., Cheung, K., Chinone, Y., Chiocchetta, C., Clark, S. E., Clermont, L., Clesse, S., Cliche, J., Columbro, F., Connors, J. A., Coppolecchia, A., Coulton, W., Cubas, J., Cukierman, A., Curtis, D., Cuttaia, F., D’Alessandro, G., Dachlythra, K., de Bernardis, P., de Haan, T., de la Hoz, E., De Petris, M., Della Torre, S., Daz Garca, J. J., Dickinson, C., Diego-Palazuelos, P., Dobbs, M., Dotani, T., Douillet, D., Doumayrou, E., Duband, L., Ducout, A., Duff, S. M., Duval, J. M., Ebisawa, K., Elleflot, T., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Farrens, S., Finelli, F., Flauger, R., Fleury-Frenette, K., Franceschet, C., Fuskeland, U., Galli, L., Galli, S., Galloway, M., Ganga, K., Gao, J. R., Genova-Santos, R. T., Georges, M., Gerbino, M., Gervasi, M., Ghigna, T., Giardiello, S., Gjerlw, E., Gonzles, R. Gonzlez, Gradziel, M. L., Grain, J., Grandsire, L., Grupp, F., Gruppuso, A., Gudmundsson, J. E., Halverson, N. W., Hamilton, J., Hargrave, P., Hasebe, T., Hasegawa, M., Hattori, M., Hazumi, M., Henrot-Versill, S., Hensley, B., Herman, D., Herranz, D., Hilton, G. C., Hivon, E., Hlozek, R. A., Hoang, D., Hornsby, A. L., Hoshino, Y., Ichiki, K., Iida, T., Ikemoto, T., Imada, H., Ishimura, K., Ishino, H., Jaehnig, G., Jones, M., Kaga, T., Kashima, S., Katayama, N., Kato, A., Kawasaki, T., Keskitalo, R., Kintziger, C., Kisner, T., Kobayashi, Y., Kogiso, N., Kogut, A., Kohri, K., Komatsu, E., Komatsu, K., Konishi, K., Krachmalnicoff, N., Kreykenbohm, I., Kuo, C. L., Kushino, A., Lamagna, L., Lanen, J. V., Laquaniello, G., Lattanzi, M., Lee, A. T., Leloup, C., Levrier, F., Linder, E., Link, M. J., Lonappan, A. I., Louis, T., Luzzi, G., Macias-Perez, J., Maciaszek, T., Maffei, B., Maino, D., Maki, M., Mandelli, S., Maris, M., Marquet, B., Martnez-Gonzlez, E., Martire, F. A., Masi, S., Massa, M., Masuzawa, M., Matarrese, S., Matsuda, F. T., Matsumura, T., Mele, L., Mennella, A., Migliaccio, M., Minami, Y., Mitsuda, K., Moggi, A., Monelli, M., Monfardini, A., Montgomery, J., Montier, L., Morgante, G., Mot, B., Murata, Y., Murphy, J. A., Nagai, M., Nagano, Y., Nagasaki, T., Nagata, R., Nakamura, S., Nakano, R., Namikawa, T., Nati, F., Natoli, P., Nerval, S., Neto Godry Farias, N., Nishibori, T., Nishino, H., Noviello, F., O’Neil, G. C., O’Sullivan, C., Odagiri, K., Ochi, H., Ogawa, H., Oguri, S., Ohsaki, H., Ohta, I. S., Okada, N., Pagano, L., Paiella, A., Paoletti, D., Pascual Cisneros, G., Passerini, A., Patanchon, G., Pelgrim, V., Peloton, J., Pettorino, V., Piacentini, F., Piat, M., Piccirilli, G., Pinsard, F., Pisano, G., Plesseria, J., Polenta, G., Poletti, D., Prouv, T., Puglisi, G., Rambaud, D., Raum, C., Realini, S., Reinecke, M., Reintsema, C. D., Remazeilles, M., Ritacco, A., Rosier, P., Roudil, G., Rubino-Martin, J., Russell, M., Sakurai, H., Sakurai, Y., Sandri, M., Sasaki, M., Savini, G., Scott, D., Seibert, J., Sekimoto, Y., Sherwin, B., Shinozaki, K., Shiraishi, M., Shirron, P., Shitvov, A., Signorelli, G., Smecher, G., Spinella, F., Starck, J., Stever, S., Stompor, R., Sudiwala, R., Sugiyama, S., Sullivan, R., Suzuki, A., Suzuki, J., Suzuki, T., Svalheim, T. L., Switzer, E., Takaku, R., Takakura, H., Takakura, S., Takase, Y., Takeda, Y., Tartari, A., Tavagnacco, D., Taylor, A., Taylor, E., Terao, Y., Terenzi, L., Thermeau, J., Thommesen, H., Thompson, K. L., Thorne, B., Toda, T., Tomasi, M., Tominaga, M., Trappe, N., Tristram, M., Tsuji, M., Tsujimoto, M., Tucker, C., Ueki, R., Ullom, J. N., Umemori, K., Vacher, L., Van Lanen, J., Vermeulen, G., Vielva, P., Villa, F., Vissers, M. R., Vittorio, N., Wandelt, B., Wang, W., Wehus, I. K., Weller, J., Westbrook, B., Weymann-Despres, G., Wilms, J., Winter, B., Wollack, E. J., Yamasaki, N. Y., Yoshida, T., Yumoto, J., Watanuki, K., Zacchei, A., Zannoni, M., Zonca, A., Hubmayr, J, Ade, P, Adler, A, Allys, E, Alonso, D, Arnold, K, Auguste, D, Aumont, J, Aurlien, R, Austermann, J, Azzoni, S, Baccigalupi, C, Banday, A, Banerji, R, Barreiro, R, Bartolo, N, Basak, S, Battistelli, E, Bautista, L, Beall, J, Beck, D, Beckman, S, Benabed, K, Bermejo-Ballesteros, J, Bersanelli, M, Bonis, J, Borrill, J, Bouchet, F, Boulanger, F, Bounissou, S, Brilenkov, M, Brown, M, Bucher, M, Calabrese, E, Calvo, M, Campeti, P, Carones, A, Casas, F, Catalano, A, Challinor, A, Chan, V, Cheung, K, Chinone, Y, Chiocchetta, C, Clark, S, Clermont, L, Clesse, S, Cliche, J, Columbro, F, Connors, J, Coppolecchia, A, Coulton, W, Cubas, J, Cukierman, A, Curtis, D, Cuttaia, F, D’Alessandro, G, Dachlythra, K, de Bernardis, P, de Haan, T, de la Hoz, E, De Petris, M, Della Torre, S, Daz Garca, J, Dickinson, C, Diego-Palazuelos, P, Dobbs, M, Dotani, T, Douillet, D, Doumayrou, E, Duband, L, Ducout, A, Duff, S, Duval, J, Ebisawa, K, Elleflot, T, Eriksen, H, Errard, J, Essinger-Hileman, T, Farrens, S, Finelli, F, Flauger, R, Fleury-Frenette, K, Franceschet, C, Fuskeland, U, Galli, L, Galli, S, Galloway, M, Ganga, K, Gao, J, Genova-Santos, R, Georges, M, Gerbino, M, Gervasi, M, Ghigna, T, Giardiello, S, Gjerlw, E, Gonzles, R, Gradziel, M, Grain, J, Grandsire, L, Grupp, F, Gruppuso, A, Gudmundsson, J, Halverson, N, Hamilton, J, Hargrave, P, Hasebe, T, Hasegawa, M, Hattori, M, Hazumi, M, Henrot-Versill, S, Hensley, B, Herman, D, Herranz, D, Hilton, G, Hivon, E, Hlozek, R, Hoang, D, Hornsby, A, Hoshino, Y, Ichiki, K, Iida, T, Ikemoto, T, Imada, H, Ishimura, K, Ishino, H, Jaehnig, G, Jones, M, Kaga, T, Kashima, S, Katayama, N, Kato, A, Kawasaki, T, Keskitalo, R, Kintziger, C, Kisner, T, Kobayashi, Y, Kogiso, N, Kogut, A, Kohri, K, Komatsu, E, Komatsu, K, Konishi, K, Krachmalnicoff, N, Kreykenbohm, I, Kuo, C, Kushino, A, Lamagna, L, Lanen, J, Laquaniello, G, Lattanzi, M, Lee, A, Leloup, C, Levrier, F, Linder, E, Link, M, Lonappan, A, Louis, T, Luzzi, G, Macias-Perez, J, Maciaszek, T, Maffei, B, Maino, D, Maki, M, Mandelli, S, Maris, M, Marquet, B, Martnez-Gonzlez, E, Martire, F, Masi, S, Massa, M, Masuzawa, M, Matarrese, S, Matsuda, F, Matsumura, T, Mele, L, Mennella, A, Migliaccio, M, Minami, Y, Mitsuda, K, Moggi, A, Monelli, M, Monfardini, A, Montgomery, J, Montier, L, Morgante, G, Mot, B, Murata, Y, Murphy, J, Nagai, M, Nagano, Y, Nagasaki, T, Nagata, R, Nakamura, S, Nakano, R, Namikawa, T, Nati, F, Natoli, P, Nerval, S, Neto