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2,299 results on '"UEMURA, S."'

1. Measurement of J/ψ and ψ ( 2 S ) production in p + p and p + d interactions at 120 GeV

Author

Collaboration, SeaQuest, Leung, CH, Nagai, K, Nakano, K, Nawarathne, D, Dove, J, Prasad, S, Wuerfel, N, Aidala, CA, Arrington, J, Ayuso, C, Barker, CL, Brown, CN, Chang, WC, Chen, A, Christian, DC, Dannowitz, BP, Daugherity, M, Fassi, L El, Geesaman, DF, Gilman, R, Goto, Y, Guo, R, Hague, TJ, Holt, RJ, Hossain, MF, Isenhower, D, Kinney, E, Klein, A, Kleinjan, DW, Kudo, Y, Lin, P-J, Liu, K, Liu, MX, Lorenzon, W, McClellan, RE, McGaughey, PL, Medeiros, MM, Miyachi, Y, Miyasaka, S, Morton, DH, Nakahara, K, Nara, S, Pate, SF, Peng, JC, Pun, A, Ramson, BJ, Reimer, PE, Rubin, JG, Sanftl, F, Sawada, S, Sawada, T, Scott, MBC, Shibata, T-A, Tadepalli, AS, Teo, M, Towell, RS, Uemura, S, Wang, SG, Wickes, AB, Wu, J, and Ye, ZH

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, Mathematical sciences, Physical sciences
Abstract

We report the p+p and p+d differential cross sections measured in the SeaQuest experiment for J/ψ and ψ(2S) production at [Formula presented] beam energy covering the forward x-Feynman (xF) range of 0.5

Published
2024

2. Measurement of $J/\psi$ and $\psi\left(2S\right)$ production in $p+p$ and $p+d$ interactions at 120 GeV

Author

Leung, C. H., Nagai, K., Nakano, K., Nawarathne, D., Dove, J., Prasad, S., Wuerfel, N., Aidala, C. A., Arrington, J., Ayuso, C., Barker, C. L., Brown, C. N., Chang, W. C., Chen, A., Christian, D. C., Dannowitz, B. P., Daugherity, M., Fassi, L. El, Geesaman, D. F., Gilman, R., Goto, Y., Guo, R., Hague, T. J., Holt, R. J., Hossain, M. F., Isenhower, D., Kinney, E., Klein, A., Kleinjan, D. W., Kudo, Y., Lin, P. -J., Liu, K., Liu, M. X., Lorenzon, W., McClellan, R. E., McGaughey, P. L., Medeiros, M. M., Miyachi, Y., Miyasaka, S., Morton, D. H., Nakahara, K., Nara, S., Pate, S. F., Peng, J. C., Pun, A., Ramson, B. J., Reimer, P. E., Rubin, J. G., Sanftl, F., Sawada, S., Sawada, T., Scott, M. B. C., Shibata, T. -A., Tadepalli, A. S., Teo, M., Towell, R. S., Uemura, S., Wang, S. G., Wickes, A. B., Wu, J., and Ye, Z. H.

Subjects
High Energy Physics - Experiment, Nuclear Experiment
Abstract

We report the $p+p$ and $p+d$ differential cross sections measured in the SeaQuest experiment for $J/\psi$ and $\psi\left(2S\right)$ production at 120 GeV beam energy covering the forward $x$-Feynman ($x_F$) range of $0.5 < x_F <0.9$. The measured cross sections are in good agreement with theoretical calculations based on the nonrelativistic QCD (NRQCD) using the long-distance matrix elements deduced from a recent global analysis of proton- and pion-induced charmonium production data. The $\sigma_{\psi\left(2S\right)} / \sigma_{J/\psi}$ cross section ratios are found to increase as $x_F$ increases, indicating that the $q \bar{q}$ annihilation process has larger contributions in the $\psi\left(2S\right)$ production than the $J/\psi$ production. The $\sigma_{pd}/2\sigma_{pp}$ cross section ratios are observed to be significantly different for the Drell-Yan process and $J/\psi$ production, reflecting their different production mechanisms. We find that the $\sigma_{pd}/2\sigma_{pp}$ ratios for $J/\psi$ production at the forward $x_F$ region are sensitive to the $\bar{d}/ \bar{u}$ flavor asymmetry of the proton sea, analogous to the Drell-Yan process. The transverse momentum ($p_T$) distributions for $J/\psi$ and $\psi\left(2S\right)$ production are also presented and compared with data collected at higher center-of-mass energies., Comment: 8 pages, 7 figures, with 1 page of supplementary material which has 2 figures

Published
2024
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3. First Measurement of Correlated Charge Noise in Superconducting Qubits at an Underground Facility

Author

Bratrud, G., Lewis, S., Anyang, K., Cesaní, A. Colón, Dyson, T., Magoon, H., Sabhari, D., Spahn, G., Wagner, G., Gualtieri, R., Kurinsky, N. A., Linehan, R., McDermott, R., Sussman, S., Temples, D. J., Uemura, S., Bathurst, C., Cancelo, G., Chen, R., Chou, A., Hernandez, I., Hollister, M., Hsu, L., James, C., Kennard, K., Khatiwada, R., Lukens, P., Novati, V., Raha, N., Ray, S., Ren, R., Rodriguez, A., Schmidt, B., Stifter, K., Yu, J., Baxter, D., Figueroa-Feliciano, E., and Bowring, D.

Subjects
Quantum Physics, High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

We measure space- and time-correlated charge jumps on a four-qubit device, operating 107 meters below the Earth's surface in a low-radiation, cryogenic facility designed for the characterization of low-threshold particle detectors. The rock overburden of this facility reduces the cosmic ray muon flux by over 99% compared to laboratories at sea level. Combined with 4$\pi$ coverage of a movable lead shield, this facility enables quantifiable control over the flux of ionizing radiation on the qubit device. Long-time-series charge tomography measurements on these weakly charge-sensitive qubits capture discontinuous jumps in the induced charge on the qubit islands, corresponding to the interaction of ionizing radiation with the qubit substrate. The rate of these charge jumps scales with the flux of ionizing radiation on the qubit package, as characterized by a series of independent measurements on another energy-resolving detector operating simultaneously in the same cryostat with the qubits. Using lead shielding, we achieve a minimum charge jump rate of 0.19$^{+0.04}_{-0.03}$ mHz, almost an order of magnitude lower than that measured in surface tests, but a factor of roughly eight higher than expected based on reduction of ambient gammas alone. We operate four qubits for over 22 consecutive hours with zero correlated charge jumps at length scales above three millimeters., Comment: 12 pages, 6 figures, 4 tables. Minor update to the measured gamma flux ratio (Page 4 and Supplemental Section F) in the LMO detector, from 23 to 20. Typos corrected, references added. Extraneous .tex files have been removed that were causing errors with the "HTML (experimental)" arxiv feature

Published
2024

4. Cryogenic optical beam steering for superconducting device calibration

Author

Stifter, K., Magoon, H., Anderson, A. J., Temples, D. J., Kurinsky, N. A., Stoughton, C., Hernandez, I., Nuñez, A., Anyang, K., Linehan, R., Young, M. R., Barry, P., Baxter, D., Bowring, D., Cancelo, G., Chou, A., Dibert, K. R., Figueroa-Feliciano, E., Hsu, L., Khatiwada, R., Mork, S. D., Stefanazzi, L., Tabassum, N., Uemura, S., and Young, B. A.

Subjects
Quantum Physics, High Energy Physics - Experiment
Abstract

We have developed a calibration system based on a micro-electromechanical systems (MEMS) mirror that is capable of delivering an optical beam over a wavelength range of 180 -- 2000 nm (0.62 -- 6.89 eV) in a sub-Kelvin environment. This portable, integrated system can steer the beam over a $\sim$3 cm $\times$ 3 cm area on the surface of any sensor with a precision of $\sim$100 $\mu$m, enabling characterization of device response as a function of position. This fills a critical need in the landscape of calibration tools for sub-Kelvin devices, including those used for dark matter detection and quantum computing. These communities have a shared goal of understanding the impact of ionizing radiation on device performance, which can be pursued with our system. This paper describes the design of the first-generation calibration system and the results from successfully testing its performance at room temperature and 20 mK., Comment: 17 pages, 7 figures, submitted to SPIE

Published
2024

5. Confirmation of the spectral excess in DAMIC at SNOLAB with skipper CCDs

Author

Aguilar-Arevalo, A, Arnquist, I, Avalos, N, Barak, L, Baxter, D, Bertou, X, Bloch, IM, Botti, AM, Cababie, M, Cancelo, G, Castelló-Mor, N, Cervantes-Vergara, BA, Chavarria, AE, Cortabitarte-Gutiérrez, J, Crisler, M, Cuevas-Zepeda, J, Dastgheibi-Fard, A, De Dominicis, C, Deligny, O, Drlica-Wagner, A, Duarte-Campderros, J, D’Olivo, JC, Essig, R, Estrada, E, Estrada, J, Etzion, E, Favela-Perez, F, Gadola, N, Gaïor, R, Holland, SE, Hossbach, T, Iddir, L, Kilminster, B, Korn, Y, Lantero-Barreda, A, Lawson, I, Lee, S, Letessier-Selvon, A, Loaiza, P, Lopez-Virto, A, Luoma, S, Marrufo-Villalpando, E, McGuire, KJ, Moroni, GF, Munagavalasa, S, Norcini, D, Orly, A, Papadopoulos, G, Paul, S, Perez, SE, Piers, A, Privitera, P, Robmann, P, Rodrigues, D, Saffold, NA, Scorza, S, Settimo, M, Singal, A, Smida, R, Sofo-Haro, M, Stefanazzi, L, Stifter, K, Tiffenberg, J, Traina, M, Uemura, S, Vila, I, Vilar, R, Volansky, T, Warot, G, Yajur, R, Yu, T-T, and Zopounidis, J-P

Subjects
Nuclear and Plasma Physics, Physical Sciences
Abstract

We present results from a 3.25 kg-day target exposure of two silicon charge-coupled devices (CCDs), each with 24 megapixels and skipper readout, deployed in the DAMIC setup at SNOLAB. With a reduction in pixel readout noise of a factor of 10 relative to the previous detector, we investigate the excess population of low-energy events in the CCD bulk previously observed above expected backgrounds. We address the dominant systematic uncertainty of the previous analysis through a depth fiducialization designed to reject surface backgrounds on the CCDs. The measured bulk ionization spectrum confirms the presence of an excess population of low-energy events in the CCD target with characteristic rate of ∼7 events per kg-day and electron-equivalent energies of ∼80 eV, whose origin remains unknown.

Published
2024

6. Confirmation of the spectral excess in DAMIC at SNOLAB with skipper CCDs

Author

Aguilar-Arevalo, A., Arnquist, I., Avalos, N., Barak, L., Baxter, D., Bertou, X., Bloch, I. M., Botti, A. M., Cababie, M., Cancelo, G., Castelló-Mor, N., Cervantes-Vergara, B. A., Chavarria, A. E., Cortabitarte-Gutiérrez, J., Crisler, M., Cuevas-Zepeda, J., Dastgheibi-Fard, A., De Dominicis, C., Deligny, O., Drlica-Wagner, A., Duarte-Campderros, J., D'Olivo, J. C., Essig, R., Estrada, E., Estrada, J., Etzion, E., Favela-Perez, F., Gadola, N., Gaïor, R., Holland, S. E., Hossbach, T., Iddir, L., Kilminster, B., Korn, Y., Lantero-Barreda, A., Lawson, I., Lee, S., Letessier-Selvon, A., Loaiza, P., Lopez-Virto, A., Luoma, S., Marrufo-Villalpando, E., McGuire, K. J., Moroni, G. F., Munagavalasa, S., Norcini, D., Orly, A., Papadopoulos, G., Paul, S., Perez, S. E., Piers, A., Privitera, P., Robmann, P., Rodrigues, D., Saffold, N. A., Scorza, S., Settimo, M., Singal, A., Smida, R., Sofo-Haro, M., Stefanazzi, L., Stifter, K., Tiffenberg, J., Traina, M., Uemura, S., Vila, I., Vilar, R., Volansky, T., Warot, G., Yajur, R., Yu, T-T., and Zopounidis, J-P.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment, Nuclear Experiment
Abstract

We present results from a 3.25 kg-day target exposure of two silicon charge-coupled devices (CCDs), each with 24 megapixels and skipper readout, deployed in the DAMIC setup at SNOLAB. With a reduction in pixel readout noise of a factor of 10 relative to the previous detector, we investigate the excess population of low-energy events in the CCD bulk previously observed above expected backgrounds. We address the dominant systematic uncertainty of the previous analysis through a depth fiducialization designed to reject surface backgrounds on the CCDs. The measured bulk ionization spectrum confirms the presence of an excess population of low-energy events in the CCD target with characteristic rate of ${\sim}7$ events per kg-day and electron-equivalent energies of ${\sim}80~$eV, whose origin remains unknown., Comment: 8 pages, 4 figures

Published
2023
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7. Measurement of flavor asymmetry of the light-quark sea in the proton with Drell-Yan dimuon production in p+p and p+d collisions at 120 GeV

Author

Dove, J, Kerns, B, Leung, C, McClellan, RE, Miyasaka, S, Morton, DH, Nagai, K, Prasad, S, Sanftl, F, Scott, MBC, Tadepalli, AS, Aidala, CA, Arrington, J, Ayuso, C, Barker, CT, Brown, CN, Chang, TH, Chang, WC, Chen, A, Christian, DC, Dannowitz, BP, Daugherity, M, Diefenthaler, M, Fassi, L El, Geesaman, DF, Gilman, R, Goto, Y, Guo, L, Guo, R, Hague, TJ, Holt, RJ, Isenhower, D, Kinney, ER, Kitts, ND, Klein, A, Kleinjan, DW, Kudo, Y, Lin, P-J, Liu, K, Liu, MX, Lorenzon, W, Makins, NCR, de Medeiros, M Mesquita, McGaughey, PL, Miyachi, Y, Mooney, I, Nakahara, K, Nakano, K, Nara, S, Peng, JC, Puckett, AJ, Ramson, BJ, Reimer, PE, Rubin, JG, Sawada, S, Sawada, T, Shibata, T-A, Shiu, SH, Su, D, Teo, M, Tice, BG, Towell, RS, Uemura, S, Watson, TS, Wang, SG, Wickes, AB, Wu, J, Xi, Z, and Ye, Z

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Nuclear and plasma physics
Abstract

Evidence for a flavor asymmetry between the ū and d¯ quark distributions in the proton has been found in deep-inelastic scattering and Drell-Yan experiments. The pronounced dependence of this flavor asymmetry on x (fraction of nucleon momentum carried by partons) observed in the Fermilab E866 Drell-Yan experiment suggested a drop of the d¯(x)/ū(x) ratio in the x>0.15 region. We report results from the SeaQuest Fermilab E906 experiment with improved statistical precision for d¯(x)/ū(x) in the large x region up to x=0.45 using the 120 GeV proton beam. Two different methods for extracting the Drell-Yan cross section ratios, σpd/2σpp, from the SeaQuest data give consistent results. The d¯(x)/ū(x) ratios and the d¯(x)-ū(x) differences are deduced from these cross section ratios for 0.13

Published
2023

8. Measurement of flavor asymmetry of light-quark sea in the proton with Drell-Yan dimuon production in $p+p$ and $p+d$ collisions at 120 GeV

Author

Dove, J., Kerns, B., Leung, C., McClellan, R. E., Miyasaka, S., Morton, D. H., Nagai, K., Prasad, S., Sanftl, F., Scott, M. B. C., Tadepalli, A. S., Aidala, C. A., Arrington, J., Ayuso, C., Barker, C. T., Brown, C. N., Chang, T. H., Chang, W. C., Chen, A., Christian, D. C., Dannowitz, B. P., Daugherity, M., Diefenthaler, M., Fassi, L. El, Geesaman, D. F., Gilman, R., Goto, Y., Guo, L., Guo, R., Hague, T. J., Holt, R. J., Isenhower, D., Kinney, E. R., Kitts, N. D., Klein, A., Kleinjan, D. W., Kudo, Y., Lin, P. -J., Liu, K., Liu, M. X., Lorenzon, W., Makins, N. C. R., de Medeiros, M. Mesquita, McGaughey, P. L., Miyachi, Y., Mooney, I., Nakahara, K., Nakano, K., Nara, S., Peng, J. C., Puckett, A. J., Ramson, B. J., Reimer, P. E., Rubin, J. G., Sawada, S., Sawada, T., Shibata, T. -A., Shiu, S. H., Su, D., Teo, M., Tice, B. G, Towell, R. S., Uemura, S., Watson, T. S., Wang, S. G., Wickes, A. B., Wu, J., Xi, Z., and Ye, Z.

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Experiment, Nuclear Experiment
Abstract

Evidence for a flavor asymmetry between the $\bar u$ and $\bar d$ quark distributions in the proton has been found in deep-inelastic scattering and Drell-Yan experiments. The pronounced dependence of this flavor asymmetry on $x$ (fraction of nucleon momentum carried by partons) observed in the Fermilab E866 Drell-Yan experiment suggested a drop of the $\bar d\left(x\right) / \bar u\left(x\right)$ ratio in the $x > 0.15$ region. We report results from the SeaQuest Fermilab E906 experiment with improved statistical precision for $\bar d\left(x\right) / \bar u\left(x\right)$ in the large $x$ region up to $x=0.45$ using the 120 GeV proton beam. Two different methods for extracting the Drell-Yan cross section ratios, $\sigma^{pd} /2 \sigma^{pp}$, from the SeaQuest data give consistent results. The $\bar{d}\left(x\right) / \bar{u}\left(x\right)$ ratios and the $\bar d\left(x\right) - \bar u\left(x\right)$ differences are deduced from these cross section ratios for $0.13 < x < 0.45$. The SeaQuest and E866/NuSea $\bar{d}\left(x\right) / \bar{u}\left(x\right)$ ratios are in good agreement for the $x\lesssim 0.25$ region. The new SeaQuest data, however, show that $\bar d\left(x\right)$ continues to be greater than $\bar u\left(x\right)$ up to the highest $x$ value ($x = 0.45$). The new results on $\bar{d}\left(x\right) / \bar{u}\left(x\right)$ and $\bar{d}\left(x\right) - \bar{u}\left(x\right)$ are compared with various parton distribution functions and theoretical calculations.

Published
2022

9. Searching for Prompt and Long-Lived Dark Photons in Electro-Produced $e^+e^-$ Pairs with the Heavy Photon Search Experiment at JLab

Author

Adrian, P. H., Baltzell, N. A., Battaglieri, M., Bondi, M., Boyarinov, S., Bravo, C., Bueltmann, S., Butti, P., Burkert, V. D., Calvo, D., Cao, T., Carpinelli, M., Celentano, A., Charles, G., Colaneri, L., Cooper, W., Cuevas, C., D'Angelo, A., Dashyan, N., De Napoli, M., De Vita, R., Deur, A., Diamond, M., Dupre, R., Egiyan, H., Elouadrhiri, L., Essig, R., Fadeyev, V., Field, C., Filippi, A., Freyberger, A., Garcon, M., Gevorgyan, N., Girod, F. X., Graf, N., Graham, M., Griffioen, K. A., Grillo, A., Guidal, M., Herbst, R., Holtrop, M., Jaros, J., Johnson, R. P., Kalicy, G., Khandaker, M., Kubarovsky, V., Leonora, E., Livingston, K., Marsicano, L., Maruyama, T., McCarty, S., McCormick, J., McKinnon, B., Moffeit, K., Moreno, O., Camacho, C. Munoz, Nelson, T., Niccolai, S., Odian, A., Oriunno, M., Osipenko, M., Paremuzyan, R., Paul, S., Randazzo, N., Raydo, B., Reese, B., Rizzo, A., Schuster, P., Sharabian, Y. G., Simi, G., Simonyan, A., Sipala, V., Spellman, A., Sokhan, D., Solt, M., Stepanyan, S., Szumila-Vance, H., Toro, N., Uemura, S., Ungaro, M., Voskanyan, H., Weinstein, L. B., Wojtsekhowski, B., and Yale, B.

