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130 results on '"Cabrera-Palmer, B."'

1. First detection of coherent elastic neutrino-nucleus scattering on germanium

Author

Adamski, S., Ahn, M., Barbeau, P. S., Belov, V., Bernardi, I., Bock, C., Bolozdynya, A., Bouabid, R., Browning, J., Cabrera-Palmer, B., Cedarblade-Jones, N., Rivera, J. Colón, Conley, E., da Silva, V., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Erlandson, A., Fabris, L., Galindo-Uribarri, A., Green, M. P., Hakenmüller, J., Heath, M. R., Hedges, S., Jeong, H., Johnson, B. A., Johnson, T., Jones, H., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Kyzylova, O., Lee, Y., Li, G., Li, L., Link, J. M., Liu, J., Luxnat, M., Major, A., Mann, K., Markoff, D. M., Mattingly, J., Moye, J., Mueller, P. E., Newby, J., Ogoi, N., O'Reilly, J., Parno, D. S., Pérez-Loureiro, D., Pershey, D., Prior, C. G., Queen, J., Rapp, R., Ray, H., Razuvaeva, O., Reyna, D., Rich, G. C., Rudik, D., Runge, J., Salvat, D. J., Sander, J., Scholberg, K., Shakirov, A., Simakov, G., Snow, W. M., Sosnovtsev, V., Stringer, M., Subedi, T., Suh, B., Sur, B., Tayloe, R., Tellez-Giron-Flores, K., Tsai, Y. -T., van Nieuwenhuizen, E. E., Virtue, C. J., Visser, G., Walkup, K., Ward, E. M., Wongjirad, T., Yang, Y., Yoo, J., Yu, C. -H., and Zaalishvili, A.

Subjects
High Energy Physics - Experiment
Abstract

We report the first detection of coherent elastic neutrino-nucleus scattering (CEvNS) on germanium, measured at the Spallation Neutron Source at Oak Ridge National Laboratory. The Ge-Mini detector of the COHERENT collaboration employs large-mass, low-noise, high-purity germanium spectrometers, enabling excellent energy resolution, and an analysis threshold of 1.5 keV electron-equivalent ionization energy. We observe a on-beam excess of 20.6$_{+7.1}^{-6.3}$ counts with a total exposure of 10.22 GWhkg and we reject the no-CEvNS hypothesis with 3.9 sigma significance. The result agrees with the predicted standard model of particle physics signal rate within 2 sigma., Comment: 7 pages, 5 figures

Published
2024

2. Accessing new physics with an undoped, cryogenic CsI CEvNS detector for COHERENT at the SNS

Author

Barbeau, P. S., Belov, V., Bernardi, I., Bock, C., Bolozdynya, A., Bouabid, R., Browning, J., Cabrera-Palmer, B., Conley, E., da Silva, V., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Erlandson, A., Fabris, L., Febbraro, M., Galindo-Uribarri, A., Green, M. P., Hakenmüller, J., Heath, M. R., Hedges, S., Johnson, B. A., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Kyzylova, O., Link, J. M., Liu, J., Major, A., Mann, K., Markoff, D. M., Mattingly, J., Mueller, P. E., Newby, J., Ogoi, N., O'Reilly, J., Parno, D. S., Pérez-Loureiro, D., Penttila, S. I., Pershey, D., Prior, C. G., Queen, J., Rapp, R., Ray, H., Razuvaeva, O., Reyna, D., Rich, G. C., Rudik, D., Runge, J., Salvat, D. J., Sander, J., Scholberg, K., Shakirov, A., Simakov, G., Snow, W. M., Sosnovtsev, V., Stringer, M., Subedi, T., Suh, B., Sur, B., Tayloe, R., Tellez-Giron-Flores, K., Tsai, Y. -T., Vanderwerp, J., van Nieuwenhuizen, E. E., Varner, R. L., Virtue, C. J., Visser, G., Walkup, K., Ward, E. M., Wongjirad, T., Yang, Y., Yoo, J., Yu, C. -H., and Zaalishvili, A.

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

We consider the potential for a 10-kg undoped cryogenic CsI detector operating at the Spallation Neutron Source to measure coherent elastic neutrino-nucleus scattering and its sensitivity to discover new physics beyond the standard model. Through a combination of increased event rate, lower threshold, and good timing resolution, such a detector would significantly improve on past measurements. We considered tests of several beyond-the-standard-model scenarios such as neutrino non-standard interactions and accelerator-produced dark matter. This detector's performance was also studied for relevant questions in nuclear physics and neutrino astronomy, namely the weak charge distribution of CsI nuclei and detection of neutrinos from a core-collapse supernova.

Published
2023

3. Characterization of a SiPM-based monolithic neutron scatter camera using dark counts

Author

Balajthy, J., Brown, J., Brubaker, E., Cabrera-Palmer, B., Cates, J., Goldblum, B. L., Folsom, M., Hausladen, P., Keefe, K., Nattress, J., Negut, V., Nishimura, K., Steele, J., and Ziock, K.

Subjects
Physics - Instrumentation and Detectors
Abstract

We report on the design and characterization of a prototype monolithic neutron scatter camera that is intended to significantly improve upon the geometrical shortcomings of conventional neutron cameras. The detector consists of a 50 mm $\times$ 56 mm $\times$ 60 mm monolithic block of EJ-204 plastic scintillator instrumented on two faces with arrays of 64 Hamamatsu S13360-6075PE silicon photomultipliers (SiPMs). The electronic crosstalk is limited to < 5% between adjacent channels and < 0.1% between all other channel pairs. SiPMs introduce a significantly elevated dark count rate over PMTs, as well as correlated noise from after-pulsing and optical crosstalk. In this article, we characterize the dark count rate and optical crosstalk and present a modified event reconstruction likelihood function that accounts for them. We find that the average dark count rate per SiPM is 4.3 MHz with a standard deviation of 1.5 MHz among devices. The analysis method we employ to measure internal optical crosstalk also naturally yields the mean and width of the single-electron pulse height. We calculate separate contributions to the width of the single-electron pulse-height from electronic noise and avalanche fluctuations. We demonstrate a timing resolution for a single-photon pulse to be 128 ($\pm$4) ps. Finally, coincidence analysis is employed to measure external (pixel-to-pixel) optical crosstalk. We present a map of the average external crosstalk probability between 2-by-4 groups of SiPMs, as well as the in-situ timing characteristics extracted from the coincidence analysis. Further work is needed to characterize the performance of the camera at reconstructing single- and double-site interactions, as well as image reconstruction.

Published
2023

4. COHERENT Collaboration data release from the measurements of CsI[Na] response to nuclear recoils

Author

Akimov, D., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Blackston, M. A., Bock, C., Bolozdynya, A., Browning, J., Cabrera-Palmer, B., Chernyak, D., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Rosso, A. Gallo, Galindo-Uribarri, A., Green, M. P., Heath, M. R., Hedges, S., Hoang, D., Hughes, M., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Link, J. M., Liu, J., Mann, K., Markoff, D. M., Mastroberti, J., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S. I., Pershey, D., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Salyapongse, A. M., Sander, J., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovtsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tolstukhin, I., Ujah, E., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wongjirad, T., Yang, Y., Yen, Y. -R., Yoo, J., Yu, C. -H., and Zettlemoyer, J.

Subjects
Physics - Instrumentation and Detectors
Abstract

Description of the data release 10.13139/OLCF/1969085 (https://doi.ccs.ornl.gov/ui/doi/426) from the measurements of the CsI[Na] response to low energy nuclear recoils by the COHERENT collaboration. The release corresponds to the results published in "D. Akimov et al 2022 JINST 17 P10034". We share the data in the form of raw ADC waveforms, provide benchmark values, and share plots to enhance the transparency and reproducibility of our results. This document describes the contents of the data release as well as guidance on the use of the data.

Published
2023

5. Measurement of the Electron-Neutrino Charged-Current Cross Sections on ${}^{127}$I with the COHERENT NaI$\nu$E detector

Author

An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Bock, C., Bolozdynya, A., Bouabid, R., Brown, A., Browning, J., Cabrera-Palmer, B., Cervantes, M., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Rosso, A. Gallo, Galindo-Uribarri, A., Germer, A. C., Green, M. P., Hakenmüller, J., Heath, M. R., Hedges, S., Hughes, M., Johnson, B. A., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Kyzylova, O., Li, L., Link, J. M., Liu, J., Mahoney, M., Major, A., Mann, K., Markoff, D. M., Mastroberti, J., Mattingly, J., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S. I., Pershey, D., Prior, C. G., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Sander, J., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Skuse, C., Snow, W. M., Sosnovtsev, V., Subedi, T., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tsai, Y. -T., Ujah, E., Vanderwerp, J., van Nieuwenhuizen, E. E., Varner, R. L., Virtue, C. J., Visser, G., Walkup, K., Ward, E. M., Wongjirad, T., Yoo, J., Yu, C. -H., Zawada, A., Zettlemoyer, J., and Zderic, A.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