Godry Farias, N, Nishibori, T, Nishino, H, Noviello, F, O’Neil, G, O’Sullivan, C, Odagiri, K, Ochi, H, Ogawa, H, Oguri, S, Ohsaki, H, Ohta, I, Okada, N, Pagano, L, Paiella, A, Paoletti, D, Pascual Cisneros, G, Passerini, A, Patanchon, G, Pelgrim, V, Peloton, J, Pettorino, V, Piacentini, F, Piat, M, Piccirilli, G, Pinsard, F, Pisano, G, Plesseria, J, Polenta, G, Poletti, D, Prouv, T, Puglisi, G, Rambaud, D, Raum, C, Realini, S, Reinecke, M, Reintsema, C, Remazeilles, M, Ritacco, A, Rosier, P, Roudil, G, Rubino-Martin, J, Russell, M, Sakurai, H, Sakurai, Y, Sandri, M, Sasaki, M, Savini, G, Scott, D, Seibert, J, Sekimoto, Y, Sherwin, B, Shinozaki, K, Shiraishi, M, Shirron, P, Shitvov, A, Signorelli, G, Smecher, G, Spinella, F, Starck, J, Stever, S, Stompor, R, Sudiwala, R, Sugiyama, S, Sullivan, R, Suzuki, A, Suzuki, J, Suzuki, T, Svalheim, T, Switzer, E, Takaku, R, Takakura, H, Takakura, S, Takase, Y, Takeda, Y, Tartari, A, Tavagnacco, D, Taylor, A, Taylor, E, Terao, Y, Terenzi, L, Thermeau, J, Thommesen, H, Thompson, K, Thorne, B, Toda, T, Tomasi, M, Tominaga, M, Trappe, N, Tristram, M, Tsuji, M, Tsujimoto, M, Tucker, C, Ueki, R, Ullom, J, Umemori, K, Vacher, L, Van Lanen, J, Vermeulen, G, Vielva, P, Villa, F, Vissers, M, Vittorio, N, Wandelt, B, Wang, W, Wehus, I, Weller, J, Westbrook, B, Weymann-Despres, G, Wilms, J, Winter, B, Wollack, E, Yamasaki, N, Yoshida, T, Yumoto, J, Watanuki, K, Zacchei, A, Zannoni, M, Zonca, A, Hubmayr, J., Ade, P. A. R., Adler, A., Allys, E., Alonso, D., Arnold, K., Auguste, D., Aumont, J., Aurlien, R., Austermann, J. E., Azzoni, S., Baccigalupi, C., Banday, A. J., Banerji, R., Barreiro, R. B., Bartolo, N., Basak, S., Battistelli, E., Bautista, L., Beall, J. A., Beck, D., Beckman, S., Benabed, K., Bermejo-Ballesteros, J., Bersanelli, M., Bonis, J., Borrill, J., Bouchet, F., Boulanger, F., Bounissou, S., Brilenkov, M., Brown, M. L., Bucher, M., Calabrese, E., Calvo, M., Campeti, P., Carones, A., Casas, F. J., Catalano, A., Challinor, A., Chan, V., Cheung, K., Chinone, Y., Chiocchetta, C., Clark, S. E., Clermont, L., Clesse, S., Cliche, J., Columbro, F., Connors, J. A., Coppolecchia, A., Coulton, W., Cubas, J., Cukierman, A., Curtis, D., Cuttaia, F., D’Alessandro, G., Dachlythra, K., de Bernardis, P., de Haan, T., de la Hoz, E., De Petris, M., Della Torre, S., Daz Garca, J. J., Dickinson, C., Diego-Palazuelos, P., Dobbs, M., Dotani, T., Douillet, D., Doumayrou, E., Duband, L., Ducout, A., Duff, S. M., Duval, J. M., Ebisawa, K., Elleflot, T., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Farrens, S., Finelli, F., Flauger, R., Fleury-Frenette, K., Franceschet, C., Fuskeland, U., Galli, L., Galli, S., Galloway, M., Ganga, K., Gao, J. R., Genova-Santos, R. T., Georges, M., Gerbino, M., Gervasi, M., Ghigna, T., Giardiello, S., Gjerlw, E., Gonzles, R. Gonzlez, Gradziel, M. L., Grain, J., Grandsire, L., Grupp, F., Gruppuso, A., Gudmundsson, J. E., Halverson, N. W., Hamilton, J., Hargrave, P., Hasebe, T., Hasegawa, M., Hattori, M., Hazumi, M., Henrot-Versill, S., Hensley, B., Herman, D., Herranz, D., Hilton, G. C., Hivon, E., Hlozek, R. A., Hoang, D., Hornsby, A. L., Hoshino, Y., Ichiki, K., Iida, T., Ikemoto, T., Imada, H., Ishimura, K., Ishino, H., Jaehnig, G., Jones, M., Kaga, T., Kashima, S., Katayama, N., Kato, A., Kawasaki, T., Keskitalo, R., Kintziger, C., Kisner, T., Kobayashi, Y., Kogiso, N., Kogut, A., Kohri, K., Komatsu, E., Komatsu, K., Konishi, K., Krachmalnicoff, N., Kreykenbohm, I., Kuo, C. L., Kushino, A., Lamagna, L., Lanen, J. V., Laquaniello, G., Lattanzi, M., Lee, A. T., Leloup, C., Levrier, F., Linder, E., Link, M. J., Lonappan, A. I., Louis, T., Luzzi, G., Macias-Perez, J., Maciaszek, T., Maffei, B., Maino, D., Maki, M., Mandelli, S., Maris, M., Marquet, B., Martnez-Gonzlez, E., Martire, F. A., Masi, S., Massa, M., Masuzawa, M., Matarrese, S., Matsuda, F. T., Matsumura, T., Mele, L., Mennella, A., Migliaccio, M., Minami, Y., Mitsuda, K., Moggi, A., Monelli, M., Monfardini, A., Montgomery, J., Montier, L., Morgante, G., Mot, B., Murata, Y., Murphy, J. A., Nagai, M., Nagano, Y., Nagasaki, T., Nagata, R., Nakamura, S., Nakano, R., Namikawa, T., Nati, F., Natoli, P., Nerval, S., Neto Godry Farias, N., Nishibori, T., Nishino, H., Noviello, F., O’Neil, G. C., O’Sullivan, C., Odagiri, K., Ochi, H., Ogawa, H., Oguri, S., Ohsaki, H., Ohta, I. S., Okada, N., Pagano, L., Paiella, A., Paoletti, D., Pascual Cisneros, G., Passerini, A., Patanchon, G., Pelgrim, V., Peloton, J., Pettorino, V., Piacentini, F., Piat, M., Piccirilli, G., Pinsard, F., Pisano, G., Plesseria, J., Polenta, G., Poletti, D., Prouv, T., Puglisi, G., Rambaud, D., Raum, C., Realini, S., Reinecke, M., Reintsema, C. D., Remazeilles, M., Ritacco, A., Rosier, P., Roudil, G., Rubino-Martin, J., Russell, M., Sakurai, H., Sakurai, Y., Sandri, M., Sasaki, M., Savini, G., Scott, D., Seibert, J., Sekimoto, Y., Sherwin, B., Shinozaki, K., Shiraishi, M., Shirron, P., Shitvov, A., Signorelli, G., Smecher, G., Spinella, F., Starck, J., Stever, S., Stompor, R., Sudiwala, R., Sugiyama, S., Sullivan, R., Suzuki, A., Suzuki, J., Suzuki, T., Svalheim, T. L., Switzer, E., Takaku, R., Takakura, H., Takakura, S., Takase, Y., Takeda, Y., Tartari, A., Tavagnacco, D., Taylor, A., Taylor, E., Terao, Y., Terenzi, L., Thermeau, J., Thommesen, H., Thompson, K. L., Thorne, B., Toda, T., Tomasi, M., Tominaga, M., Trappe, N., Tristram, M., Tsuji, M., Tsujimoto, M., Tucker, C., Ueki, R., Ullom, J. N., Umemori, K., Vacher, L., Van Lanen, J., Vermeulen, G., Vielva, P., Villa, F., Vissers, M. R., Vittorio, N., Wandelt, B., Wang, W., Wehus, I. K., Weller, J., Westbrook, B., Weymann-Despres, G., Wilms, J., Winter, B., Wollack, E. J., Yamasaki, N. Y., Yoshida, T., Yumoto, J., Watanuki, K., Zacchei, A., Zannoni, M., and Zonca, A.