Subjects
High Energy Physics - Experiment
Abstract

The Heavy Photon Search experiment (HPS) at the Thomas Jefferson National Accelerator Facility searches for electro-produced dark photons. We report results from the 2016 Engineering Run consisting of 10608/nb of data for both the prompt and displaced vertex searches. A search for a prompt resonance in the $e^+e^-$ invariant mass distribution between 39 and 179 MeV showed no evidence of dark photons above the large QED background, limiting the coupling of {\epsilon}^2 {\geq} 10^-5, in agreement with previous searches. The search for displaced vertices showed no evidence of excess signal over background in the masses between 60 and 150 MeV, but had insufficient luminosity to limit canonical heavy photon production. This is the first displaced vertex search result published by HPS. HPS has taken high-luminosity data runs in 2019 and 2021 that will explore new dark photon phase space., Comment: 28 pages, 46 figures

Published
2022
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10. First results from a multiplexed and massive instrument with sub-electron noise Skipper-CCDs

Author

Chierchie, F., Chavez, C. R., Haro, M. Sofo, Moroni, G. Fernandez, Cervantes-Vergara, B. A., Perez, S., Estrada, J., Tiffenberg, J., Uemura, S., and Botti, A.

Subjects
Physics - Instrumentation and Detectors
Abstract

We present a new instrument composed of a large number of sub-electron noise Skipper-CCDs operated with a two stage analog multiplexed readout scheme suitable for scaling to thousands of channels. New, thick, $1.35$ Mpix sensors, from a new foundry, are glued into a Multi-Chip Module (MCM) printed circuit board on a ceramic substrate which has 16 sensors each. The instrument, that can hold up-to 16 MCMs, a total of 256 Skipper-CCD sensors (called a Super-Module with $\approx 130$ grams of active mass and $346$ Mpix), is part of the R$\&$D effort of the OSCURA experiment which will have $\approx 94$ super-modules. Experimental results with $10$ MCMs and $160$ Skipper-CCDs sensors are presented in this paper. This is already the largest ever build instrument with single electron sensitivity CCDs using nondestructive readout, both, in terms of active mass and number of channels., Comment: Corrected minor typos

Published
2022
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11. Snowmass2021 Cosmic Frontier: The landscape of low-threshold dark matter direct detection in the next decade

Author

Essig, Rouven, Giovanetti, Graham K., Kurinsky, Noah, McKinsey, Dan, Ramanathan, Karthik, Stifter, Kelly, Yu, Tien-Tien, Aboubrahim, A., Adams, D., Alves, D. S. M., Aralis, T., Araújo, H. M., Baxter, D., Berghaus, K. V., Berlin, A., Blanco, C., Bloch, I. M., Bonivento, W. M., Bunker, R., Burdin, S., Caminata, A., Carmona-Benitez, M. C., Chaplinsky, L., Chen, T. Y., Derenzo, S. E., de Viveiros, L., Dick, R., Di Marco, N., Du, P., Dutta, B., Ebadi, R., Emken, T., Esposito, A., Etzion, E., Feng, J. L., Fernandez, N., Ge, S. -F., Ghosh, S., Giroux, G., Hamaide, L., Hertel, S. A., Herrera, G., Hochberg, Y., Kahn, Y., Kavanagh, B. J., Khan, A. N., Kluck, H., Kravitz, S., von Krosigk, B., Kumar, J., Lawson, I. T., Lehmann, B. V., Lin, T., Liao, J., Lyon, S. A., Majewski, P. M., Manzari, C. A., Monroe, J., Monzani, M. E., Morrissey, D. E., Norcini, D., Orly, A., Parikh, A., Park, J. -C., Patel, P. K., Paul, S., Pèrez-Ríos, J., Phipps, A., Pocar, A., Ritz, A., Sarkis, Y., Schuster, P., Schwetz, T., Shaw, S., Shin, S., Singal, A., Singh, R., Slone, O., Sorensen, P., Sun, C., Szydagis, M., Temples, D. J., Testera, G., Thieme, K., Toro, N., Trickle, T., Uemura, S., Velan, V., Vitagliano, E., Wagner, F., Wang, G., Westerdale, S., and Zurek, K. M.

Subjects
High Energy Physics - Phenomenology, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment
Abstract

The search for particle-like dark matter with meV-to-GeV masses has developed rapidly in the past few years. We summarize the science case for these searches, the recent progress, and the exciting upcoming opportunities. Funding for Research and Development and a portfolio of small dark matter projects will allow the community to capitalize on the substantial recent advances in theory and experiment and probe vast regions of unexplored dark-matter parameter space in the coming decade., Comment: Contribution to Snowmass 2021. v2: includes endorsers and minor changes

Published
2022

12. EXCESS workshop: Descriptions of rising low-energy spectra

Author

Adari, P., Aguilar-Arevalo, A., Amidei, D., Angloher, G., Armengaud, E., Augier, C., Balogh, L., Banik, S., Baxter, D., Beaufort, C., Beaulieu, G., Belov, V., Gal, Y. Ben, Benato, G., Benoît, A., Bento, A., Bergé, L., Bertolini, A., Bhattacharyya, R., Billard, J., Bloch, I. M., Botti, A., Breier, R., Bres, G., Bret, J-. L., Broniatowski, A., Brossard, A., Bucci, C., Bunker, R., Cababie, M., Calvo, M., Camus, P., Cancelo, G., Canonica, L., Cappella, F., Cardani, L., Caron, J. -F., Casali, N., del Castello, G., Cazes, A., Cerulli, R., Vergara, B. A. Cervantes, Chaize, D., Chapellier, M., Chaplinsky, L., Charlieux, F., Chaudhuri, M., Chavarria, A. E., Chemin, G., Chen, R., Chen, H., Chierchie, F., Colantoni, I., Colas, J., Cooley, J., Coquillat, J. -M., Corcoran, E. C., Crawford, S., Crisler, M., Cruciani, A., Cushman, P., D'Addabbo, A., D'Olivo, J. C., Dastgheibi-Fard, A., De Jésus, M., Deng, Y., Dent, J. B., Depaoli, E. L., Dering, K., Dharani, S., Di Lorenzo, S., Drlica-Wagner, A., Dumoulin, L., Durnford, D., Dutta, B., Einfalt, L., Erb, A., Erhart, A., Essig, R., Estrada, J., Etzion, E., Exshaw, O., Favela-Perez, F., Feilitzsch, F. v., Moroni, G. Fernandez, Iachellini, N. Ferreiro, Ferriol, S., Fichtinger, S., Figueroa-Feliciano, E., Filippini, J. -B., Filosofov, D., Formaggio, J. A., Friedl, M., Fuard, S., Fuchs, D., Fuss, A., Gaïor, R., Garai, A., Garrah, C., Gascon, J., Gerbier, G., Ghaith, M., Ghete, V. M., Gift, D., Giomataris, I., Giroux, G., Giuliani, A., Gorel, P., Gorla, P., Goupy, C., Goupy, J., Goy, C., Gros, M., Gros, P., Guardincerri, Y., Guerin, C., Guidi, V., Guillaudin, O., Gupta, S., Guy, E., Harrington, P., Hauff, D., Heine, S. T., Hertel, S. A., Holland, S. E., Hong, Z., Hoppe, E. W., Hossbach, T. W., Ianigro, J. -C., Iyer, V., Jastram, A., Ješkovský, M., Jin, Y., Jochum, J., Johnston, J. P., Juillard, A., Karaivanov, D., Kashyap, V., Katsioulas, I., Kazarcev, S., Kaznacheeva, M., Kelly, F., Kilminster, B., Kinast, A., Klinkenberg, L., Kluck, H., Knights, P., Korn, Y., Kraus, H., von Krosigk, B., Kubik, A., Kurinsky, N. A., Lamblin, J., Langenkämper, A., Langrock, S., Lasserre, T., Lattaud, H., Lautridou, P., Lawson, I., Lee, S. J., Lee, M., Letessier-Selvon, A., Lhuillier, D., Li, M., Lin, Y. -T., Lubashevskiy, A., Mahapatra, R., Maludze, S., Mancuso, M., Manthos, I., Marini, L., Marnieros, S., Martin, R. D., Matalon, A., Matthews, J., Mauri, B., Mayer, D. W., Mazzolari, A., Mazzucato, E., Theenhausen, H. Meyer zu, Michielin, E., Minet, J., Mirabolfathi, N., Mirbach, K. v., Misiak, D., Mitra, P., Mocellin, J-. L., Mohanty, B., Mokina, V., Mols, J. -P., Monfardini, A., Mounier, F., Munagavalasa, S., Muraz, J. -F., Navick, X. -F., Neep, T., Neog, H., Neyrial, H., Nikolopoulos, K., Nilima, A., Nones, C., Novati, V., O'Brien, P., Oberauer, L., Olivieri, E., Olmi, M., Onillon, A., Oriol, C., Orly, A., Orrell, J. L., Ortmann, T., Overman, C. T., Pagliarone, C., Palušová, V., Pari, P., Patel, P. K., Pattavina, L., Petricca, F., Piers, A., Pinckney, H. D., Piro, M. -C., Platt, M., Poda, D., Ponomarev, D., Potzel, W., Povinec, P., Pröbst, F., Privitera, P., Pucci, F., Ramanathan, K., Real, J. -S., Redon, T., Reindl, F., Ren, R., Robert, A., Da Rocha, J., Rodrigues, D., Rogly, R., Rothe, J., Rowe, N., Rozov, S., Rozova, I., Saab, T., Saffold, N., Salagnac, T., Sander, J., Sanglard, V., Santos, D., Sarkis, Y., Savu, V., Savvidis, G., Savvidis, I., Schönert, S., Schäffner, K., Schermer, N., Schieck, J., Schmidt, B., Schmiedmayer, D., Schwertner, C., Scola, L., Settimo, M., Shevchik, Ye., Sibille, V., Sidelnik, I., Singal, A., Smida, R., Haro, M. Sofo, Soldner, T., Stachurska, J., Stahlberg, M., Stefanazzi, L., Stodolsky, L., Strandhagen, C., Strauss, R., Stutz, A., Thomas, R., Thompson, A., Tiffenberg, J., Tomei, C., Traina, M., Uemura, S., Usherov, I., Vagneron, L., Van De Pontseele, W., Fernandez, F. A. Vazquez de Sola, Vidal, M., Vignati, M., Virto, A. L., Vivier, M., Volansky, T., Wagner, V., Wagner, F., Walker, J., Ward, R., Watkins, S. L., Wex, A., Willers, M., Wilson, M. J., Winslow, L., Yakushev, E., Yu, T. -T., Zampaolo, M., Zaytsev, A., Zema, V., Zinatulina, D., and Zolotarova, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Instrumentation and Detectors
Abstract

Many low-threshold experiments observe sharply rising event rates of yet unknown origins below a few hundred eV, and larger than expected from known backgrounds. Due to the significant impact of this excess on the dark matter or neutrino sensitivity of these experiments, a collective effort has been started to share the knowledge about the individual observations. For this, the EXCESS Workshop was initiated. In its first iteration in June 2021, ten rare event search collaborations contributed to this initiative via talks and discussions. The contributing collaborations were CONNIE, CRESST, DAMIC, EDELWEISS, MINER, NEWS-G, NUCLEUS, RICOCHET, SENSEI and SuperCDMS. They presented data about their observed energy spectra and known backgrounds together with details about the respective measurements. In this paper, we summarize the presented information and give a comprehensive overview of the similarities and differences between the distinct measurements. The provided data is furthermore publicly available on the workshop's data repository together with a plotting tool for visualization., Comment: 44 pages, 20 figures; Editors: A. Fuss, M. Kaznacheeva, F. Reindl, F. Wagner; updated copyright statements and funding information

Published
2022
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13. Constraints on the electron-hole pair creation energy and Fano factor below 150 eV from Compton scattering in a Skipper-CCD

Author

Botti, A. M., Uemura, S., Moroni, G. Fernandez, Barak, L., Cababie, M., Essig, R., Etzion, E., Rodrigues, D., Saffold, N., Haro, M. Sofo, Tiffenberg, J., and Volansky, T.

Subjects
Physics - Instrumentation and Detectors, Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Experiment
Abstract

Fully-depleted thick silicon Skipper-charge-coupled devices (Skipper-CCDs) are an important technology to probe neutrino and light-dark-matter interactions due to their sub-electron read-out noise. However, the successful search for rare neutrino or dark-matter events requires the signal and all backgrounds to be fully characterized. In particular, a measurement of the electron-hole pair creation energy below 150 eV and the Fano factor are necessary for characterizing the dark matter and neutrino signals. Moreover, photons from background radiation may Compton scatter in the silicon bulk, producing events that can mimic a dark matter or neutrino signal. We present a measurement of the Compton spectrum using a Skipper-CCD and a $^{241}$Am source. With these data, we estimate the electron-hole pair-creation energy to be $\left(3.71 \pm 0.08\right)$ eV at 130 K in the energy range between 99.3 eV and 150 eV. By measuring the widths of the steps at 99.3 eV and 150 eV in the Compton spectrum, we introduce a novel technique to measure the Fano factor, setting an upper limit of 0.31 at 90% C.L. These results prove the potential of Skipper-CCDs to characterize the Compton spectrum and to measure precisely the Fano factor and electron-hole pair creation energy below 150 eV.

Published
2022

14. Publisher Correction: The asymmetry of antimatter in the proton.

Author

Dove, J, Kerns, B, McClellan, RE, Miyasaka, S, Morton, DH, Nagai, K, Prasad, S, Sanftl, F, Scott, MBC, Tadepalli, AS, Aidala, CA, Arrington, J, Ayuso, C, Barker, CL, Brown, CN, Chang, WC, Chen, A, Christian, DC, Dannowitz, BP, Daugherity, M, Diefenthaler, M, El Fassi, L, Geesaman, DF, Gilman, R, Goto, Y, Guo, L, Guo, R, Hague, TJ, Holt, RJ, Isenhower, D, Kinney, ER, Kitts, N, Klein, A, Kleinjan, DW, Kudo, Y, Leung, C, Lin, P-J, Liu, K, Liu, MX, Lorenzon, W, Makins, NCR, de Medeiros, M Mesquita, McGaughey, PL, Miyachi, Y, Mooney, I, Nakahara, K, Nakano, K, Nara, S, Peng, J-C, Puckett, AJ, Ramson, BJ, Reimer, PE, Rubin, JG, Sawada, S, Sawada, T, Shibata, T-A, Su, D, Teo, M, Tice, BG, Towell, RS, Uemura, S, Watson, S, Wang, SG, Wickes, AB, Wu, J, Xi, Z, and Ye, Z

Subjects
General Science & Technology
Abstract

In Fig. 1c of this Article, the x-axis scale was inadvertently duplicated from Fig. 1b. The original Article has been corrected online.

Published
2022

15. The Asymmetry of Antimatter in the Proton

Author

Dove, J., Kerns, B., McClellan, R. E., Miyasaka, S., Morton, D. H., Nagai, K., Prasad, S., Sanftl, F., Scott, M. B. C., Tadepalli, A. S., Aidala, C. A., Arrington, J., Ayuso, C., Barker, C. L., Brown, C. N., Chang, W. C., Chen, A., Christian, D. C., Dannowitz, B. P., Daugherity, M., Diefenthaler, M., Fassi, L. El, Geesaman, D. F., Gilman, R., Goto, Y., Guo, L., Guo, R., Hague, T. J., Holt, R. J., Isenhower, D., Kinney, E. R., Kitts, N., Klein, A., Kleinjan, D. W., Kudo, Y., Leung, C., Lin, P. -J., Liu, K., Liu, M. X., Lorenzon, W., Makins, N. C. R., de Medeiros, M. Mesquita, McGaughey, P. L., Miyachi, Y., Mooney, I., Nakahara, K., Nakano, K., Nara, S., Peng, J. -C., Puckett, A. J., Ramson, B. J., Reimer, P. E., Rubin, J. G., Sawada, S., Sawada, T., Shibata, T. -A., Su, D., Teo, M., Tice, B. G, Towell, R. S., Uemura, S., Watson, S., Wang, S. G., Wickes, A. B., Wu, J., Xi, Z., and Ye, Z.

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Experiment, Nuclear Experiment
Abstract

The fundamental building blocks of the proton, quarks and gluons, have been known for decades. However, we still have an incomplete theoretical and experimental understanding of how these particles and their dynamics give rise to the quantum bound state of the proton and its physical properties, such as for example its spin. The two up and the single down quarks that comprise the proton in the simplest picture account only for a few percent of the proton mass, the bulk of which is in the form of quark kinetic and potential energy and gluon energy from the strong force. An essential feature of this force, as described by quantum chromodynamics, is its ability to create matter-antimatter quark pairs inside the proton that exist only for a very short time. Their fleeting existence makes the antimatter quarks within protons difficult to study, but their existence is discernible in reactions where a matter-antimatter quark pair annihilates. In this picture of quark-antiquark creation by the strong force, the probability distributions as a function of momentum for the presence of up and down antimatter quarks should be nearly identical, since their masses are quite similar and small compared to the mass of the proton. In the present manuscript, we show evidence from muon pair production measurements that these distributions are significantly different, with more abundant down antimatter quarks than up antimatter quarks over a wide range of momentum. These results revive interest in several proposed mechanisms as the origin of this antimatter asymmetry in the proton that had been disfavored by the previous results and point to the future measurements that can distinguish between these mechanisms., Comment: 10 pages, 5 figures, 5 tables; Matches published version

Published
2021
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16. The asymmetry of antimatter in the proton

Author

Dove, J, Kerns, B, McClellan, RE, Miyasaka, S, Morton, DH, Nagai, K, Prasad, S, Sanftl, F, Scott, MBC, Tadepalli, AS, Aidala, CA, Arrington, J, Ayuso, C, Barker, CL, Brown, CN, Chang, WC, Chen, A, Christian, DC, Dannowitz, BP, Daugherity, M, Diefenthaler, M, El Fassi, L, Geesaman, DF, Gilman, R, Goto, Y, Guo, L, Guo, R, Hague, TJ, Holt, RJ, Isenhower, D, Kinney, ER, Kitts, N, Klein, A, Kleinjan, DW, Kudo, Y, Leung, C, Lin, P-J, Liu, K, Liu, MX, Lorenzon, W, Makins, NCR, de Medeiros, M Mesquita, McGaughey, PL, Miyachi, Y, Mooney, I, Nakahara, K, Nakano, K, Nara, S, Peng, J-C, Puckett, AJ, Ramson, BJ, Reimer, PE, Rubin, JG, Sawada, S, Sawada, T, Shibata, T-A, Su, D, Teo, M, Tice, BG, Towell, RS, Uemura, S, Watson, S, Wang, SG, Wickes, AB, Wu, J, Xi, Z, and Ye, Z

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Quantum Physics, Physical Sciences, General Science & Technology
Abstract

The fundamental building blocks of the proton-quarks and gluons-have been known for decades. However, we still have an incomplete theoretical and experimental understanding of how these particles and their dynamics give rise to the quantum bound state of the proton and its physical properties, such as its spin1. The two up quarks and the single down quark that comprise the proton in the simplest picture account only for a few per cent of the proton mass, the bulk of which is in the form of quark kinetic and potential energy and gluon energy from the strong force2. An essential feature of this force, as described by quantum chromodynamics, is its ability to create matter-antimatter quark pairs inside the proton that exist only for a very short time. Their fleeting existence makes the antimatter quarks within protons difficult to study, but their existence is discernible in reactions in which a matter-antimatter quark pair annihilates. In this picture of quark-antiquark creation by the strong force, the probability distributions as a function of momentum for the presence of up and down antimatter quarks should be nearly identical, given that their masses are very similar and small compared to the mass of the proton3. Here we provide evidence from muon pair production measurements that these distributions are considerably different, with more abundant down antimatter quarks than up antimatter quarks over a wide range of momenta. These results are expected to revive interest in several proposed mechanisms for the origin of this antimatter asymmetry in the proton that had been disfavoured by previous results4, and point to future measurements that can distinguish between these mechanisms.

Published
2021

17. Sequentially addressable dielectrophoretic array for high-throughput sorting of large-volume biological compartments.