Using an 185-kg NaI[Tl] array, COHERENT has measured the inclusive electron-neutrino charged-current cross section on ${}^{127}$I with pion decay-at-rest neutrinos produced by the Spallation Neutron Source at Oak Ridge National Laboratory. Iodine is one the heaviest targets for which low-energy ($\leq$ 50 MeV) inelastic neutrino-nucleus processes have been measured, and this is the first measurement of its inclusive cross section. After a five-year detector exposure, COHERENT reports a flux-averaged cross section for electron neutrinos of $9.2^{+2.1}_{-1.8} \times 10^{-40}$ cm$^2$. This corresponds to a value that is $\sim$41% lower than predicted using the MARLEY event generator with a measured Gamow-Teller strength distribution. In addition, the observed visible spectrum from charged-current scattering on $^{127}$I has been measured between 10 and 55 MeV, and the exclusive zero-neutron and one-or-more-neutron emission cross sections are measured to be $5.2^{+3.4}_{-3.1} \times 10^{-40}$ and $2.2^{+3.5}_{-2.2} \times 10^{-40}$ cm$^2$, respectively., Comment: 10 pages, 7 figures

Published
2023
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6. Measurement of ${}^{nat}$Pb($\nu_e$,X$n$) production with a stopped-pion neutrino source

Author

COHERENT Collaboration, An, P., Awe, C., Barbeau, P. S., Becker, B., Belling, S. W., Belov, V., Bernardi, I., Bock, C., Bolozdynya, A., Bouabid, R., Brown, A., Browning, J., Cabrera-Palmer, B., Cervantes, M., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Rosso, A. Gallo, Galindo-Uribarri, A., Green, M. P., Hakenmüller, J., Heath, M. R., Hedges, S., Hughes, M., Johnson, B. A., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Kyzylova, O., Li, L., Link, J. M., Liu, J., Major, A., Mann, K., Markoff, D. M., Mastroberti, J., Mattingly, J., Miller, K., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S. I., Pershey, D., Prior, C. G., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Salyapongse, A. M., Sander, J., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovtsev, V., Subedi, T., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Ujah, E., Vanderwerp, J., van Nieuwenhuizen, E. E., Varner, R. L., Virtue, C. J., Visser, G., Walkup, K., Ward, E. M., Wongjirad, T., Yoo, J., Yu, C. -H., and Zettlemoyer, J.

Subjects
High Energy Physics - Experiment, Nuclear Experiment
Abstract

Using neutrinos produced at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL), the COHERENT collaboration has studied the Pb($\nu_e$,X$n$) process with a lead neutrino-induced-neutron (NIN) detector. Data from this detector are fit jointly with previously collected COHERENT data on this process. A combined analysis of the two datasets yields a cross section that is $0.29^{+0.17}_{-0.16}$ times that predicted by the MARLEY event generator using experimentally-measured Gamow-Teller strength distributions, consistent with no NIN events at 1.8$\sigma$. This is the first inelastic neutrino-nucleus process COHERENT has studied, among several planned exploiting the high flux of low-energy neutrinos produced at the SNS., Comment: 11 pages, 9 figures, version accepted by Phys. Rev. D

Published
2022
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7. A COHERENT constraint on leptophobic dark matter using CsI data

Author

COHERENT Collaboration, Akimov, D., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Blackston, M. A., Bock, C., Bolozdynya, A., Bouabid, R., Browning, J., Cabrera-Palmer, B., Chernyak, D., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliot, S. R., Fabris, L., Febbraro, M., Rosso, A. Gallo, Galindo-Uribarri, A., Green, M. P., Heath, M. R., Hedges, S., Hoang, D., Hughes, M., Johnson, B. A., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kupman, A., Li, L., Link, J. M., Liu, J., Major, A., Mann, K., Markoff, D. M., Mastroberti, J., Mattingly, J., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S. I., Pershey, D., Prior, C., Rapp, R., Ray, H., Razuvaeva, O., Reyna, D., Rich, G. C., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Salyapongse, A. M., Sander, J., Scholberg, K., Shakirov, A., Simakov, G., Snow, W. M., Sosnovstsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tolstukhin, I., Ujah, E., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wongjirad, T., Yen, W. -R., Yoo, J., Yu, C. -H., and Zettlemoyer, J.

Subjects
High Energy Physics - Experiment
Abstract

We use data from the COHERENT CsI[Na] scintillation detector to constrain sub-GeV leptophobic dark matter models. This detector was built to observe low-energy nuclear recoils from coherent elastic neutrino-nucleus scattering. These capabilities enable searches for dark matter particles produced at the Spallation Neutron Source mediated by a vector portal particle with masses between 2 and 400 MeV/c$^2$. No evidence for dark matter is observed and a limit on the mediator coupling to quarks is placed. This constraint improves upon previous results by two orders of magnitude. This newly explored parameter space probes the region where the dark matter relic abundance is explained by leptophobic dark matter when the mediator mass is roughly twice the dark matter mass. COHERENT sets the best constraint on leptophobic dark matter at these masses.

Published
2022

8. The COHERENT Experimental Program

Author

Akimov, D., Alawabdeh, S., An, P., Arteaga, A., Awe, C., Barbeau, P. S., Barry, C., Becker, B., Belov, V., Bernardi, I., Blackston, M. A., Blokland, L., Bock, C., Bodur, B., Bolozdynya, A., Bouabid, R., Bracho, A., Browning, J., Cabrera-Palmer, B., Chen, N., Chernyak, D., Conley, E., Daughhetee, J., Daughtry, J., Day, E., Coello, M. del Valle, Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Fox, W., Galambos, J., Rosso, A. Gallo, Galindo-Uribarri, A., Gilbert, C., Green, M. P., Hansen, K. R., Harris, B., Heath, M. R., Hedges, S., Henderson, R., Hoang, D., Hughes, C., Hughes, M., Iverson, E., Jairam, P., Johnson, B. A., Johnson, T., Kaufman, L., Khromov, A., Konovalov, A., Koros, J., Kozlova, E., Kumpan, A., Li, L., Librande, J. T., Link, J. M., Liu, J., Major, A., Mann, K., Markoff, D. M., Mastroberti, J., Mattingly, J., McGoldrick, O., McIntyre, M., Melikyan, Y. A., Mishra, M., Mueller, P. E., Newby, J., Parno, D. S., Penne, A., Penttila, S. I., Pershey, D., Prior, C., Radford, D., Rahman, F., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Rimal, D., Ross, J., Rouzky, A., Rudik, D., Runge, J., Salvat, D. J., Salyapongse, A. M., Sander, J., Scholberg, K., Siehien, P., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovstsev, V., Steele, J., Hjelmstad, A. Strasbaugh, Subedi, T., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Thornton, R. T., Tolstukhin, I., Trotter, S., Tsai, F., Tsai, Y. -T., Ujah, E., Vanderwerp, J., van Nieuwenhuizen, E., Varner, R. L., Vasquez, S., Virtue, C. J., Visser, G., Walkup, K., Wang, J., Ward, E. M., Wiseman, C., Wongjirad, T., Wu, D., Yang, J., Yang, Y., Yen, Y. -R., Yoo, J., Yu, C. -H., Zettlemoyer, J., and Zhang, S.

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

The COHERENT experiment located in Neutrino Alley at the Spallation Neutron Source (SNS), Oak Ridge National Laboratory (ORNL), has made the world's first two measurements of coherent elastic neutrino-nucleus scattering (CEvNS), on CsI and argon, using neutrinos produced at the SNS. The COHERENT collaboration continues to pursue CEvNS measurements on various targets as well as additional studies of inelastic neutrino-nucleus interactions, searches for accelerator-produced dark matter (DM) and physics beyond the Standard Model, using the uniquely high-quality and high-intensity neutrino source available at the SNS. This white paper describes primarily COHERENT's ongoing and near-future program at the SNS First Target Station (FTS). Opportunities enabled by the SNS Second Target Station (STS) for the study of neutrino physics and development of novel detector technologies are elaborated in a separate white paper., Comment: 38 papers, 24 figures; Snowmass contribution

Published
2022

9. Monitoring the SNS basement neutron background with the MARS detector

Author

COHERENT Collaboration, Akimov, D., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Blackston, M. A., Bock, C., Bolozdynya, A., Browning, J., Cabrera-Palmer, B., Chernyak, D., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Rosso, A. Gallo, Galindo-Uribarri, A., Green, M. P., Heath, M. R., Hedges, S., Hoang, D., Hughes, M., Johnson, B. A., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Link, J. M., Liu, J., Mann, K., Markoff, D. M., Mastroberti, J., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S. I., Pershey, D., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Salyapongse, A. M., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovstsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tolstukhin, I., Ujah, E., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wongjirad, T., Yen, Y. -R., Yoo, J., Yu, C. -H., and Zettlemoyer, J.

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

We present the analysis and results of the first dataset collected with the MARS neutron detector deployed at the Oak Ridge National Laboratory Spallation Neutron Source (SNS) for the purpose of monitoring and characterizing the beam-related neutron (BRN) background for the COHERENT collaboration. MARS was positioned next to the COH-CsI coherent elastic neutrino-nucleus scattering detector in the SNS basement corridor. This is the basement location of closest proximity to the SNS target and thus, of highest neutrino flux, but it is also well shielded from the BRN flux by infill concrete and gravel. These data show the detector registered roughly one BRN per day. Using MARS' measured detection efficiency, the incoming BRN flux is estimated to be $1.20~\pm~0.56~\text{neutrons}/\text{m}^2/\text{MWh}$ for neutron energies above $\sim3.5$ MeV and up to a few tens of MeV. We compare our results with previous BRN measurements in the SNS basement corridor reported by other neutron detectors.