Abstract

Feedhorn- and orthomode transducer- (OMT) coupled transition edge sensor (TES) bolometers have been designed and micro-fabricated to meet the optical specifications of the LiteBIRD high frequency telescope (HFT) focal plane. We discuss the design and optical characterization of two LiteBIRD HFT detector types: dual-polarization, dual-frequency-band pixels with 195/280 GHz and 235/337 GHz band centers. Results show well-matched passbands between orthogonal polarization channels and frequency centers within 3% of the design values. The optical efficiency of each frequency channel is conservatively reported to be within the range 0.64−0.72, determined from the response to a cryogenic, temperature-controlled thermal source. These values are in good agreement with expectations and either exceed or are within 10% of the values used in the LiteBIRD sensitivity forecast. Lastly, we report a measurement of loss in Nb/SiNx/Nb microstrip at 100 mK and over the frequency range 200–350 GHz, which is comparable to values previously reported in the literature

Published
2022

26. Deexcitation Dynamics of Muonic Atoms Revealed by High-Precision Spectroscopy of Electronic K X Rays

Author

Okumura, T., primary, Azuma, T., additional, Bennett, D. A., additional, Caradonna, P., additional, Chiu, I., additional, Doriese, W. B., additional, Durkin, M. S., additional, Fowler, J. W., additional, Gard, J. D., additional, Hashimoto, T., additional, Hayakawa, R., additional, Hilton, G. C., additional, Ichinohe, Y., additional, Indelicato, P., additional, Isobe, T., additional, Kanda, S., additional, Kato, D., additional, Katsuragawa, M., additional, Kawamura, N., additional, Kino, Y., additional, Kubo, M. K., additional, Mine, K., additional, Miyake, Y., additional, Morgan, K. M., additional, Ninomiya, K., additional, Noda, H., additional, O’Neil, G. C., additional, Okada, S., additional, Okutsu, K., additional, Osawa, T., additional, Paul, N., additional, Reintsema, C. D., additional, Schmidt, D. R., additional, Shimomura, K., additional, Strasser, P., additional, Suda, H., additional, Swetz, D. S., additional, Takahashi, T., additional, Takeda, S., additional, Takeshita, S., additional, Tampo, M., additional, Tatsuno, H., additional, Tong, X. M., additional, Ueno, Y., additional, Ullom, J. N., additional, Watanabe, S., additional, and Yamada, S., additional

Published
2021
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32. 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

Author

Szypryt, P., primary, O’Neil, G. C., additional, Takacs, E., additional, Tan, J. N., additional, Buechele, S. W., additional, Naing, A. S., additional, Bennett, D. A., additional, Doriese, W. B., additional, Durkin, M., additional, Fowler, J. W., additional, Gard, J. D., additional, Hilton, G. C., additional, Morgan, K. M., additional, Reintsema, C. D., additional, Schmidt, D. R., additional, Swetz, D. S., additional, Ullom, J. N., additional, and Ralchenko, Yu., additional

Published
2019
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33. On Low-Energy Tail Distortions in the Detector Response Function of X-Ray Microcalorimeter Spectrometers

Author

O’Neil, G. C., primary, Szypryt, P., additional, Takacs, E., additional, Tan, J. N., additional, Buechele, S. W., additional, Naing, A. S., additional, Joe, Y. I., additional, Swetz, D., additional, Schmidt, D. R., additional, Doriese, W. B., additional, Gard, J. D., additional, Reintsema, C. D., additional, Ullom, J. N., additional, Villarrubia, J. S., additional, and Ralchenko, Yu., additional

Published
2019
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35. Kaonic Atom Experiments at J-PARC

Author

Hashimoto, T., primary, Aikawa, S., additional, Ajimura, S., additional, Akaishi, T., additional, Asano, H., additional, Bazzi, M., additional, Beer, G., additional, Bennett, D., additional, Berucci, C., additional, Bosnar, D., additional, Bragadireanu, M., additional, Bhler, P., additional, Busso, L., additional, Butt, A. D., additional, Cargnelli, M., additional, Choi, Seonho, additional, Curceanu, C., additional, Doriese, W. B., additional, Durkin, M. S., additional, Enomoto, S., additional, Ezoe, Y., additional, Fowler, J. W., additional, Fujioka, H., additional, Fukuda, T., additional, Guaraldo, C., additional, Gustafsson, F. P., additional, Han, C., additional, Hayakawa, R., additional, Hayano, R. S., additional, Hayashi, T., additional, Hays-Wehle, J. P., additional, Hilton, G. C., additional, Hiraiwa, T., additional, Ichinohe, Y., additional, Iio, M., additional, Iizawa, Y., additional, Iliescu, M., additional, Inoue, K., additional, Ishimoto, S., additional, Ishisaki, Y., additional, Itahashi, K., additional, Iwasaki, M., additional, Kawasaki, S., additional, Ma, Y., additional, Marton, J., additional, Matsuda, Y., additional, Mizoi, Y., additional, Morra, O., additional, Murakami, T., additional, Nagae, T., additional, Nishi, T., additional, Noda, H., additional, Noumi, H., additional, Nunomura, K., additional, O’Neil, G. C., additional, Ohashi, T., additional, Ohnishi, H., additional, Okada, S., additional, Outa, H., additional, Piscicchia, K., additional, Reintsema, C. D., additional, Sada, Y., additional, Sakaguchi, A., additional, Sakuma, F., additional, Sato, M., additional, Schmidt, D. R., additional, Scordo, A., additional, Sekimoto, M., additional, Shi, H., additional, Shirotori, K., additional, Sirghi, D., additional, Sirghi, F., additional, Suzuki, K., additional, Suzuki, S., additional, Suzuki, T., additional, Swetz, D. S., additional, Takamine, A., additional, Tanida, K., additional, Tatsuno, H., additional, Tomono, D., additional, Toyoda, A., additional, Trippl, C., additional, Tsukada, K., additional, Uhlig, J., additional, Ullom, J. N., additional, Vazquez Doce, O., additional, Widmann, E., additional, Yamada, S., additional, Yamaga, T., additional, Yamazaki, T., additional, and Zmeskal, J., additional

Published
2019
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36. Mitigating the Effects of Charged Particle Strikes on TES Arrays for Exotic Atom X-ray Experiments.