Author

Isozaki, A, Nakagawa, Y, Loo, MH, Shibata, Y, Tanaka, N, Setyaningrum, DL, Park, J-W, Shirasaki, Y, Mikami, H, Huang, D, Tsoi, H, Riche, CT, Ota, T, Miwa, H, Kanda, Y, Ito, T, Yamada, K, Iwata, O, Suzuki, K, Ohnuki, S, Ohya, Y, Kato, Y, Hasunuma, T, Matsusaka, S, Yamagishi, M, Yazawa, M, Uemura, S, Nagasawa, K, Watarai, H, Di Carlo, D, and Goda, K

Abstract

Droplet microfluidics has become a powerful tool in precision medicine, green biotechnology, and cell therapy for single-cell analysis and selection by virtue of its ability to effectively confine cells. However, there remains a fundamental trade-off between droplet volume and sorting throughput, limiting the advantages of droplet microfluidics to small droplets (

Published
2020

18. Search for a Dark Photon in Electro-Produced $e^{+}e^{-}$ Pairs with the Heavy Photon Search Experiment at JLab

Author

Adrian, P. H., Baltzell, N. A., Battaglieri, M., Bondí, M., Boyarinov, S., Bueltmann, S., Burkert, V. D., Calvo, D., Carpinelli, M., Celentano, A., Charles, G., Colaneri, L., Cooper, W., Cuevas, C., D'Angelo, A., Dashyan, N., De Napoli, M., De Vita, R., Deur, A., Dupre, R., Egiyan, H., Elouadrhiri, L., Essig, R., Fadeyev, V., Field, C., Filippi, A., Freyberger, A., Garçon, M., Gevorgyan, N., Girod, F. X., Graf, N., Graham, M., Griffioen, K. A., Grillo, A., Guidal, M., Herbst, R., Holtrop, M., Jaros, J., Kalicy, G., Khandaker, M., Kubarovsky, V., Leonora, E., Livingston, K., Maruyama, T., McCarty, K., McCormick, J., McKinnon, B., Moffeit, K., Moreno, O., Camacho, C. Munoz, Nelson, T., Niccolai, S., Odian, A., Oriunno, M., Osipenko, M., Paremuzyan, R., Paul, S., Randazzo, N., Raydo, B., Reese, B., Rizzo, A., Schuster, P., Sharabian, Y. G., Simi, G., Simonyan, A., Sipala, V., Sokhan, D., Solt, M., Stepanyan, S., Szumila-Vance, H., Toro, N., Uemura, S., Ungaro, M., Voskanyan, H., Weinstein, L. B., Wojtsekhowski, B., and Yale, B.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

The Heavy Photon Search experiment took its first data in a 2015 engineering run using a 1.056 GeV, 50 nA electron beam provided by CEBAF at the Thomas Jefferson National Accelerator Facility, searching for an electro-produced dark photon. Using 1.7 days (1170 nb$^{-1}$) of data, a search for a resonance in the $e^{+}e^{-}$ invariant mass distribution between 19 and 81 MeV/c$^2$ showed no evidence of dark photon decays above the large QED background, confirming earlier searches and demonstrating the full functionality of the experiment. Upper limits on the square of the coupling of the dark photon to the Standard Model photon are set at the level of 6$\times$10$^{-6}$. In addition, a search for displaced dark photon decays did not rule out any territory but resulted in a reliable analysis procedure that will probe hitherto unexplored parameter space with future, higher luminosity runs., Comment: 8 pages, Proceedings of the 39th International Conference on High Energy Physics (ICHEP 2018), 4-11 July, 2018, Seoul, Korea

Published
2018

19. Superconductivity in a unique type of copper oxide

Author

Li, W. M., Zhao, J. F., Cao, L. P., Hu, Z., Huang, Q. Z., Wang, X. C., Liu, Y., Zhao, G. Q., Zhang, J., Liu, Q. Q., Yu, R. Z., Wu, Y. W. Long H., Lin, H. J., Chen, C. T., Li, Z., Gong, Z. Z., Guguchia, Z., Kim, J. S., Stewart, G. R., Uchida, Y. J. Uemura. S., and Jin, C. Q

Subjects
Condensed Matter - Superconductivity, Condensed Matter - Materials Science, Condensed Matter - Strongly Correlated Electrons
Abstract

The mechanism of superconductivity in cuprates remains one of the big challenges of condensed matter physics.High Tc cuprates crystallize into layered perovskite structure featuring copper oxygen octahedral coordination. Due to the Jahn Teller effect in combination with the strong static Coulomb interaction, the octahedra in high Tc cuprates are elongated along the c axis, leading to a 3dx2-y2 orbital at the top of the band structure wherein the doped holes reside.This scenario gives rise to two dimensional characteristics in high Tc cuprates that favor d wave pairing symmetry. Here we report superconductivity in a cuprate Ba2CuO4-y wherein the local octahedron is in a very exceptional compressed version.The Ba2CuO4-y compound was synthesized at high pressure at high temperatures, and shows bulk superconductivity with critical temperature Tc above 70 K at ambient conditions. This superconducting transition temperature is more than 30 K higher than the Tc for the isostructural counterparts based on classical La2CuO4. X-ray absorption measurements indicate the heavily doped nature of the Ba2CuO4-y superconductor. In compressed octahedron the 3d3z2-r2 orbital will be lifted above the 3dx2-y2 orbital, leading to significant three dimensional nature in addition to the conventional 3dx2-y2 orbital. This work sheds important new light on advancing our comprehensive understanding of the superconducting mechanism of high Tc in cuprate materials., Comment: Total 28 pages incuding 9 Figures

Published
2018
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20. The SeaQuest spectrometer at Fermilab

Author

Aidala, CA, Arrington, JR, Ayuso, C, Bowen, BM, Bowen, ML, Bowling, KL, Brown, AW, Brown, CN, Byrd, R, Carlisle, RE, Chang, T, Chang, WC, Chen, A, Chen, JY, Christian, DC, Chu, X, Dannowitz, BP, Daugherity, M, Diefenthaler, M, Dove, J, Durandet, C, El Fassi, L, Erdos, E, Fox, DM, Geesaman, DF, Gilman, R, Goto, Y, Guo, L, Guo, R, Hague, T, Hicks, CR, Holt, RJ, Isenhower, D, Jiang, X, Katich, JM, Kerns, BM, Kinney, ER, Kitts, ND, Klein, A, Kleinjan, D, Kras, J, Kudo, Y, Lin, PJ, Liu, D, Liu, K, Liu, MX, Lorenzon, W, Makins, NCR, Martinez, JD, McClellan, RE, McDonald, B, McGaughey, PL, McNease, SE, Medeiros, MM, Miller, B, Miller, AJ, Miyasaka, S, Miyachi, Y, Mooney, IA, Morton, DH, Nadim, B, Nagai, K, Nakahara, K, Nakano, K, Nara, S, Obata, S, Peng, JC, Prasad, S, Puckett, AJR, Ramson, BJ, Raymond, RS, Reimer, PE, Rubin, JG, Salinas, R, Sanftl, F, Sawada, S, Sawada, T, Scott, MBC, Selensky, LE, Shibata, TA, Shiu, S, Su, D, Tadepalli, AS, Teo, M, Tice, BG, Towell, CL, Towell, RS, Uemura, S, Wang, SG, Watson, S, White, N, Wickes, AB, Wood, MR, Wu, J, Xi, Z, Ye, Z, and Yin, Y

Subjects
SeaQuest, E906, Drell-Yan, Spectrometer, J/psi, Muon, physics.ins-det, nucl-ex, Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Other Physical Sciences
Abstract

The SeaQuest spectrometer at Fermilab was designed to detect oppositely-charged pairs of muons (dimuons) produced by interactions between a 120 GeV proton beam and liquid hydrogen, liquid deuterium and solid nuclear targets. The primary physics program uses the Drell–Yan process to probe antiquark distributions in the target nucleon. The spectrometer consists of a target system, two dipole magnets and four detector stations. The upstream magnet is a closed-aperture solid iron magnet which also serves as the beam dump, while the second magnet is an open aperture magnet. Each of the detector stations consists of scintillator hodoscopes and a high-resolution tracking device. The FPGA-based trigger compares the hodoscope signals to a set of pre-programmed roads to determine if the event contains oppositely-signed, high-mass muon pairs.

Published
2019

22. The SeaQuest Spectrometer at Fermilab

Author

SeaQuest Collaboration, Aidala, C. A., Arrington, J. R., Ayuso, C., Bowen, B. M., Bowen, M. L., Bowling, K. L., Brown, A. W., Brown, C. N., Byrd, R., Carlisle, R. E., Chang, T., Chang, W. -C., Chen, A., Chen, J. -Y., Christian, D. C., Chu, X., Dannowitz, B. P., Daugherity, M., Diefenthaler, M., Dove, J., Durandet, C., Fassi, L. El, Erdos, E., Fox, D. M., Geesaman, D. F., Gilman, R., Goto, Y., Guo, L., Guo, R., Hague, T., Hicks, C. R., Holt, R. J., Isenhower, D., Jiang, X., Katich, J. M., Kerns, B. M., Kinney, E. R., Kitts, N. D., Klein, A., Kleinjan, D., Kras, J., Kudo, Y., Lin, P. -J., Liu, D., Liu, K., Liu, M. X., Lorenzon, W., Makins, N. C. R., Martinez, J. D., McClellan, R. E., McDonald, B., McGaughey, P. L., McNease, S. E., Medeiros, M. M., Miller, B., Miller, A. J., Miyasaka, S., Miyachi, Y., Mooney, I. A., Morton, D. H., Nadim, B., Nagai, K., Nakahara, K., Nakano, K., Nara, S., Obata, S., Peng, J. C., Prasad, S., Puckett, A. J. R., Ramson, B. J., Raymond, R. S., Reimer, P. E., Rubin, J. G., Salinas, R., Sanftl, F., Sawada, S., Sawada, T., Scott, M. B. C., Selensky, L. E., Shibata, T. -A., Shiu, S., Su, D., Tadepalli, A. S., Teo, M., Tice, B. G., Towell, C. L., Towell, R. S., Uemura, S., Wang, S. G., Watson, S., White, N., Wickes, A. B., Wood, M. R., Wu, J., Xi, Z., Ye, Z., and Yin, Y.

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

The SeaQuest spectrometer at Fermilab was designed to detect oppositely-charged pairs of muons (dimuons) produced by interactions between a 120 GeV proton beam and liquid hydrogen, liquid deuterium and solid nuclear targets. The primary physics program uses the Drell-Yan process to probe antiquark distributions in the target nucleon. The spectrometer consists of a target system, two dipole magnets and four detector stations. The upstream magnet is a closed-aperture solid iron magnet which also serves as the beam dump, while the second magnet is an open aperture magnet. Each of the detector stations consists of scintillator hodoscopes and a high-resolution tracking device. The FPGA-based trigger compares the hodoscope signals to a set of pre-programmed roads to determine if the event contains oppositely-signed, high-mass muon pairs.