Published
2021
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10. Measurement of scintillation response of CsI[Na] to low-energy nuclear recoils by COHERENT

Author

Akimov, D., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Blackston, M. A., Bock, C., Bolozdynya, A., Browning, J., Cabrera-Palmer, B., Chernyak, D., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Rosso, A. Gallo, Galindo-Uribarri, A., Green, M. P., Heath, M. R., Hedges, S., Hoang, D., Hughes, M., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Link, J. M., Liu, J., Mann, K., Markoff, D. M., Mastroberti, J., Melikyan, Y. A., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S. I., Pershey, D., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Salyapongse, A. M., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovstsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tolstukhin, I., Ujah, E., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wongjirad, T., Yen, Y. -R., Yoo, J., Yu, C. -H., and Zettlemoyer, J.

Subjects
Physics - Instrumentation and Detectors
Abstract

We present results of several measurements of CsI[Na] scintillation response to 3-60 keV energy nuclear recoils performed by the COHERENT collaboration using tagged neutron elastic scattering experiments and an endpoint technique. Earlier results, used to estimate the coherent elastic neutrino-nucleus scattering (CEvNS) event rate for the first observation of this process achieved by COHERENT at the Spallation Neutron Source (SNS), have been reassessed. We discuss corrections for the identified systematic effects and update the respective uncertainty values. The impact of updated results on future precision tests of CEvNS is estimated. We scrutinize potential systematic effects that could affect each measurement. In particular we confirm the response of the H11934-200 Hamamatsu photomultiplier tube (PMT) used for the measurements presented in this study to be linear in the relevant signal scale region., Comment: The version accepted by JINST. The changes made as a result of the peer review process: 1. Section 8 "Global CsI[Na] QF data fit" is expanded. The main fit result and its uncertainty is NOT CHANGED. An alternative fit is now shown in Figure 14, Figure 15 is added to further validate the assumptions in the main fit. 2. The Appendix B is restructured for clarity

Published
2021

11. First Probe of Sub-GeV Dark Matter Beyond the Cosmological Expectation with the COHERENT CsI Detector at the SNS

Author

Akimov, D., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Blackston, M. A., Bock, C., Bolozdynya, A., Browning, J., Cabrera-Palmer, B., Chernyak, D., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Rosso, A. Gallo, Galindo-Uribarri, A., Green, M. P., Heath, M. R., Hedges, S., Hoang, D., Hughes, M., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Link, J. M., Liu, J., Mann, K., Markoff, D. M., Mastroberti, J., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S. I., Pershey, D., Rapp, R., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Salyapongse, A. M., Sander, J., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovstsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tolstukhin, I., Ujah, E., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wongjirad, T., Yen, Y. -R., Yoo, J., Yu, C. -H., and Zettlemoyer, J.

Subjects
High Energy Physics - Experiment
Abstract

The COHERENT collaboration searched for scalar dark matter particles produced at the Spallation Neutron Source with masses between 1 and 220~MeV/c$^2$ using a CsI[Na] scintillation detector sensitive to nuclear recoils above 9~keV$_\text{nr}$. No evidence for dark matter is found and we thus place limits on allowed parameter space. With this low-threshold detector, we are sensitive to coherent elastic scattering between dark matter and nuclei. The cross section for this process is orders of magnitude higher than for other processes historically used for accelerator-based direct-detection searches so that our small, 14.6~kg detector significantly improves on past constraints. At peak sensitivity, we reject the flux consistent with the cosmologically observed dark-matter concentration for all coupling constants $\alpha_D<0.64$, assuming a scalar dark-matter particle. We also calculate the sensitivity of future COHERENT detectors to dark-matter signals which will ambitiously test multiple dark-matter spin scenarios.

Published
2021

12. Measurement of the Coherent Elastic Neutrino-Nucleus Scattering Cross Section on CsI by COHERENT

Author

Akimov, D., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Blackston, M. A., Bock, C., Bolozdynya, A., Browning, J., Cabrera-Palmer, B., Chernyak, D., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Rosso, A. Gallo, Galindo-Uribarri, A., Green, M. P., Heath, M. R., Hedges, S., Hoang, D., Hughes, M., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Link, J. M., Liu, J., Mann, K., Markoff, D. M., Mastroberti, J., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S. I., Pershey, D., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Salyapongse, A. M., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovstsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tolstukhin, I., Ujah, E., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wongjirad, T., Yen, Y. -R., Yoo, J., Yu, C. -H., and Zettlemoyer, J.

Subjects
High Energy Physics - Experiment
Abstract

We measured the cross section of coherent elastic neutrino-nucleus scattering (\cevns{}) using a CsI[Na] scintillating crystal in a high flux of neutrinos produced at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory. New data collected before detector decommissioning has more than doubled the dataset since the first observation of \cevns{}, achieved with this detector. Systematic uncertainties have also been reduced with an updated quenching model, allowing for improved precision. With these analysis improvements, the COHERENT collaboration determined the cross section to be $(165^{+30}_{-25})\times10^{-40}$~cm$^2$, consistent with the standard model, giving the most precise measurement of \cevns{} yet. The timing structure of the neutrino beam has been exploited to compare the \cevns{} cross section from scattering of different neutrino flavors. This result places leading constraints on neutrino non-standard interactions while testing lepton flavor universality and measures the weak mixing angle as $\sin^2\theta_{W}=0.220^{+0.028}_{-0.026}$ at $Q^2\approx(50\text{ MeV})^2$

Published
2021
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13. Simulating the neutrino flux from the Spallation Neutron Source for the COHERENT experiment

Author

COHERENT Collaboration, Akimov, D., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Blackston, M. A., Bock, C., Bolozdynya, A., Browning, J., Cabrera-Palmer, B., Chernyak, D., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Galambos, J., Rosso, A. Gallo, Galindo-Uribarri, A., Green, M. P., Heath, M. R., Hedges, S., Hoang, D., Hughes, M., Iverson, E., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Link, J. M., Liu, J., Mann, K., Markoff, D. M., Mastroberti, J., McIntyre, M., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S. I., Pershey, D., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Rimal, D., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Salyapongse, A. M., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovstsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tolstukhin, I., Trotter, S., Ujah, E., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wongjirad, T., Yen, Y. -R., Yoo, J., Yu, C. -H., Zettlemoyer, J., and Zhang, S.

Subjects
High Energy Physics - Experiment, Nuclear Experiment
Abstract

The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory is a pulsed source of neutrons and, as a byproduct of this operation, an intense source of pulsed neutrinos via stopped-pion decay. The COHERENT collaboration uses this source to investigate coherent elastic neutrino-nucleus scattering and other physics with a suite of detectors. This work includes a description of our Geant4 simulation of neutrino production at the SNS and the flux calculation which informs the COHERENT studies. We estimate the uncertainty of this calculation at about 10% based on validation against available low-energy pion production data.

Published
2021

14. A D$_{2}$O detector for flux normalization of a pion decay-at-rest neutrino source

Author

COHERENT Collaboration, Akimov, D., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Blackston, M. A., Blokland, L., Bolozdynya, A., Cabrera-Palmer, B., Chernyak, D., Conley, E., Daughhetee, J., Day, E., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Rosso, A. Gallo, Galindo-Uribarri, A., Green, M. P., Heath, M. R., Hedges, S., Hoang, D., Hughes, M., Johnson, T., Khromov, A., Konovalov, A., Koros, J., Kozlova, E., Kumpan, A., Li, L., Link, J. M., Liu, J., Markoff, D. M., Mann, K., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S. I., Pershey, D., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Salyapongse, A. M., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovstsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tolstukhin, I., Ujah, E., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Ward, E. M., Wiseman, C., Wongjirad, T., Yen, Y. -R., Yoo, J., Yu, C. -H., and Zettlemoyer, J.

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

We report on the technical design and expected performance of a 592 kg heavy-water-Cherenkov detector to measure the absolute neutrino flux from the pion-decay-at-rest neutrino source at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL). The detector will be located roughly 20 m from the SNS target and will measure the neutrino flux with better than 5% statistical uncertainty in 2 years. This heavy-water detector will serve as the first module of a two-module detector system to ultimately measure the neutrino flux to 2-3% at both the First Target Station and the planned Second Target Station of the SNS. This detector will significantly reduce a dominant systematic uncertainty for neutrino cross-section measurements at the SNS, increasing the sensitivity of searches for new physics., Comment: As accepted to JINST

Published
2021
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15. Development of a $^{83\mathrm{m}}$Kr source for the calibration of the CENNS-10 Liquid Argon Detector

Author

COHERENT Collaboration, Akimov, D., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Blackston, M. A., Blokland, L., Bolozdynya, A., Cabrera-Palmer, B., Chen, N., Chernyak, D., Conley, E., Daughhetee, J., Coello, M. del Valle, Detwiler, J. A., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Fox, W., Galindo-Uribarri, A., Rosso, A. Gallo, Green, M. P., Hansen, K. S., Heath, M. R., Hedges, S., Hughes, M., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Librande, J. T., Link, J. M., Liu, J., Mann, K., Markoff, D. M., McGoldrick, O., Mueller, P. E., Newby, J., Parno, D. S., Pentilla, S., Pershey, D., Radford, D., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Rudik, D., Runge, J., Salvat, D. J., Scholberg, K., Shakirov, A., Simakov, G., Snow, W. M., Sosnovtsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Thornton, R. T., Tolstukhin, I., Vanderwerp, J., Varner, R. L., Venkataraman, R., Virtue, C. J., Visser, G., Wiseman, C., Wongjirad, T., Yang, J., Yen, Y. -R., Yoo, J., Yu, C. -H., and Zettlemoyer, J.