Author

Tatsuno, H., Bennett, D. A., Doriese, W. B., Durkin, M. S., Fowler, J. W., Gard, J. D., Hashimoto, T., Hayakawa, R., Hayashi, T., Hilton, G. C., Ichinohe, Y., Noda, H., O'Neil, G. C., Okada, S., Reintsema, C. D., Schmidt, D. R., Swetz, D. S., Ullom, J. N., and Yamada, S.

Subjects
EXOTIC atoms, X-rays, PARTICLES, STRIKES & lockouts, CROSSTALK
Abstract

Exotic atom experiments place transition-edge sensor (TES) microcalorimeter arrays in a high-energy charged particle-rich environment. When a high-energy charged particle passes through the silicon substrate of a TES array, a large amount of energy is deposited and small pulses are generated across multiple pixels in the TES array due to thermal crosstalk. We have developed analysis techniques to assess and reduce the effects of charged particle events on exotic atom X-ray measurements. Using this technique, the high-energy and low-energy components of the X-ray peaks due to pileup are eliminated, improving the energy resolution from 6.6 to 5.7 eV at 6.9 keV. [ABSTRACT FROM AUTHOR]

Published
2020
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37. High Energy Background Event Identification Using Local Group Trigger in a 240-pixel X-ray TES Array.

Author

Yamada, S., Hayakawa, R., Tatsuno, H., Fowler, J. W., Swetz, D. S., Bennett, D. A., Durkin, M., O'Neil, G. C., Ullom, J. N., Doriese, W. B., Reintsema, C. D., Gard, J. D., Okada, S., Hashimoto, T., Ichinohe, Y., Noda, H., and Hayashi, T.

Subjects
X-rays, DATA acquisition systems, X-ray spectra, ION bombardment, X-ray astronomy
Abstract

A novel triggering function developed for 240-pixel Transition-Edge Sensors is demonstrated under the high rate of particle background. The function is integrated into the standard data acquisition system in the NIST TES framework. It enables any type of combination of trigger pattern when a pixel is triggered, which is called "group trigger." As a practical implementation, the primary trigger is distributed to the four physically nearest pixels. The group trigger function was utilized throughout the entire one-month J-PARC experiment for the measurement of the Kaonic-atom X-rays. This trigger allowed us to confirm that the increased background and degraded energy resolution we observed when operating the TES array in the presence of an ion beam are the result of thermal crosstalk from charged particles. We show that the maximum of the average of the signals among the neighboring four pixels is useful for event selection. We use cuts based on this parameter to improve the peak-to-background level in a measured x-ray energy spectrum by a factor of ∼ 2, while keeping 95% of measured events. This flexible group triggering technique allows us to improve the signal to noise on the very faint Kaonic Helium x-ray lines we are measuring, better understand our experiment environment, and we believe this technique may prove useful in other ground and space-based TES applications. [ABSTRACT FROM AUTHOR]

Published
2020
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38. Waveform Analysis of a 240-Pixel TES Array for X-Rays and Charged Particles Using a Function of Triggering Neighboring Pixels.

Author

Hayakawa, R., Yamada, S., Tatsuno, H., Fowler, J. W., Swetz, D. S., Bennett, D. A., Durkin, M., O'Neil, G. C., Ullom, J. N., Doriese, W. B., Reintsema, C. D., Gard, J. D., Okada, S., Hashimoto, T., Ichinohe, Y., Noda, H., and Hayashi, T.

Subjects
WAVE analysis, X-rays, DATA acquisition systems, PIXELS, CROSSTALK
Abstract

A useful function, called group trigger, is implemented in a data acquisition system of a 240-pixel X-ray transition-edge sensor array to store simultaneous waveforms from any desired set of pixels. It works as a diagnostic tool which can record both primary pulses and associated crosstalk events with enough freedom to optimize the data output. Under a high rate of charged particle background, such as in an accelerator, investigating signals from any combination of trigger patterns for a particular event is of high importance. We utilized this function throughout an entire experiment at J-PARC, measuring kaonic atom X-rays in 2018. This was the first time a group trigger was applied to exotic-atom spectroscopy. In this experiment, the primary trigger was distributed to the four physical nearest neighbor pixels for practical purposes. The function clarified the effect of thermal and electrical cross talk from X-rays and charged particles, resulting in a better understanding of the behavior of the TES array in such a high-background environment. [ABSTRACT FROM AUTHOR]

Published
2020
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39. Integration of a TES-based X-ray spectrometer in a kaonic atom experiment.