Published
2017

23. The Heavy Photon Search beamline and its performance

Author

Baltzell, N., Egiyan, H., Ehrhart, M., Field, C., Freyberger, A., Girod, F. -X., Holtrop, M., Jaros, J., Kalicy, G., Maruyama, T., McKinnon, B., Moffeit, K., Nelson, T., Odian, A., Oriunno, M., Paremuzyan, R., Stepanyan, S., Tiefenback, M., Uemura, S., Ungaro, M., and Vance, H.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment, Nuclear Experiment
Abstract

The Heavy Photon Search (HPS) is an experiment to search for a hidden sector photon, aka a heavy photon or dark photon, in fixed target electroproduction at the Thomas Jefferson National Accelerator Facility (JLab). The HPS experiment searches for the e$^+$e$^-$ decay of the heavy photon with bump hunt and detached vertex strategies using a compact, large acceptance forward spectrometer, consisting of a silicon microstrip detector (SVT) for tracking and vertexing, and a PbWO$_4$ electromagnetic calorimeter for energy measurement and fast triggering. To achieve large acceptance and good vertexing resolution, the first layer of silicon detectors is placed just 10 cm downstream of the target with the sensor edges only 500 $\mu$m above and below the beam. Placing the SVT in such close proximity to the beam puts stringent requirements on the beam profile and beam position stability. As part of an approved engineering run, HPS took data in 2015 and 2016 at 1.05 GeV and 2.3 GeV beam energies, respectively. This paper describes the beam line and its performance during that data taking.

Published
2016
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24. Diagnostic Accuracy of Diastolic Fractional Flow Reserve for Functional Evaluation of Coronary Stenosis: DIASTOLE Study

Author

Shiono, Y., Katayama, Y., Hironori, K., Kubo, T., Akasaka, T., Tanaka, N., Yamashita, J., Fujita, H., Matsuo, A., Matsuo, H., Kawase, Y., Kawamura, I., Kakuta, T., Hoshino, M., Sugano, T., Takashima, H., Amano, T., Yokoi, H., Yamamoto, Y., Nozaki, Y., Machida, M., Kobori, M., Kikuchi, T., Ohira, H., Yoshino, H., Ishiguro, H., Wakabayashi, Y., Kondo, T., Terai, H., Suwa, T., Kimura, T., Kawajiri, T., Hirohata, A., Uemura, S., Neishi, Y., Sakamoto, T., Yamada, M., Okeie, K., Hishikari, K., Oguri, M., Uetani, T., Saegusa, T., Yamamoto, F., Shiono, Yasutsugu, Matsuo, Hitoshi, Fujita, Hiroshi, Tanaka, Nobuhiro, Ogasawara, Yasuo, Kawamura, Itta, Katayama, Yosuke, Matsuo, Akiko, Kawase, Yoshiaki, Kakuta, Tsunekazu, Takashima, Hiroaki, Yokoi, Hiroyoshi, Ohira, Hiroshi, Suwa, Satoru, Oguri, Mitsutoshi, Yamamoto, Fumi, Kubo, Takashi, and Akasaka, Takashi

Published
2021
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25. Nonreciprocal magnon propagation in a noncentrosymmetric ferromagnet

Author

Iguchi, Y., Uemura, S., Ueno, K., and Onose, Y.

Subjects
Condensed Matter - Materials Science, Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

Relativistic spin-orbit interaction drastically modifies electronic band and endows emergent functionalities. One of the example is the Rashba effect. In noncentrosymmetric systems such as interface and polar materials, the electronic band is spin-splitted depending on the momentum direction owing to the spin-orbit interaction, which is useful for the electric manipulation of spin current. Similar relativistic band-modification is also emergent for spin wave (magnon) in magnetic materials. The asymmetric magnon band dispersion induced by the Dzyaloshinskii-Moriya interaction, which is antisymmetric exchange interaction originating from the spin-orbit interaction, is theoretically expected, and experimentally observed recently in noncentrosymmetric ferromagnets. Here, we demonstrate that the nonreciprocal microwave response can be induced by the asymmetric magnon band in a noncentrosymmetric ferrimagnet LiFe$_5$O$_8$. This result may pave a new path to designing magnonic device based on the relativistic band engineering., Comment: 15 pages, 8 figures

Published
2015
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26. The SeaQuest spectrometer at Fermilab

Author

Aidala, C.A., Arrington, J.R., Ayuso, C., Bowen, B.M., Bowen, M.L., Bowling, K.L., Brown, A.W., Brown, C.N., Byrd, R., Carlisle, R.E., Chang, T., Chang, W.-C., Chen, A., Chen, J.-Y., Christian, D.C., Chu, X., Dannowitz, B.P., Daugherity, M., Diefenthaler, M., Dove, J., Durandet, C., El Fassi, L., Erdos, E., Fox, D.M., Geesaman, D.F., Gilman, R., Goto, Y., Guo, L., Guo, R., Hague, T., Hicks, C.R., Holt, R.J., Isenhower, D., Jiang, X., Katich, J.M., Kerns, B.M., Kinney, E.R., Kitts, N.D., Klein, A., Kleinjan, D., Kras, J., Kudo, Y., Lin, P.-J., Liu, D., Liu, K., Liu, M.X., Lorenzon, W., Makins, N.C.R., Martinez, J.D., McClellan, R.E., McDonald, B., McGaughey, P.L., McNease, S.E., Medeiros, M.M., Miller, B., Miller, A.J., Miyasaka, S., Miyachi, Y., Mooney, I.A., Morton, D.H., Nadim, B., Nagai, K., Nakahara, K., Nakano, K., Nara, S., Obata, S., Peng, J.C., Prasad, S., Puckett, A.J.R., Ramson, B.J., Raymond, R.S., Reimer, P.E., Rubin, J.G., Salinas, R., Sanftl, F., Sawada, S., Sawada, T., Scott, M.B.C., Selensky, L.E., Shibata, T.-A., Shiu, S., Su, D., Tadepalli, A.S., Teo, M., Tice, B.G., Towell, C.L., Towell, R.S., Uemura, S., Wang, S.G., Watson, S., White, N., Wickes, A.B., Wood, M.R., Wu, J., Xi, Z., Ye, Z., and Yin, Y.

Published
2019
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27. New evaluation of trunk movement and balance during walking in COPD patients by a triaxial accelerometer

Author

Terui Y, Iwakura M, Suto E, Kawagoshi A, Sugawara K, Takahashi H, Hasegawa K, Uemura S, Satake M, and Shioya T

Subjects
Chronic obstructive pulmonary disease, gait, tri-axial accelerometer, Lissajou index, balance, Diseases of the respiratory system, RC705-779
Abstract

Yoshino Terui,1 Masahiro Iwakura,1,2 Eriko Suto,3 Atsuyoshi Kawagoshi,2 Keiyu Sugawara,2 Hitomi Takahashi,2 Kouichi Hasegawa,3 Sachiko Uemura,1 Masahiro Satake,1 Takanobu Shioya1,4 1Department of Physical Therapy, Akita University Graduate School of Health Sciences, Akita, Japan; 2Department of Rehabilitation Medicine, Akita City Hospital, Akita, Japan; 3Department of Rehabilitation, Akita Prefectural Center for Rehabilitation and Psychiatric Medicine, Daisen, Japan; 4Geriatric Health Services Facility Nikonikoen, Akita, Japan Background: Individuals with COPD may experience ambulatory difficulty due to both effort intolerance arising from respiratory dysfunction and impaired balance control during walking. However, the trunk movement during walking has not been evaluated or adjusted for patients with COPD. The Lissajous index (LI) visually and numerically evaluates the left–right symmetry of the trunk movement during walking and is useful in clinical practice. In COPD patients, the LI is used as an indicator of the left–right symmetry of the trunk during walking. Here, we used the LI to evaluate the symmetry of COPD patients based on bilateral differences in mediolateral and vertical accelerations, and we investigated the correlation between the patients’ symmetry evaluation results and their physical function.Patients and methods: Sixteen stable COPD patients (all males; age 71.3±9.2 years) and 26 healthy control subjects (15 males; age 68.2±6.9 years) participated in this study. They performed the 10-minute walk test at a comfortable gait speed wearing a triaxial accelerometer, and we measured their trunk acceleration for the evaluation of symmetry. Motor functions were also evaluated in the patients with COPD.Results: The average mediolateral bilateral difference and LI values of the COPD patients were significantly larger than those of the healthy subjects. The COPD patients’ LI values were significantly correlated with their static balance.Conclusion: The LI measured using a triaxial accelerometer during walking is useful in balance assessments of patients with COPD. Keywords: chronic obstructive pulmonary disease, gait, accelerometer, Lissajou index, balance

Published
2018

28. Orexin/hypocretin levels in the cerebrospinal fluid and characteristics of patients with myotonic dystrophy type 1 with excessive daytime sleepiness

Author

Omori Y, Kanbayashi T, Imanishi A, Tsutsui K, Sagawa Y, Kikuchi YS, Takeshima M, Yoshizawa K, Uemura S, and Shimizu T

Subjects
myotonic dystrophy type 1, orexin, narcolepsy, sleep-onset rapid eye movement periods, muscleblind-like protein, Neurosciences. Biological psychiatry. Neuropsychiatry, RC321-571, Neurology. Diseases of the nervous system, RC346-429
Abstract

Yuki Omori,1 Takashi Kanbayashi,1,2 Aya Imanishi,1 Ko Tsutsui,1 Yohei Sagawa,1 Yuka S Kikuchi,1 Masahiro Takeshima,1 Kazuhisa Yoshizawa,1 Sachiko Uemura,3 Tetsuo Shimizu1,2 1Department of Neuropsychiatry, Akita University Graduate School of Medicine, Akita, Japan; 2International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Japan; 3Department of Physical Therapy, Akita University Graduate School of Health Sciences, Akita, Japan Purpose: Myotonic dystrophy type 1 (DM1) is often characterized by excessive daytime sleepiness (EDS) and sleep-onset rapid eye movement periods caused by muscleblind-like protein 2. The EDS tends to persist even after treatment of sleep apnea. We measured the cerebrospinal fluid (CSF) orexin levels in DM1 patients with EDS and compared the clinical characteristics with narcolepsy type 1 and idiopathic hypersomnia (IHS) patients.Patients and methods: We measured the CSF orexin levels in 17 DM1 patients with EDS and evaluated subjective sleepiness using the Epworth Sleepiness Scale (ESS), objective sleepiness using mean sleep latency (MSL), and sleep apnea using apnea-hypopnea index (AHI). We compared the ESS scores and MSL between decreased (≤200 pg/mL) and normal (>200 pg/mL) CSF orexin group in DM1 patients. Furthermore, we compared the CSF orexin levels, ESS scores, MSL, and AHI among patients with DM1, narcolepsy type 1 (n=46), and IHS (n=30).Results: Seven DM1 patients showed decreased CSF orexin levels. There were significant differences in the ESS scores and MSL between decreased and normal CSF orexin groups in DM1 patients. The ESS scores showed no significant difference among patients with DM1, narcolepsy type 1, and IHS. The MSL in DM1 and IHS patients were significantly higher than narcolepsy type 1 patients (p=0.01, p