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

We report on the preparation of and calibration measurements with a $^{83\mathrm{m}}$Kr source for the CENNS-10 liquid argon detector. $^{83\mathrm{m}}$Kr atoms generated in the decay of a $^{83}$Rb source were introduced into the detector via injection into the Ar circulation loop. Scintillation light arising from the 9.4 keV and 32.1 keV conversion electrons in the decay of $^{83\mathrm{m}}$Kr in the detector volume were then observed. This calibration source allows the characterization of the low-energy response of the CENNS-10 detector and is applicable to other low-energy-threshold detectors. The energy resolution of the detector was measured to be 9$\%$ at the total $^{83\mathrm{m}}$Kr decay energy of 41.5 keV. We performed an analysis to separately calibrate the detector using the two conversion electrons at 9.4 keV and 32.1 keV, Comment: v2: As accepted to JINST

Published
2020
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16. COHERENT Collaboration data release from the first detection of coherent elastic neutrino-nucleus scattering on argon

Author

COHERENT Collaboration, Akimov, D., Albert, J. B., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Blackston, M. A., Blokland, L., Bolozdynya, A., Cabrera-Palmer, B., Chen, N., Chernyak, D., Conley, E., Cooper, R. L., Daughhetee, J., Coello, M. del Valle, Detwiler, J. A., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Fox, W., Galindo-Uribarri, A., Green, M. P., Hansen, K. S., Heath, M. R., Hedges, S., Hughes, M., Johnson, T., Kaemingk, M., Kaufman, L. J., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Librande, J. T., Link, J. M., Liu, J., Mann, K., Markoff, D. M., McGoldrick, O., Moreno, H., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S., Pershey, D., Radford, D., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Rudik, D., Runge, J., Salvat, D. J., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovtsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Thornton, R. T., Tolstukhin, I., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wiseman, C., Wongjirad, T., Yang, J., Yen, Y. -R., Yoo, J., Yu, C. -H., and Zettlemoyer, J.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

Release of COHERENT collaboration data from the first detection of coherent elastic neutrino-nucleus scattering (CEvNS) on argon. This release corresponds with the results of "Analysis A" published in Akimov et al., arXiv:2003.10630 [nucl-ex]. Data is shared in a binned, text-based format representing both "signal" and "backgrounds" along with associated uncertainties such that the included data can be used to perform independent analyses. This document describes the contents of the data release as well as guidance on the use of the data. Included example code in C++ (ROOT) and Python show one possible use of the included data., Comment: Update document with arXiv ID number in requested citation

Published
2020
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17. First Measurement of Coherent Elastic Neutrino-Nucleus Scattering on Argon

Author

COHERENT Collaboration, Akimov, D., Albert, J. B., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Blackston, M. A., Blokland, L., Bolozdynya, A., Cabrera-Palmer, B., Chen, N., Chernyak, D., Conley, E., Cooper, R. L., Daughhetee, J., Coello, M. del Valle, Detwiler, J. A., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Fox, W., Galindo-Uribarri, A., Green, M. P., Hansen, K. S., Heath, M. R., Hedges, S., Hughes, M., Johnson, T., Kaemingk, M., Kaufman, L. J., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Librande, J. T., Link, J. M., Liu, J., Mann, K., Markoff, D. M., McGoldrick, O., Moreno, H., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S., Pershey, D., Radford, D., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Rudik, D., Runge, J., Salvat, D. J., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovtsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Thornton, R. T., Tolstukhin, I., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wiseman, C., Wongjirad, T., Yang, J., Yen, Y. -R., Yoo, J., Yu, C. -H., and Zettlemoyer, J.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

We report the first measurement of coherent elastic neutrino-nucleus scattering (\cevns) on argon using a liquid argon detector at the Oak Ridge National Laboratory Spallation Neutron Source. Two independent analyses prefer \cevns over the background-only null hypothesis with greater than $3\sigma$ significance. The measured cross section, averaged over the incident neutrino flux, is (2.2 $\pm$ 0.7) $\times$10$^{-39}$ cm$^2$ -- consistent with the standard model prediction. The neutron-number dependence of this result, together with that from our previous measurement on CsI, confirms the existence of the \cevns process and provides improved constraints on non-standard neutrino interactions., Comment: 8 pages, 5 figures with 2 pages, 6 figures supplementary material V3: fixes to figs 3,4 V4: fix typo in table 1, V5: replaced missing appendix, V6: fix Eq 1, new fig 3, V7 final version, updated with final revisions

Published
2020
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18. Sensitivity of the COHERENT Experiment to Accelerator-Produced Dark Matter

Author

COHERENT Collaboration, Akimov, D., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Blackston, M. A., Bolozdynya, A., Cabrera-Palmer, B., Chen, N., Conley, E., Cooper, R. L., Daughhetee, J., Coello, M. del Valle, Detwiler, J. A., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Fox, W., Galindo-Uribarri, A., Green, M. P., Hansen, K. S., Heath, M. R., Hedges, S., Johnson, T., Kaemingk, M., Kaufman, L. J., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Librande, J. T., Link, J. M., Liu, J., Mann, K., Markoff, D. M., Moreno, H., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S., Pershey, D., Radford, D., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Rudik, D., Runge, J., Salvat, D. J., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovtsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Thornton, R. T., Tolstukhin, I., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wiseman, C., Wongjirad, T., Yang, J., Yen, Y. -R., Yoo, J., Yu, C. -H., and Zettlemoyer, J.

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

The COHERENT experiment is well poised to test sub-GeV dark matter models using low-energy recoil detectors sensitive to coherent elastic neutrino-nucleus scattering (CEvNS) in the $\pi$-DAR neutrino beam produced by the Spallation Neutron Source. We show how a planned 750-kg liquid argon scintillation detector would place leading limits on scalar light dark matter models, over two orders of magnitude of dark matter mass, for dark matter particles produced through vector and leptophobic portals in the absence of other effects beyond the standard model. The characteristic timing structure of a $\pi$-DAR beam allows a unique opportunity for constraining systematic uncertainties on the standard model background in a time window where signal is not expected, enhancing expected sensitivity. Additionally, we discuss future prospects, further increasing the discovery potential of CEvNS detectors. Such methods would test the calculated thermal dark matter abundance for all couplings $\alpha'\leq1$ within the vector portal model over an order of magnitude of dark matter masses.

Published
2019
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19. First Constraint on Coherent Elastic Neutrino-Nucleus Scattering in Argon

Author

COHERENT Collaboration, Akimov, D., Albert, J. B., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Blackston, M. A., Bolozdynya, A., Cabrera-Palmer, B., Cervantes, M., Collar, J. I., Cooper, R. L., Daughhetee, J., Coello, M. del Valle, Detwiler, J. A., D'Onofrio, M., Efremenko, Y., Erkela, E. M., Elliott, S. R., Fabris, L., Febbraro, M., Fox, W., Galindo-Uribarri, A., Green, M. P., Hansen, K. S., Heath, M. R., Hedges, S., Johnson, T., Kaemingk, M., Kaufman, L. J., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Librande, J. T., Link, J. M., Liu, J., Mann, K., Markoff, D. M., Moreno, H., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S., Pershey, D., Radford, D., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Rudik, D., Runge, J., Salvat, D. J., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovtsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Thornton, R. T., Tolstukhin, I., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wiseman, C., Wongjirad, T., Yang, J., Yen, Y. -R., Yoo, J., Yu, C. -H., and Zettlemoyer, J.

Subjects
High Energy Physics - Experiment, Nuclear Experiment
Abstract

Coherent elastic neutrino-nucleus scattering (CEvNS) is the dominant neutrino scattering channel for neutrinos of energy $E_\nu < 100$ MeV. We report a limit for this process using data collected in an engineering run of the 29 kg CENNS-10 liquid argon detector located 27.5 m from the Oak Ridge National Laboratory Spallation Neutron Source (SNS) Hg target with $4.2\times 10^{22}$ protons on target. The dataset yielded $< 7.4$ observed CEvNS events implying a cross section for the process, averaged over the SNS pion decay-at-rest flux, of $<3.4 \times 10^{-39}$ cm$^{2}$, a limit within twice the Standard Model prediction. This is the first limit on CEvNS from an argon nucleus and confirms the earlier CsI non-standard neutrino interaction constraints from the collaboration. This run demonstrated the feasibility of the ongoing experimental effort to detect CEvNS with liquid argon.

Published
2019
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20. COHERENT Collaboration data release from the first observation of coherent elastic neutrino-nucleus scattering

Author

COHERENT Collaboration, Akimov, D., Albert, J. B., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Blackston, M. A., Bolozdynya, A., Brown, A., Burenkov, A., Cabrera-Palmer, B., Cervantes, M., Collar, J. I., Cooper, R. J., Cooper, R. L., Cuesta, C., Daughhetee, J., Dean, D. J., Coello, M. del Valle, Detwiler, J., D'Onofrio, M., Eberhardt, A., Efremenko, Y., Elliott, S. R., Etenko, A., Fabris, L., Febbraro, M., Fields, N., Fox, W., Fu, Z., Galindo-Uribarri, A., Green, M. P., Hai, M., Heath, M. R., Hedges, S., Hornback, D., Hossbach, T. W., Iverson, E. B., Kaemingk, M., Kaufman, L. J., Klein, S. R., Khromov, A., Ki, S., Konovalov, A., Kovalenko, A., Kremer, M., Kumpan, A., Leadbetter, C., Li, L., Lu, W., Mann, K., Markoff, D. M., Melikyan, Y., Miller, K., Moreno, H., Mueller, P. E., Naumov, P., Newby, J., Orrell, J. L., Overman, C. T., Parno, D. S., Penttila, S., Perumpilly, G., Radford, D. C., Rapp, R., Ray, H., Raybern, J., Reyna, D., Rich, G. C., Rimal, D., Rudik, D., Salvat, D. J., Scholberg, K., Scholz, B., Sinev, G., Snow, W. M., Sosnovtsev, V., Shakirov, A., Suchyta, S., Suh, B., Tayloe, R., Thornton, R. T., Tolstukhin, I., Vanderwerp, J., Varner, R. L., Virtue, C. J., Wan, Z., Yoo, J., Yu, C. -H., Zawada, A., Zderic, A., and Zettlemoyer, J.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

This release includes data and information necessary to perform independent analyses of the COHERENT result presented in Akimov et al., arXiv:1708.01294 [nucl-ex]. Data is shared in a binned, text-based format, including both "signal" and "background" regions, so that counts and associated uncertainties can be quantitatively calculated for the purpose of separate analyses. This document describes the included information and its format, offering some guidance on use of the data. Accompanying code examples show basic interaction with the data using Python.