Author

Hashimoto, T., Bennett, D. A., Doriese, W. B., Durkin, M. S., Fowler, J. W., Gard, J. D., Hayakawa, R., Hayashi, T., Hilton, G. C., Ichinohe, Y., Ishimoto, S., Morgan, K. M., Noda, H., O'Neil, G. C., Okada, S., Reintsema, C. D., Schmidt, D. R., Suzuki, S., Swetz, D. S., and Tatsuno, H.

Subjects
CRYOGENIC liquids, LIQUID helium, X-ray spectrometers, HELIUM atom, THERMAL shielding, MAGNETIC shielding
Abstract

We integrated a TES X-ray spectrometer with a charged kaon beam line at J-PARC to perform X-ray spectroscopy of kaonic helium atoms. Limited beam intensity and a broad beam spot size made it crucial to increase the detector acceptance angle as much as possible, requiring significant development. To this end, our TES system shared the same vacuum with a cryogenic system of the liquid helium experimental target. We also specially developed a target cell for liquid helium and a thinned aperture array on top of the TES detector. Additionally, thermal and magnetic shields and infrared filters were optimized in terms of a larger acceptance angle and energy resolution of the detector. The scientific campaign was performed in June, 2018, where the whole system was stably operated for almost one month. [ABSTRACT FROM AUTHOR]

Published
2020
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40. On Low-Energy Tail Distortions in the Detector Response Function of X-Ray Microcalorimeter Spectrometers.

Author

O'Neil, G. C., Szypryt, P., Takacs, E., Tan, J. N., Buechele, S. W., Naing, A. S., Joe, Y. I., Swetz, D., Schmidt, D. R., Doriese, W. B., Gard, J. D., Reintsema, C. D., Ullom, J. N., Villarrubia, J. S., and Ralchenko, Yu.

Subjects
TAILS, X-ray spectrometers, X-ray spectra, SPECTRAL lines, GAUSSIAN function, DETECTORS
Abstract

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 review the literature on low-energy tails in other microcalorimeter X-ray spectrometers and present a model that explains all the reviewed tail fraction measurements. In this model, a low-energy tail arises from the combination of electron escape and energy trapping associated with Bi X-ray absorbers. [ABSTRACT FROM AUTHOR]

Published
2020
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41. Time- and code-division SQUID multiplexing options for ATHENA X-IFU (Conference Presentation)

Author

Ullom, Joel N., primary, Adams, Joseph S., additional, Alpert, Bradley K., additional, Bandler, Simon R., additional, Bennett, Douglas A., additional, Chaudhuri, Saptarshi, additional, Chervenak, James A., additional, Denison, E. V., additional, Dawson, C., additional, Doriese, W. B., additional, Durkin, M., additional, Fowler, J. W., additional, Gard, Johnathon, additional, Hilton, G. C., additional, Irwin, Kent D., additional, Joe, Y. I., additional, Kilbourne, Caroline A., additional, Mates, John A. B., additional, Morgan, Kelsey M., additional, O'Neil, G. C., additional, Reintsema, C. D., additional, Schmidt, D. R., additional, Smith, Stephen J., additional, Swetz, Daniel S., additional, Titus, C. J., additional, Vale, L. R., additional, and Young, B. A., additional

Published
2018
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44. Quasiparticle density of states measurements in clean superconducting AlMn alloys.

Author

O'Neil, G. C., Schmidt, D. R., Tomlin, N. A., and Ullom, J. N.

Subjects
*METALS -- Electron theory, *DENSITY of states, *PHASE equilibrium, *MICROALLOYING, *METALLIC composites
Abstract

Aluminum doped with Manganese (AlMn) forms a superconducting alloy with the transition temperature suppressed by the added manganese. We present quasiparticle density of states (DOS) measurements on superconducting AlMn alloys made by current-voltage measurements on normal-metal/insulator/superconductor tunnel junctions. The DOS remains Bardeen-Cooper- Schrieffer-like with a reduced gap, matching the predictions of Kaiser. However, we measure additional subgap states not predicted by Kaiser, and demonstrate that these subgap states will harm some potential applications. [ABSTRACT FROM AUTHOR]

Published
2010
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45. Kaonic-Atom X-ray Spectroscopy with Superconducting Microcalorimeters