Published
2018

29. Searching for prompt and long-lived dark photons in electroproduced e+e− pairs with the heavy photon search experiment at JLab

Author

Adrian, P. H., primary, Baltzell, N. A., additional, Battaglieri, M., additional, Bondí, M., additional, Boyarinov, S., additional, Bravo, C., additional, Bueltmann, S., additional, Butti, P., additional, Burkert, V. D., additional, Calvo, D., additional, Cao, T., additional, Carpinelli, M., additional, Celentano, A., additional, Charles, G., additional, Colaneri, L., additional, Cooper, W., additional, Crowe, B., additional, Cuevas, C., additional, D’Angelo, A., additional, Dashyan, N., additional, De Napoli, M., additional, De Vita, R., additional, Deur, A., additional, Diamond, M., additional, Dupre, R., additional, Egiyan, H., additional, Elouadrhiri, L., additional, Essig, R., additional, Fadeyev, V., additional, Field, C., additional, Filippi, A., additional, Freyberger, A., additional, Garçon, M., additional, Gevorgyan, N., additional, Girod, F. X., additional, Graf, N., additional, Graham, M., additional, Griffioen, K. A., additional, Grillo, A., additional, Guidal, M., additional, Herbst, R., additional, Holtrop, M., additional, Jaros, J., additional, Johnson, R. P., additional, Kalicy, G., additional, Khandaker, M., additional, Kubarovsky, V., additional, Leonora, E., additional, Livingston, K., additional, Marsicano, L., additional, Maruyama, T., additional, McCarty, S., additional, McCormick, J., additional, McKinnon, B., additional, Moffeit, K., additional, Moreno, O., additional, Munoz Camacho, C., additional, Nelson, T., additional, Niccolai, S., additional, Odian, A., additional, Oriunno, M., additional, Osipenko, M., additional, Paremuzyan, R., additional, Paul, S., additional, Randazzo, N., additional, Raydo, B., additional, Reese, B., additional, Rizzo, A., additional, Schuster, P., additional, Sharabian, Y. G., additional, Simi, G., additional, Simonyan, A., additional, Sipala, V., additional, Spellman, A., additional, Sokhan, D., additional, Solt, M., additional, Stepanyan, S., additional, Szumila-Vance, H., additional, Toro, N., additional, Uemura, S., additional, Ungaro, M., additional, Voskanyan, H., additional, Weinstein, L. B., additional, and Wojtsekhowski, B., additional

Published
2023
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30. The Heavy Photon Search beamline and its performance

Author

Baltzell, N., Egiyan, H., Ehrhart, M., Field, C., Freyberger, A., Girod, F.-X., Holtrop, M., Jaros, J., Kalicy, G., Maruyama, T., McKinnon, B., Moffeit, K., Nelson, T., Odian, A., Oriunno, M., Paremuzyan, R., Stepanyan, S., Tiefenback, M., Uemura, S., Ungaro, M., and Vance, H.

Published
2017
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33. Implementing machine learning methods on QICK hardware for qubit readout &amp; control

Author

Yesilyurt, O., primary, Campos, J., additional, Di Guglielmo, G., additional, Boltasseva, A., additional, Bowring, D., additional, Cancelo, G., additional, Du, B., additional, Fahim, F., additional, Herwig, C., additional, Ma, R., additional, Perdue, G., additional, Shalaev, V., additional, Stefanazzi, L., additional, Tran, N., additional, and Uemura, S., additional

Published
2023
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38. The Heavy Photon Search test detector

Author

Battaglieri, M., Boyarinov, S., Bueltmann, S., Burkert, V., Celentano, A., Charles, G., Cooper, W., Cuevas, C., Dashyan, N., DeVita, R., Desnault, C., Deur, A., Egiyan, H., Elouadrhiri, L., Essig, R., Fadeyev, V., Field, C., Freyberger, A., Gershtein, Y., Gevorgyan, N., Girod, F.-X., Graf, N., Graham, M., Griffioen, K., Grillo, A., Guidal, M., Haller, G., Hansson Adrian, P., Herbst, R., Holtrop, M., Jaros, J., Kaneta, S., Khandaker, M., Kubarovsky, A., Kubarovsky, V., Maruyama, T., McCormick, J., Moffeit, K., Moreno, O., Neal, H., Nelson, T., Niccolai, S., Odian, A., Oriunno, M., Paremuzyan, R., Partridge, R., Phillips, S.K., Rauly, E., Raydo, B., Reichert, J., Rindel, E., Rosier, P., Salgado, C., Schuster, P., Sharabian, Y., Sokhan, D., Stepanyan, S., Toro, N., Uemura, S., Ungaro, M., Voskanyan, H., Walz, D., Weinstein, L.B., and Wojtsekhowski, B.

Published
2015
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39. Dynamic hyperinflation and dyspnea during the 6-minute walk test in stable chronic obstructive pulmonary disease patients

Author

Satake M, Shioya T, Uemura S, Takahashi H, Sugawara K, Kasai C, Kiyokawa N, Watanabe T, Sato S, and Kawagoshi A

Subjects
Diseases of the respiratory system, RC705-779
Abstract

Masahiro Satake,1 Takanobu Shioya,1 Sachiko Uemura,1 Hitomi Takahashi,2 Keiyu Sugawara,2 Chikage Kasai,2 Noritaka Kiyokawa,2 Toru Watanabe,2 Sayaka Sato,2 Atsuyoshi Kawagoshi2 1Department of Physical Therapy, Akita University Graduate School of Health Sciences, Akita, Japan; 2Department of Rehabilitation, Akita City Hospital, Akita, Japan Abstract: The purpose of this study was to investigate the relationship between dynamic hyperinflation and dyspnea and to clarify the characteristics of dyspnea during the 6-minute walk test (6MWT) in chronic obstructive pulmonary disease patients. Twenty-three subjects with stable moderate chronic obstructive pulmonary disease (age 73.8±5.8 years, all male) took part in this study. During the 6MWT, ventilatory and gas exchange parameters were measured using a portable respiratory gas analysis system. Dyspnea and oxygen saturation were recorded at the end of every 2 minute period during the test. There was a significant decrease in inspiratory capacity during the 6MWT. This suggested that dynamic hyperinflation had occurred. Dyspnea showed a significant linear increase, and there was a significant negative correlation with inspiratory capacity. It was suggested that one of the reasons that dyspnea developed during the 6MWT was the dynamic hyperinflation. Even though the tidal volume increased little after 2 minutes, dyspnea increased linearly to the end of the 6MWT. These results suggest that the mechanisms generating dyspnea during the 6MWT were the sense of respiratory effort at an early stage and then the mismatch between central motor command output and respiratory system movement. Keywords: field walking test, chronic respiratory diseases, respiratory gas analysis, inspiratory capacity, IC, inspiratory reserve volume, IRV, Borg CR-10 scale, COPD

Published
2015

40. High and low negative pressure suction techniques in EUS-guided fine-needle tissue acquisition by using 25-gauge needles: a multicenter, prospective, randomized, controlled trial

Author

Kawakami, H., Kudo, T., Kuwatani, M., Eto, K., Abe, Y., Kawahata, S., Sakamoto, N., Mitsuhashi, T., Matsuno, Y., Marukawa, K., Moriya, J., Oba, K., Hayashi, T., Ishiwatari, Y., Ono, M., Hasegawa, T., Nakanishi, K., Ogino, J., Sanuma, H., Yasuda, I., Doi, S., Toda, K., Yamauchi, T., Kawaguchi, J., Uemura, S., Hirose, Y., Mukai, T., Nakashima, M., Yamada, T., Etori, M., Inoue, T., Yamada, R., Takei, Y., Shiraishi, T., Yoneda, M., Katanuma, A., Maguchi, H., Yane, K., Shinohara, T., Sugimura, T., Nakajima, Y., Kawakubo, K., Isayama, H., Nakai, Y., Yamamoto, N., Tanaka, M., Kudo, Taiki, Kawakami, Hiroshi, Hayashi, Tsuyoshi, Yasuda, Ichiro, Mukai, Tsuyoshi, Inoue, Hiroyuki, Katanuma, Akio, Kawakubo, Kazumichi, Ishiwatari, Hirotoshi, Doi, Shinpei, Yamada, Reiko, Maguchi, Hiroyuki, Isayama, Hiroyuki, Mitsuhashi, Tomoko, and Sakamoto, Naoya

Published
2014
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43. Fermilab Test Beam Facility Annual Report (FY2019)