Published
2018
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21. COHERENT 2018 at the Spallation Neutron Source

Author

Akimov, D., Albert, J. B., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Blackston, M. A., Bolozdynya, A., Brown, A., Burenkov, A., Cabrera-Palmer, B., Cervantes, M., Collar, J. I., Cooper, R. J., Cooper, R. L., Daughhetee, J., Dean, D. J., Coello, M. del Valle, Detwiler, J. A., D'Onofrio, M., Efremenko, Y., Elliott, S. R., Erkela, E., Etenko, A., Fabris, L., Febbraro, M., Fields, N., Fox, W., Galindo-Uribarri, A., Green, M. P., Heath, M. R., Hedges, S., Iverson, E. B., Kaemingk, M., Kaufman, L. J., Klein, S. R., Khromov, A., Ki, S., Konovalov, A., Kovalenko, A., Kumpan, A., Li, L., Lu, W., Mann, K., Melikyan, Y., Markoff, D. M., Moreno, H., Mueller, P. E., Naumov, P., Newby, J., Parno, D. S., Penttila, S., Perumpilly, G., Radford, D., Rapp, R., Ray, H., Raybern, J., Reyna, D., Rich, G. C., Rimal, D., Rudik, D., Salvat, D. J., Scholberg, K., Scholz, B., Sinev, G., Snow, W. M., Sosnovtsev, V., Shakirov, A., Suh, B., Tayloe, R., Thornton, R. T., Tolstukhin, I., Vanderwerp, J., Varner, R. L., Virtue, C. J., Yoo, J., Yu, C. -H., and Zettlemoyer, J.

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

The primary goal of the COHERENT collaboration is to measure and study coherent elastic neutrino-nucleus scattering (CEvNS) using the high-power, few-tens-of-MeV, pulsed source of neutrinos provided by the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL). The COHERENT collaboration reported the first detection of CEvNS [Akimov:2017ade] using a CsI[Na] detector. At present the collaboration is deploying four detector technologies: a CsI[Na] scintillating crystal, p-type point-contact germanium detectors, single-phase liquid argon, and NaI[Tl] crystals. All detectors are located in the neutron-quiet basement of the SNS target building at distances 20-30 m from the SNS neutrino source. The simultaneous measurement in all four COHERENT detector subsystems will test the $N^2$ dependence of the cross section and search for new physics. In addition, COHERENT is measuring neutrino-induced neutrons from charged- and neutral-current neutrino interactions on nuclei in shielding materials, which represent a non-negligible background for CEvNS as well as being of intrinsic interest. The Collaboration is planning as well to look for charged-current interactions of relevance to supernova and weak-interaction physics. This document describes concisely the COHERENT physics motivations, sensitivity, and next plans for measurements at the SNS to be accomplished on a few-year timescale., Comment: 22 pages, 14 figures

Published
2018

22. Observation of Coherent Elastic Neutrino-Nucleus Scattering

Author

Akimov, D., Albert, J. B., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Brown, A., Bolozdynya, A., Cabrera-Palmer, B., Cervantes, M., Collar, J. I., Cooper, R. J., Cooper, R. L., Cuesta, C., Dean, D. J., Detwiler, J. A., Eberhardt, A., Efremenko, Y., Elliott, S. R., Erkela, E. M., Fabris, L., Febbraro, M., Fields, N. E., Fox, W., Fu, Z., Galindo-Uribarri, A., Green, M. P., Hai, M., Heath, M. R., Hedges, S., Hornback, D., Hossbach, T. W., Iverson, E. B., Kaufman, L. J., Ki, S., Klein, S. R., Khromov, A., Konovalov, A., Kremer, M., Kumpan, A., Leadbetter, C., Li, L., Lu, W., Mann, K., Markoff, D. M., Miller, K., Moreno, H., Mueller, P. E., Newby, J., Orrell, J. L., Overman, C. T., Parno, D. S., Penttila, S., Perumpilly, G., Ray, H., Raybern, J., Reyna, D., Rich, G. C., Rimal, D., Rudik, D., Scholberg, K., Scholz, B. J., Sinev, G., Snow, W. M., Sosnovtsev, V., Shakirov, A., Suchyta, S., Suh, B., Tayloe, R., Thornton, R. T., Tolstukhin, I., Vanderwerp, J., Varner, R. L., Virtue, C. J., Wan, Z., Yoo, J., Yu, C. -H., Zawada, A., Zettlemoyer, J., and Zderic, A. M.

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

The coherent elastic scattering of neutrinos off nuclei has eluded detection for four decades, even though its predicted cross-section is the largest by far of all low-energy neutrino couplings. This mode of interaction provides new opportunities to study neutrino properties, and leads to a miniaturization of detector size, with potential technological applications. We observe this process at a 6.7-sigma confidence level, using a low-background, 14.6-kg CsI[Na] scintillator exposed to the neutrino emissions from the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory. Characteristic signatures in energy and time, predicted by the Standard Model for this process, are observed in high signal-to-background conditions. Improved constraints on non-standard neutrino interactions with quarks are derived from this initial dataset.

Published
2017
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23. Accessing new physics with an undoped, cryogenic CsI CEvNS detector for COHERENT at the SNS

Author

Barbeau, P. S., primary, Belov, V., additional, Bernardi, I., additional, Bock, C., additional, Bolozdynya, A., additional, Bouabid, R., additional, Browning, J., additional, Cabrera-Palmer, B., additional, Conley, E., additional, da Silva, V., additional, Daughhetee, J., additional, Detwiler, J., additional, Ding, K., additional, Durand, M. R., additional, Efremenko, Y., additional, Elliott, S. R., additional, Erlandson, A., additional, Fabris, L., additional, Febbraro, M., additional, Galindo-Uribarri, A., additional, Green, M. P., additional, Hakenmüller, J., additional, Heath, M. R., additional, Hedges, S., additional, Johnson, B. A., additional, Johnson, T., additional, Khromov, A., additional, Konovalov, A., additional, Kozlova, E., additional, Kumpan, A., additional, Kyzylova, O., additional, Link, J. M., additional, Liu, J., additional, Major, A., additional, Mann, K., additional, Markoff, D. M., additional, Mattingly, J., additional, Mueller, P. E., additional, Newby, J., additional, Ogoi, N., additional, O’Reilly, J., additional, Parno, D. S., additional, Pérez-Loureiro, D., additional, Penttila, S. I., additional, Pershey, D., additional, Prior, C. G., additional, Queen, J., additional, Rapp, R., additional, Ray, H., additional, Razuvaeva, O., additional, Reyna, D., additional, Rich, G. C., additional, Rudik, D., additional, Runge, J., additional, Salvat, D. J., additional, Sander, J., additional, Scholberg, K., additional, Shakirov, A., additional, Simakov, G., additional, Snow, W. M., additional, Sosnovtsev, V., additional, Stringer, M., additional, Subedi, T., additional, Suh, B., additional, Sur, B., additional, Tayloe, R., additional, Tellez-Giron-Flores, K., additional, Tsai, Y.-T., additional, Vanderwerp, J., additional, van Nieuwenhuizen, E. E., additional, Varner, R. L., additional, Virtue, C. J., additional, Visser, G., additional, Walkup, K., additional, Ward, E. M., additional, Wongjirad, T., additional, Yang, Y., additional, Yoo, J., additional, Yu, C.-H., additional, and Zaalishvili, A., additional

Published
2024
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24. Observation of coherent elastic neutrino-nucleus scattering

Author

Akimov, D, Albert, JB, An, P, Awe, C, Barbeau, PS, Becker, B, Belov, V, Brown, A, Bolozdynya, A, Cabrera-Palmer, B, Cervantes, M, Collar, JI, Cooper, RJ, Cooper, RL, Cuesta, C, Dean, DJ, Detwiler, JA, Eberhardt, A, Efremenko, Y, Elliott, SR, Erkela, EM, Fabris, L, Febbraro, M, Fields, NE, Fox, W, Fu, Z, Galindo-Uribarri, A, Green, MP, Hai, M, Heath, MR, Hedges, S, Hornback, D, Hossbach, TW, Iverson, EB, Kaufman, LJ, Ki, S, Klein, SR, Khromov, A, Konovalov, A, Kremer, M, Kumpan, A, Leadbetter, C, Li, L, Lu, W, Mann, K, Markoff, DM, Miller, K, Moreno, H, Mueller, PE, Newby, J, Orrell, JL, Overman, CT, Parno, DS, Penttila, S, Perumpilly, G, Ray, H, Raybern, J, Reyna, D, Rich, GC, Rimal, D, Rudik, D, Scholberg, K, Scholz, BJ, Sinev, G, Snow, WM, Sosnovtsev, V, Shakirov, A, Suchyta, S, Suh, B, Tayloe, R, Thornton, RT, Tolstukhin, I, Vanderwerp, J, Varner, RL, Virtue, CJ, Wan, Z, Yoo, J, Yu, C-H, Zawada, A, Zettlemoyer, J, Zderic, AM, and Collaboration, COHERENT

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, COHERENT Collaboration, nucl-ex, hep-ex, hep-ph, nucl-th, General Science & Technology
Abstract

The coherent elastic scattering of neutrinos off nuclei has eluded detection for four decades, even though its predicted cross section is by far the largest of all low-energy neutrino couplings. This mode of interaction offers new opportunities to study neutrino properties and leads to a miniaturization of detector size, with potential technological applications. We observed this process at a 6.7σ confidence level, using a low-background, 14.6-kilogram CsI[Na] scintillator exposed to the neutrino emissions from the Spallation Neutron Source at Oak Ridge National Laboratory. Characteristic signatures in energy and time, predicted by the standard model for this process, were observed in high signal-to-background conditions. Improved constraints on nonstandard neutrino interactions with quarks are derived from this initial data set.