Author

Hashimoto, T., primary, Bazzi, M., additional, Bennett, D. A., additional, Berucci, C., additional, Bosnar, D., additional, Curceanu, C., additional, Doriese, W. B., additional, Fowler, J. W., additional, Fujioka, H., additional, Guaraldo, C., additional, Gustafsson, F. Parnefjord, additional, Hayano, R. S., additional, Hays-Wehle, J. P., additional, Hilton, G. C., additional, Hiraiwa, T., additional, Iio, M., additional, Iliescu, M., additional, Ishimoto, S., additional, Itahashi, K., additional, Iwasaki, M., additional, Ma, Y., additional, Noumi, H., additional, O’Neil, G. C., additional, Ohnishi, H., additional, Okada, S., additional, Outa, H., additional, Piscicchia, K., additional, Reintsema, C. D., additional, Sada, Y., additional, Sakuma, F., additional, Sato, M., additional, Schmidt, D. R., additional, Scordo, A., additional, Sekimoto, M., additional, Shi, H., additional, Sirghi, D., additional, Sirghi, F., additional, Suzuki, K., additional, Swetz, D. S., additional, Tanida, K., additional, Tatsuno, H., additional, Tokuda, M., additional, Uhlig, J., additional, Ullom, J. N., additional, Yamada, S., additional, Yamazaki, T., additional, and Zmeskal, J., additional

Published
2017
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46. A reassessment of absolute energies of the x-ray L lines of lanthanide metals

Author

Fowler, J W, primary, Alpert, B K, additional, Bennett, D A, additional, Doriese, W B, additional, Gard, J D, additional, Hilton, G C, additional, Hudson, L T, additional, Joe, Y-I, additional, Morgan, K M, additional, O’Neil, G C, additional, Reintsema, C D, additional, Schmidt, D R, additional, Swetz, D S, additional, Szabo, C I, additional, and Ullom, J N, additional

Published
2017
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47. Beamline Test of a Transition-Edge-Sensor Spectrometer in Preparation for Kaonic-Atom Measurements

Author

Hashimoto, T., primary, Bazzi, M., additional, Bennett, D. A., additional, Berucci, C., additional, Bosnar, D., additional, Curceanu, C., additional, Doriese, W. B., additional, Fowler, J. W., additional, Fujioka, H., additional, Guaraldo, C., additional, Parnefjord Gustafsson, F., additional, Hayakawa, R., additional, Hayano, R. S., additional, Hays-Wehle, J. P., additional, Hilton, G. C., additional, Hiraiwa, T., additional, Ichinohe, Y., additional, Iio, M., additional, Iliescu, M., additional, Ishimoto, S., additional, Ishisaki, Y., additional, Itahashi, K., additional, Iwasaki, M., additional, Ma, Y., additional, Noda, H., additional, Noumi, H., additional, O'Neil, G. C., additional, Ohnishi, H., additional, Okada, S., additional, Outa, H., additional, Piscicchia, K., additional, Reintsema, C. D., additional, Sada, Y., additional, Sakuma, F., additional, Sato, M., additional, Schmidt, D. R., additional, Scordo, A., additional, Sekimoto, M., additional, Shi, H., additional, Sirghi, D., additional, Sirghi, F., additional, Suzuki, K., additional, Swetz, D. S., additional, Tanida, K., additional, Tatsuno, H., additional, Tokuda, M., additional, Uhlig, J., additional, Ullom, J. N., additional, Yamada, S., additional, Yamazaki, T., additional, and Zmeskal, J., additional

Published
2017
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48. When “Optimal Filtering” Isn’t

Author

Fowler, J. W., primary, Alpert, B. K., additional, Doriese, W. B., additional, Hays-Wehle, J., additional, Joe, Y.-I., additional, Morgan, K. M., additional, O'Neil, G. C., additional, Reintsema, C. D., additional, Schmidt, D. R., additional, Ullom, J. N., additional, and Swetz, D. S., additional

Published
2017
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49. A practical superconducting-microcalorimeter X-ray spectrometer for beamline and laboratory science

Author

Doriese, W. B., primary, Abbamonte, P., additional, Alpert, B. K., additional, Bennett, D. A., additional, Denison, E. V., additional, Fang, Y., additional, Fischer, D. A., additional, Fitzgerald, C. P., additional, Fowler, J. W., additional, Gard, J. D., additional, Hays-Wehle, J. P., additional, Hilton, G. C., additional, Jaye, C., additional, McChesney, J. L., additional, Miaja-Avila, L., additional, Morgan, K. M., additional, Joe, Y. I., additional, O’Neil, G. C., additional, Reintsema, C. D., additional, Rodolakis, F., additional, Schmidt, D. R., additional, Tatsuno, H., additional, Uhlig, J., additional, Vale, L. R., additional, Ullom, J. N., additional, and Swetz, D. S., additional

Published
2017
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50. Code-division-multiplexed readout of large arrays of TES microcalorimeters

Author

Morgan, K. M., primary, Alpert, B. K., additional, Bennett, D. A., additional, Denison, E. V., additional, Doriese, W. B., additional, Fowler, J. W., additional, Gard, J. D., additional, Hilton, G. C., additional, Irwin, K. D., additional, Joe, Y. I., additional, O'Neil, G. C., additional, Reintsema, C. D., additional, Schmidt, D. R., additional, Ullom, J. N., additional, and Swetz, D. S., additional

Published
2016
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