Author

Rominsky, M., primary, Schmidt, E., additional, Niner, E., additional, Uplegger, L., additional, Rivera, R., additional, Angelico, E., additional, Adams, B., additional, Clark, F., additional, Elagin, A., additional, Frisch, H., additional, Popecki, M., additional, Spieglan, E., additional, Sousa, A., additional, Wallbank, M., additional, Sergeeva, M., additional, Neff, D., additional, Chan, B., additional, Tsai, O., additional, Kisilev, A., additional, Lin, T., additional, Chen, D., additional, Kapukchyan, D., additional, Goto, Y., additional, Miyachi, Y., additional, Nukazava, G., additional, Ehrlich, R., additional, Boi, S., additional, Nakamura, Koji, additional, Ono, Shun, additional, Yamada, Miho, additional, Tsuboyama, Toru, additional, Hara, Kazuhiko, additional, Anderson, T., additional, Arenton, M., additional, Barria, P., additional, Benaglia, A., additional, Cerri, O., additional, Cox, B., additional, Dutta, I., additional, Hermann, M., additional, Joyce, M., additional, Karaman, G., additional, Kopp, G., additional, Lu, N., additional, Lucchini, M., additional, Mao, J., additional, Mohammadi, A., additional, Paredes, L., additional, Pena, C., additional, Rude, C., additional, Tannenwald, B., additional, Wang, C., additional, White, S., additional, Xie, S., additional, Aune, S., additional, Azmoun, B., additional, Fan, W., additional, Kiselev, A., additional, Mandjavidze, I., additional, Perez-Lara, C., additional, Purschke, M., additional, Revolle, M., additional, Vandenbroucke, M., additional, Woody, C., additional, Dean, C., additional, Durham, M., additional, van Hecke, H., additional, Kunde, G., additional, He, X., additional, Huang, J., additional, Li, X., additional, Li, Z., additional, Lim, S., additional, Liu, M., additional, Morales, Y., additional, O'Shaughnessy, C., additional, Raymer, A., additional, da Silva, C., additional, Sondheim, W., additional, Sun, X., additional, Taylor, M., additional, Tkatchev, A., additional, Uemura, S., additional, Chiu, M., additional, May, E., additional, Nelson, S., additional, Scarlett, C., additional, Xie, J., additional, Hemmick, T., additional, Delmelt, K., additional, Sakaguchi, T., additional, Freeman, J., additional, Lincoln, D., additional, Uzunyan, S., additional, Blusk, S., additional, Wang, J., additional, Ely, S., additional, Kim, K., additional, Wilkinson, M., additional, Nguyen, D., additional, Hanson, G., additional, Frankenthal, A., additional, Thom, J., additional, Hassani, A., additional, Wagner, S., additional, Dittmer, S., additional, Mills, C., additional, Roy, T., additional, Yoo, J., additional, Suarez, C., additional, Castaneda, J., additional, Bentele, B., additional, Bylsma, B., additional, Cardwell, B., additional, Hill, C., additional, Gonzalez, R., additional, Guerrero, A., additional, Norberg, S., additional, Thieman, J., additional, Jones, M., additional, Cheng, T., additional, Acharya, H. Acharya, additional, Moore, L., additional, Spanier, S., additional, Akiba, Yasuyuki, additional, Cheng, Kai-Yu, additional, Desmond, Edmond, additional, Hatchiya, Takashi, additional, Haggerty, John, additional, Hasegawa, Shoichi, additional, Kondo, Takashi, additional, Kuo, Chia-Ming, additional, Nakagawa, Itaru, additional, Nouicer, Rachid, additional, Shih, Cheng-Wei, additional, Suzuki, Ayaka, additional, Todoroki, Takahito, additional, Xiao, Rui, additional, Xie, Wei, additional, Murray, M., additional, Nickels, M., additional, Wang, Q., additional, Longo, R., additional, Lantz, C., additional, Zhang, T., additional, Kulinich, Y., additional, Yang, S., additional, Preins, Sean, additional, Mankolli, A., additional, Bryant, J., additional, Karanam, R., additional, Citron, Z., additional, Adams, E., additional, Metcalfe, J., additional, Benoit, M., additional, Bhopatkar, V., additional, Islam, W., additional, Jadhav, M., additional, Lambert, J., additional, Muse, J., additional, Nagasamudram, S., additional, Shrestha, S., additional, Wilbern, D., additional, Wu, W., additional, Xu, L., additional, Apresyan, A., additional, Rogan, C., additional, Obertino, M., additional, Heller, R., additional, Minafra, N., additional, Ovcharova, A., additional, Hussain, M., additional, Wamorkar, T., additional, Siviero, F., additional, Isodori, T., additional, Lazarovitz, M., additional, Abreu, A., additional, Koziol, A., additional, and McGraw, D., additional

Published
2019
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46. Optical coherence tomography in coronary atherosclerosis assessment and intervention

Author

Araki, M., Park, S.J., Dauerman, H.L., Uemura, S., Kim, J.S., Mario, C. di, Johnson, T.W., Guagliumi, G., Kastrati, A., Joner, M., Holm, N.R., Alfonso, F., Wijns, W., Adriaenssens, T., Nef, H., Rioufol, G., Amabile, N., Souteyrand, G., Meneveau, N., Gerbaud, E., Opolski, M.P., Gonzalo, N., Tearney, G.J., Bouma, B., Aguirre, A.D., Mintz, G.S., Stone, G.W., Bourantas, C.V., Raber, L., Gili, S., Mizuno, K., Kimura, S., Shinke, T., Hong, M.K., Jang, Y., Cho, J.M., Yan, B.P., Porto, I., Niccoli, G., Montone, R.A., Thondapu, V., Papafaklis, M.I., Michalis, L.K., Reynolds, H., Saw, J., Libby, P., Weisz, G., Iannaccone, M., Gori, T., Toutouzas, K., Yonetsu, T., Minami, Y., Takano, M., Raffel, O.C., Kurihara, O., Soeda, T., Sugiyama, T., Kim, H.O., Lee, T., Higuma, T., Nakajima, A., Yamamoto, E., Bryniarski, K.L., Vito, L. di, Vergallo, R., Fracassi, F., Russo, M., Seegers, L.M., McNulty, I., Park, S., Feldman, M., Escaned, J., Prati, F., Arbustini, E., Pinto, F.J., Waksman, R., Garcia-Garcia, H.M., Maehara, A., Ali, Z., Finn, A.V., Virmani, R., Kini, A.S., Daemen, J., Kume, T., Hibi, K., Tanaka, A., Akasaka, T., Kubo, T., Yasuda, S., Croce, K., Granada, J.F., Lerman, A., Prasad, A., Regar, E., Saito, Y., Sankardas, M.A., Subban, V., Weissman, N.J., Chen, Y.D., Yu, B., Nicholls, S.J., Barlis, P., West, N.E.J., Arbab-Zadeh, A., Ye, J.C., Dijkstra, J., Lee, H., Narula, J., Crea, F., Nakamura, S., Kakuta, T., Fujimoto, J., Fuster, V., and Jang, I.K.

Abstract

Optical coherence tomography (OCT) has been widely adopted in research on coronary atherosclerosis and adopted clinically to optimize percutaneous coronary intervention. In this Review, Jang and colleagues summarize this rapidly progressing field, with the aim of standardizing the use of OCT in coronary atherosclerosis.Since optical coherence tomography (OCT) was first performed in humans two decades ago, this imaging modality has been widely adopted in research on coronary atherosclerosis and adopted clinically for the optimization of percutaneous coronary intervention. In the past 10 years, substantial advances have been made in the understanding of in vivo vascular biology using OCT. Identification by OCT of culprit plaque pathology could potentially lead to a major shift in the management of patients with acute coronary syndromes. Detection by OCT of healed coronary plaque has been important in our understanding of the mechanisms involved in plaque destabilization and healing with the rapid progression of atherosclerosis. Accurate detection by OCT of sequelae from percutaneous coronary interventions that might be missed by angiography could improve clinical outcomes. In addition, OCT has become an essential diagnostic modality for myocardial infarction with non-obstructive coronary arteries. Insight into neoatherosclerosis from OCT could improve our understanding of the mechanisms of very late stent thrombosis. The appropriate use of OCT depends on accurate interpretation and understanding of the clinical significance of OCT findings. In this Review, we summarize the state of the art in cardiac OCT and facilitate the uniform use of this modality in coronary atherosclerosis. Contributions have been made by clinicians and investigators worldwide with extensive experience in OCT, with the aim that this document will serve as a standard reference for future research and clinical application.

Published
2022

47. SENSEI: Characterization of Single-Electron Events Using a Skipper Charge-Coupled Device

Author

Barak, L, Barak, L, Bloch, IM, Botti, A, Cababie, M, Cancelo, G, Chaplinsky, L, Chierchie, F, Crisler, M, Drlica-Wagner, A, Essig, R, Estrada, J, Etzion, E, Fernandez Moroni, G, Gift, D, Holland, SE, Munagavalasa, S, Orly, A, Rodrigues, D, Singal, A, Haro, MS, Stefanazzi, L, Tiffenberg, J, Uemura, S, Volansky, T, Yu, TT, Barak, L, Barak, L, Bloch, IM, Botti, A, Cababie, M, Cancelo, G, Chaplinsky, L, Chierchie, F, Crisler, M, Drlica-Wagner, A, Essig, R, Estrada, J, Etzion, E, Fernandez Moroni, G, Gift, D, Holland, SE, Munagavalasa, S, Orly, A, Rodrigues, D, Singal, A, Haro, MS, Stefanazzi, L, Tiffenberg, J, Uemura, S, Volansky, T, and Yu, TT

Abstract

We use a science-grade skipper charge-coupled device (skipper CCD) operating in a low-radiation background environment to develop a semiempirical model that characterizes the origin of single-electron events in CCDs. We identify, separate, and quantify three independent contributions to the single-electron events, which were previously bundled together and classified as "dark counts": dark current, amplifier light, and spurious charge. We measure a dark current, which depends on exposure, of (5.89±0.77)×10-4e-/pix/day, and an unprecedentedly low spurious charge contribution of (1.52±0.07)×10-4e-/pix, which is exposure independent. In addition, we provide a technique to study events produced by light emitted from the amplifier, which allows the detector's operation to be optimized to minimize this effect to a level below the dark-current contribution. Our accurate characterization of the single-electron events allows one to greatly extend the sensitivity of experiments searching for dark matter or coherent neutrino scattering. Moreover, an accurate understanding of the origin of single-electron events is critical to further progress in ongoing research and development efforts of skipper and conventional CCDs.

Published
2022

48. Skipper Charge-Coupled Device for Low-Energy-Threshold Particle Experiments above Ground

Author

Moroni, GF, Moroni, GF, Chierchie, F, Tiffenberg, J, Botti, A, Cababie, M, Cancelo, G, Depaoli, EL, Estrada, J, Holland, SE, Rodrigues, D, Sidelnik, I, Haro, MS, Stefanazzi, L, Uemura, S, Moroni, GF, Moroni, GF, Chierchie, F, Tiffenberg, J, Botti, A, Cababie, M, Cancelo, G, Depaoli, EL, Estrada, J, Holland, SE, Rodrigues, D, Sidelnik, I, Haro, MS, Stefanazzi, L, and Uemura, S

Abstract

We present experimental results using a single-electron resolution skipper CCD running above ground level to demonstrate the potential of this technology for its use in reactor neutrino observations and other low-energy particle-interaction experiments. Operating conditions and event-selection criteria are provided to decouple most of the background rate at low energies. The majority of this background comes from interactions in the inactive silicon surrounding the active detector volume that ends up in the readout register of the sensor. Our final results are compared with other low-threshold technologies showing a good control of the background for low ionization energies down to five electron-hole pairs. This demonstrates that the skipper CCD proves to be among the best options to measure low-energy and weakly interacting particles at ground level.

Published
2022

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