Published
2017

25. The COHERENT Experiment at the Spallation Neutron Source

Author

COHERENT Collaboration, Akimov, D., An, P., Awe, C., Barbeau, P. S., Barton, P., Becker, B., Belov, V., Bolozdynya, A., Burenkov, A., Cabrera-Palmer, B., Collar, J. I., Cooper, R. J., Cooper, R. L., Cuesta, C., Dean, D., Detwiler, J., Dolgolenko, A. G., Efremenko, Y., Elliott, S. R., Etenko, A., Fields, N., Fox, W., Galindo-Uribarri, A., Green, M., Heath, M., Hedges, S., Hornback, D., Iverson, E. B., Kaufman, L., Klein, S. R., Khromov, A., Konovalov, A., Kovalenko, A., Kumpan, A., Leadbetter, C., Li, L., Lu, W., Melikyan, Y., Markoff, D., Miller, K., Middlebrook, M., Mueller, P., Naumov, P., Newby, J., Parno, D., Penttila, S., Perumpilly, G., Radford, D., Ray, H., Raybern, J., Reyna, D., Rich, G. C., Rimal, D., Rudik, D., Scholberg, K., Scholz, B., Snow, W. M., Sosnovtsev, A., Shakirov, A., Suchyta, S., Suh, B., Tayloe, R., Thornton, R. T., Tolstukhin, A., Vetter, K., and Yu, C. H.

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

The COHERENT collaboration's primary objective is to measure coherent elastic neutrino-nucleus scattering (CEvNS) using the unique, high-quality source of tens-of-MeV neutrinos provided by the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL). In spite of its large cross section, the CEvNS process has never been observed, due to tiny energies of the resulting nuclear recoils which are out of reach for standard neutrino detectors. The measurement of CEvNS has now become feasible, thanks to the development of ultra-sensitive technology for rare decay and weakly-interacting massive particle (dark matter) searches. The CEvNS cross section is cleanly predicted in the standard model; hence its measurement provides a standard model test. It is relevant for supernova physics and supernova-neutrino detection, and enables validation of dark-matter detector background and detector-response models. In the long term, precision measurement of CEvNS will address questions of nuclear structure. COHERENT will deploy multiple detector technologies in a phased approach: a 14-kg CsI[Na] scintillating crystal, 15 kg of p-type point-contact germanium detectors, and 100 kg of liquid xenon in a two-phase time projection chamber. Following an extensive background measurement campaign, a location in the SNS basement has proven to be neutron-quiet and suitable for deployment of the COHERENT detector suite. The simultaneous deployment of the three COHERENT detector subsystems will test the $N^2$ dependence of the cross section and ensure an unambiguous discovery of CEvNS. This document describes concisely the COHERENT physics motivations, sensitivity and plans for measurements at the SNS to be accomplished on a four-year timescale., Comment: 19 pages, 12 figures: corrections to author list

Published
2015

26. Design of a transportable high efficiency fast neutron spectrometer

Author

Roecker, C, Bernstein, A, Bowden, NS, Cabrera-Palmer, B, Dazeley, S, Gerling, M, Marleau, P, Sweany, MD, and Vetter, K

Subjects
Nuclear and Plasma Physics, Synchrotrons and Accelerators, Physical Sciences, Fast neutron spectroscopy, Neutron multiplicity, Capture-gating, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Other Physical Sciences, Nuclear & Particles Physics, Nuclear and plasma physics
Abstract

A transportable fast neutron detection system has been designed and constructed for measuring neutron energy spectra and flux ranging from tens to hundreds of MeV. The transportability of the spectrometer reduces the detector-related systematic bias between different neutron spectra and flux measurements, which allows for the comparison of measurements above or below ground. The spectrometer will measure neutron fluxes that are of prohibitively low intensity compared to the site-specific background rates targeted by other transportable fast neutron detection systems. To measure low intensity high-energy neutron fluxes, a conventional capture-gating technique is used for measuring neutron energies above 20 MeV and a novel multiplicity technique is used for measuring neutron energies above 100 MeV. The spectrometer is composed of two Gd containing plastic scintillator detectors arranged around a lead spallation target. To calibrate and characterize the position dependent response of the spectrometer, a Monte Carlo model was developed and used in conjunction with experimental data from gamma ray sources. Multiplicity event identification algorithms were developed and used with a Cf-252 neutron multiplicity source to validate the Monte Carlo model Gd concentration and secondary neutron capture efficiency. The validated Monte Carlo model was used to predict an effective area for the multiplicity and capture gating analyses. For incident neutron energies between 100 MeV and 1000 MeV with an isotropic angular distribution, the multiplicity analysis predicted an effective area of 500 cm2 rising to 5000 cm2. For neutron energies above 20 MeV, the capture-gating analysis predicted an effective area between 1800 cm2 and 2500 cm2. The multiplicity mode was found to be sensitive to the incident neutron angular distribution.

Published
2016

27. Coherent Scattering Investigations at the Spallation Neutron Source: a Snowmass White Paper

Author

Akimov, D., Bernstein, A., Barbeau, P., Barton, P., Bolozdynya, A., Cabrera-Palmer, B., Cavanna, F., Cianciolo, V., Collar, J., Cooper, R. J., Dean, D., Efremenko, Y., Etenko, A., Fields, N., Foxe, M., Figueroa-Feliciano, E., Fomin, N., Gallmeier, F., Garishvili, I., Gerling, M., Green, M., Greene, G., Hatzikoutelis, A., Henning, R., Hix, R., Hogan, D., Hornback, D., Jovanovic, I., Hossbach, T., Iverson, E., Klein, S. R., Khromov, A., Link, J., Louis, W., Lu, W., Mauger, C., Marleau, P., Markoff, D., Martin, R. D., Mueller, P., Newby, J., Orrell, J., O'Shaughnessy, C., Pentilla, S., Patton, K., Poon, A. W., Radford, D., Reyna, D., Ray, H., Scholberg, K., Sosnovtsev, V., Tayloe, R., Vetter, K., Virtue, C., Wilkerson, J., Yoo, J., and Yu, C. H.

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

The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory, Tennessee, provides an intense flux of neutrinos in the few tens-of-MeV range, with a sharply-pulsed timing structure that is beneficial for background rejection. In this white paper, we describe how the SNS source can be used for a measurement of coherent elastic neutrino-nucleus scattering (CENNS), and the physics reach of different phases of such an experimental program (CSI: Coherent Scattering Investigations at the SNS)., Comment: Snowmass white paper

Published
2013

28. Results from a Search for Light-Mass Dark Matter with a P-type Point Contact Germanium Detector

Author

Aalseth, C. E., Barbeau, P. S., Bowden, N. S., Cabrera-Palmer, B., Colaresi, J., Collar, J. I., Dazeley, S., de Lurgio, P., Drake, G., Fast, J. E., Fields, N., Greenberg, C. H., Hossbach, T. W., Keillor, M. E., Kephart, J. D., Marino, M. G., Miley, H. S., Miller, M. L., Orrell, J. L., Radford, D. C., Reyna, D., Robertson, R. G. H., Talaga, R. L., Tench, O., Van Wechel, T. D., Wilkerson, J. F., and Yocum, K. M.

Subjects
Astrophysics - Cosmology and Extragalactic Astrophysics, High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

We report on several features present in the energy spectrum from an ultra low-noise germanium detector operated at 2,100 m.w.e. By implementing a new technique able to reject surface events, a number of cosmogenic peaks can be observed for the first time. We discuss several possible causes for an irreducible excess of bulk-like events below 3 keVee, including a dark matter candidate common to the DAMA/LIBRA annual modulation effect, the hint of a signal in CDMS, and phenomenological predictions. Improved constraints are placed on a cosmological origin for the DAMA/LIBRA effect., Comment: 4 pages, 4 figures. v2: submitted version. Minimal changes in wording, one reference added

Published
2010
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29. Measurement of Electron-Neutrino Charged-Current Cross Sections on I127 with the COHERENT NaIνE Detector

Author

An, P., primary, Awe, C., additional, Barbeau, P. S., additional, Becker, B., additional, Belov, V., additional, Bernardi, I., additional, Bock, C., additional, Bolozdynya, A., additional, Bouabid, R., additional, Brown, A., additional, Browning, J., additional, Cabrera-Palmer, B., additional, Cervantes, M., additional, Conley, E., additional, Daughhetee, J., additional, Detwiler, J., additional, Ding, K., additional, Durand, M. R., additional, Efremenko, Y., additional, Elliott, S. R., additional, Fabris, L., additional, Febbraro, M., additional, Gallo Rosso, A., additional, Galindo-Uribarri, A., additional, Germer, A. C., additional, Green, M. P., additional, Hakenmüller, J., additional, Heath, M. R., additional, Hedges, S., additional, Hughes, M., additional, Johnson, B. A., additional, Johnson, T., additional, Khromov, A., additional, Konovalov, A., additional, Kozlova, E., additional, Kumpan, A., additional, Kyzylova, O., additional, Li, L., additional, Link, J. M., additional, Liu, J., additional, Mahoney, M., additional, Major, A., additional, Mann, K., additional, Markoff, D. M., additional, Mastroberti, J., additional, Mattingly, J., additional, Mueller, P. E., additional, Newby, J., additional, Parno, D. S., additional, Penttila, S. I., additional, Pershey, D., additional, Prior, C. G., additional, Rapp, R., additional, Ray, H., additional, Raybern, J., additional, Razuvaeva, O., additional, Reyna, D., additional, Rich, G. C., additional, Ross, J., additional, Rudik, D., additional, Runge, J., additional, Salvat, D. J., additional, Sander, J., additional, Scholberg, K., additional, Shakirov, A., additional, Simakov, G., additional, Sinev, G., additional, Skuse, C., additional, Snow, W. M., additional, Sosnovtsev, V., additional, Subedi, T., additional, Suh, B., additional, Tayloe, R., additional, Tellez-Giron-Flores, K., additional, Tsai, Y.-T., additional, Ujah, E., additional, Vanderwerp, J., additional, van Nieuwenhuizen, E. E., additional, Varner, R. L., additional, Virtue, C. J., additional, Visser, G., additional, Walkup, K., additional, Ward, E. M., additional, Wongjirad, T., additional, Yoo, J., additional, Yu, C.-H., additional, Zawada, A., additional, Zettlemoyer, J., additional, and Zderic, A., additional

Published
2023
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30. Measurement of Pbnat(νe,Xn) production with a stopped-pion neutrino source

Author

An, P., primary, Awe, C., additional, Barbeau, P. S., additional, Becker, B., additional, Belling, S. W., additional, Belov, V., additional, Bernardi, I., additional, Bock, C., additional, Bolozdynya, A., additional, Bouabid, R., additional, Brown, A., additional, Browning, J., additional, Cabrera-Palmer, B., additional, Cervantes, M., additional, Conley, E., additional, Daughhetee, J., additional, Detwiler, J., additional, Ding, K., additional, Durand, M. R., additional, Efremenko, Y., additional, Elliott, S. R., additional, Fabris, L., additional, Febbraro, M., additional, Gallo Rosso, A., additional, Galindo-Uribarri, A., additional, Green, M. P., additional, Hakenmüller, J., additional, Heath, M. R., additional, Hedges, S., additional, Hughes, M., additional, Johnson, B. A., additional, Johnson, T., additional, Khromov, A., additional, Konovalov, A., additional, Kozlova, E., additional, Kumpan, A., additional, Kyzylova, O., additional, Li, L., additional, Link, J. M., additional, Liu, J., additional, Major, A., additional, Mann, K., additional, Markoff, D. M., additional, Mastroberti, J., additional, Mattingly, J., additional, Miller, K., additional, Mueller, P. E., additional, Newby, J., additional, Parno, D. S., additional, Penttila, S. I., additional, Pershey, D., additional, Prior, C. G., additional, Rapp, R., additional, Ray, H., additional, Raybern, J., additional, Razuvaeva, O., additional, Reyna, D., additional, Rich, G. C., additional, Ross, J., additional, Rudik, D., additional, Runge, J., additional, Salvat, D. J., additional, Salyapongse, A. M., additional, Sander, J., additional, Scholberg, K., additional, Shakirov, A., additional, Simakov, G., additional, Sinev, G., additional, Snow, W. M., additional, Sosnovtsev, V., additional, Subedi, T., additional, Suh, B., additional, Tayloe, R., additional, Tellez-Giron-Flores, K., additional, Ujah, E., additional, Vanderwerp, J., additional, van Nieuwenhuizen, E. E., additional, Varner, R. L., additional, Virtue, C. J., additional, Visser, G., additional, Walkup, K., additional, Ward, E. M., additional, Wongjirad, T., additional, Yoo, J., additional, Yu, C.-H., additional, and Zettlemoyer, J., additional

Published
2023
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32. First Probe of Sub-GeV Dark Matter beyond the Cosmological Expectation with the COHERENT CsI Detector at the SNS

Author

Akimov, D., primary, An, P., additional, Awe, C., additional, Barbeau, P. S., additional, Becker, B., additional, Belov, V., additional, Bernardi, I., additional, Blackston, M. A., additional, Bock, C., additional, Bolozdynya, A., additional, Browning, J., additional, Cabrera-Palmer, B., additional, Chernyak, D., additional, Conley, E., additional, Daughhetee, J., additional, Detwiler, J., additional, Ding, K., additional, Durand, M. R., additional, Efremenko, Y., additional, Elliott, S. R., additional, Fabris, L., additional, Febbraro, M., additional, Gallo Rosso, A., additional, Galindo-Uribarri, A., additional, Green, M. P., additional, Heath, M. R., additional, Hedges, S., additional, Hoang, D., additional, Hughes, M., additional, Johnson, T., additional, Khromov, A., additional, Konovalov, A., additional, Kozlova, E., additional, Kumpan, A., additional, Li, L., additional, Link, J. M., additional, Liu, J., additional, Mann, K., additional, Markoff, D. M., additional, Mastroberti, J., additional, Mueller, P. E., additional, Newby, J., additional, Parno, D. S., additional, Penttila, S. I., additional, Pershey, D., additional, Rapp, R., additional, Raybern, J., additional, Razuvaeva, O., additional, Reyna, D., additional, Rich, G. C., additional, Ross, J., additional, Rudik, D., additional, Runge, J., additional, Salvat, D. J., additional, Salyapongse, A. M., additional, Sander, J., additional, Scholberg, K., additional, Shakirov, A., additional, Simakov, G., additional, Sinev, G., additional, Snow, W. M., additional, Sosnovtsev, V., additional, Suh, B., additional, Tayloe, R., additional, Tellez-Giron-Flores, K., additional, Tolstukhin, I., additional, Ujah, E., additional, Vanderwerp, J., additional, Varner, R. L., additional, Virtue, C. J., additional, Visser, G., additional, Wongjirad, T., additional, Yen, Y.-R., additional, Yoo, J., additional, Yu, C.-H., additional, and Zettlemoyer, J., additional

Published
2023
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35. Measurement of the inclusive electron-neutrino charged-current cross section on ${}^{127}$I with the COHERENT NaI$ν$E detector

Author

An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Bock, C., Bolozdynya, A., Bouabid, R., Brown, A., Browning, J., Cabrera-Palmer, B., Cervantes, M., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Rosso, A. Gallo, Galindo-Uribarri, A., Germer, A. C., Green, M. P., Hakenmueller, J., Heath, M. R., Hedges, S., Hughes, M., Johnson, B. A., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Kyzylova, O., Li, L., Link, J. M., Liu, J., Mahoney, M., Major, A., Mann, K., Markoff, D. M., Mastroberti, J., Mattingly, J., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S. I., Pershey, D., Prior, C. G., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Sander, J., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Skuse, C., Snow, W. M., Sosnovtsev, V., Subedi, T., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tsai, Y. -T., Ujah, E., Vanderwerp, J., van Nieuwenhuizen, E. E., Varner, R. L., Virtue, C. J., Visser, G., Walkup, K., Ward, E. M., Wongjirad, T., Yoo, J., Yu, C. -H., Zawada, A., Zettlemoyer, J., and Zderic, A.

Subjects
High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment, High Energy Physics - Experiment
Abstract

Using an 185-kg NaI[Tl] array, COHERENT has measured the inclusive electron-neutrino charged-current cross section on ${}^{127}$I with neutrinos produced by the Spallation Neutron Source at Oak Ridge National Laboratory. Iodine is one the heaviest targets for which low-energy ($\leq 50$ MeV) inelastic neutrino-nucleus processes have been measured, and this is the first measurement of its inclusive cross section. After a five-year detector exposure, COHERENT reports a flux-averaged cross section for electron neutrinos produced at a pion decay-at-rest source of $9.2^{+2.1}_{-1.8}\times10^{-40}$ cm$^2$. This corresponds to a value that is $\sim$41% lower than predicted using the MARLEY event generator with a measured Gamow-Teller strength distribution. In addition, the observed visible spectrum from charged-current scattering on ${}^{127}$I has been measured between 10 and 55 MeV, and the exclusive zero-neutron and one-or-more-neutron emission cross sections are measured to be $5.12_{-3.1}^{+3.4} \times 10^{-40}\mbox{ cm}^2$ and $2.2_{-0.5}^{+0.4} \times 10^{-40}\mbox{ cm}^2$, respectively., Comment: 7 pages, 6 figures

Published
2023
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36. Measurement of scintillation response of CsI[Na] to low-energy nuclear recoils by COHERENT

Author

Akimov, D., primary, An, P., additional, Awe, C., additional, Barbeau, P.S., additional, Becker, B., additional, Belov, V., additional, Bernardi, I., additional, Blackston, M.A., additional, Bock, C., additional, Bolozdynya, A., additional, Browning, J., additional, Cabrera-Palmer, B., additional, Chernyak, D., additional, Conley, E., additional, Daughhetee, J., additional, Detwiler, J., additional, Ding, K., additional, Durand, M.R., additional, Efremenko, Y., additional, Elliott, S.R., additional, Fabris, L., additional, Febbraro, M., additional, Gallo Rosso, A., additional, Galindo-Uribarri, A., additional, Green, M.P., additional, Heath, M.R., additional, Hedges, S., additional, Hoang, D., additional, Hughes, M., additional, Johnson, T., additional, Khromov, A., additional, Konovalov, A., additional, Kozlova, E., additional, Kumpan, A., additional, Li, L., additional, Link, J.M., additional, Liu, J., additional, Mann, K., additional, Markoff, D.M., additional, Mastroberti, J., additional, Melikyan, Y.A., additional, Mueller, P.E., additional, Newby, J., additional, Parno, D.S., additional, Penttila, S.I., additional, Pershey, D., additional, Rapp, R., additional, Ray, H., additional, Raybern, J., additional, Razuvaeva, O., additional, Reyna, D., additional, Rich, G.C., additional, Ross, J., additional, Rudik, D., additional, Runge, J., additional, Salvat, D.J., additional, Salyapongse, A.M., additional, Scholberg, K., additional, Shakirov, A., additional, Simakov, G., additional, Sinev, G., additional, Snow, W.M., additional, Sosnovtsev, V., additional, Suh, B., additional, Tayloe, R., additional, Tellez-Giron-Flores, K., additional, Tolstukhin, I., additional, Ujah, E., additional, Vanderwerp, J., additional, Varner, R.L., additional, Virtue, C.J., additional, Visser, G., additional, Wongjirad, T., additional, Yen, Y.-R., additional, Yoo, J., additional, Yu, C.-H., additional, and Zettlemoyer, J., additional

Published
2022
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37. Simulating the neutrino flux from the Spallation Neutron Source for the COHERENT experiment

Author

Akimov, D., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Blackston, M. A., Bock, C., Bolozdynya, A., Browning, J., Cabrera-Palmer, B., Chernyak, D., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Galambos, J., Gallo Rosso, A., Galindo-Uribarri, A., Green, M. P., Heath, M. R., Hedges, S., Hoang, D., Hughes, M., Iverson, E., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Link, J. M., Liu, J., Mann, K., Markoff, D. M., Mastroberti, J., McIntyre, M., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S. I., Pershey, D., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Rimal, D., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Salyapongse, A. M., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovstsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tolstukhin, I., Trotter, S., Ujah, E., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wongjirad, T., Yen, Y.R., Yoo, J., Yu, C.H., Zettlemoyer, J., and Zhang, S.

Abstract

The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory is a pulsed source of neutrons and, as a by-product of this operation, an intense source of pulsed neutrinos via stopped-pion decay. The COHERENT collaboration uses this source to investigate coherent elastic neutrino-nucleus scattering and other physics with a suite of detectors. This work includes a description of our geant4 simulation of neutrino production at the SNS and the flux calculation which informs the COHERENT studies. We estimate the uncertainty of this calculation at the ∼10% level based on validation against available low-energy π+ production data.

Published
2022
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38. COHERENT constraint on leptophobic dark matter using CsI data

Author

Akimov, D., primary, An, P., additional, Awe, C., additional, Barbeau, P. S., additional, Becker, B., additional, Belov, V., additional, Bernardi, I., additional, Blackston, M. A., additional, Bock, C., additional, Bolozdynya, A., additional, Bouabid, R., additional, Browning, J., additional, Cabrera-Palmer, B., additional, Chernyak, D., additional, Conley, E., additional, Daughhetee, J., additional, Detwiler, J., additional, Ding, K., additional, Durand, M. R., additional, Efremenko, Y., additional, Elliott, S. R., additional, Fabris, L., additional, Febbraro, M., additional, Gallo Rosso, A., additional, Galindo-Uribarri, A., additional, Green, M. P., additional, Heath, M. R., additional, Hedges, S., additional, Hoang, D., additional, Hughes, M., additional, Johnson, B. A., additional, Johnson, T., additional, Khromov, A., additional, Konovalov, A., additional, Kozlova, E., additional, Kumpan, A., additional, Li, L., additional, Link, J. M., additional, Liu, J., additional, Major, A., additional, Mann, K., additional, Markoff, D. M., additional, Mastroberti, J., additional, Mattingly, J., additional, Mueller, P. E., additional, Newby, J., additional, Parno, D. S., additional, Penttila, S. I., additional, Pershey, D., additional, Prior, C., additional, Rapp, R., additional, Ray, H., additional, Razuvaeva, O., additional, Reyna, D., additional, Rich, G. C., additional, Ross, J., additional, Rudik, D., additional, Runge, J., additional, Salvat, D. J., additional, Salyapongse, A. M., additional, Sander, J., additional, Scholberg, K., additional, Shakirov, A., additional, Simakov, G., additional, Snow, W. M., additional, Sosnovstsev, V., additional, Suh, B., additional, Tayloe, R., additional, Tellez-Giron-Flores, K., additional, Tolstukhin, I., additional, Ujah, E., additional, Vanderwerp, J., additional, Varner, R. L., additional, Virtue, C. J., additional, Visser, G., additional, Wongjirad, T., additional, Yen, Y.-R., additional, Yoo, J., additional, Yu, C.-H., additional, and Zettlemoyer, J., additional

Published
2022
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39. Measurement of scintillation response of CsI[Na] to low-energy nuclear recoils by COHERENT

Author

Akimov, D., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Blackston, M. A., Bock, C., Bolozdynya, A., Browning, J., Cabrera-Palmer, B., Chernyak, D., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Rosso, A. Gallo, Galindo-Uribarri, A., Green, M. P., Heath, M. R., Hedges, S., Hoang, D., Hughes, M., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Link, Jonathan M., Liu, J., Mann, K., Markoff, D. M., Mastroberti, J., Melikyan, Y. A., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S. I., Pershey, D., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Salyapongse, A. M., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovtsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tolstukhin, I., Ujah, E., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wongjirad, T., Yen, Y. -R., Yoo, J., Yu, C. -H., Zettlemoyer, J., Akimov, D., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Blackston, M. A., Bock, C., Bolozdynya, A., Browning, J., Cabrera-Palmer, B., Chernyak, D., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Rosso, A. Gallo, Galindo-Uribarri, A., Green, M. P., Heath, M. R., Hedges, S., Hoang, D., Hughes, M., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Link, Jonathan M., Liu, J., Mann, K., Markoff, D. M., Mastroberti, J., Melikyan, Y. A., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S. I., Pershey, D., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Salyapongse, A. M., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovtsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tolstukhin, I., Ujah, E., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wongjirad, T., Yen, Y. -R., Yoo, J., Yu, C. -H., and Zettlemoyer, J.

Abstract

We present results of several measurements of CsI[Na] scintillation response to 3-60 keV energy nuclear recoils performed by the COHERENT collaboration using tagged neutron elastic scattering experiments and an endpoint technique. Earlier results, used to estimate the coherent elastic neutrino-nucleus scattering (CEvNS) event rate for the first observation of this process achieved by COHERENT at the Spallation Neutron Source (SNS), have been reassessed. We discuss corrections for the identified systematic effects and update the respective uncertainty values. The impact of updated results on future precision tests of CEvNS is estimated. We scrutinize potential systematic effects that could affect each measurement. In particular we confirm the response of the H11934-200 Hamamatsu photomultiplier tube (PMT) used for the measurements presented in this study to be linear in the relevant signal scale region.

Published
2022

40. Monitoring the SNS basement neutron background with the MARS detector

Author

Akimov, D., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Blackston, M. A., Bock, C., Bolozdynya, A., Browning, J., Cabrera-Palmer, B., Chernyak, D., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Rosso, A. Gallo, Galindo-Uribarri, A., Green, M. P., Heath, M. R., Hedges, S., Hoang, D., Hughes, M., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Link, Jonathan M., Liu, J., Mann, K., Markoff, D. M., Mastroberti, J., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S., Pershey, D., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Salyapongse, A. M., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovstsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tolstukhin, I., Ujah, E., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wongjirad, T., Yen, Y. -R., Yoo, J., Yu, C. -H., Zettlemoyer, J., Johnson, B. A., Akimov, D., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Blackston, M. A., Bock, C., Bolozdynya, A., Browning, J., Cabrera-Palmer, B., Chernyak, D., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Rosso, A. Gallo, Galindo-Uribarri, A., Green, M. P., Heath, M. R., Hedges, S., Hoang, D., Hughes, M., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Link, Jonathan M., Liu, J., Mann, K., Markoff, D. M., Mastroberti, J., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S., Pershey, D., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Salyapongse, A. M., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Snow, W. M., Sosnovstsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tolstukhin, I., Ujah, E., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wongjirad, T., Yen, Y. -R., Yoo, J., Yu, C. -H., Zettlemoyer, J., and Johnson, B. A.

Abstract

We present the analysis and results of the first dataset collected with the MARS neutron detector deployed at the Oak Ridge National Laboratory Spallation Neutron Source (SNS) for the purpose of monitoring and characterizing the beam-related neutron (BRN) background for the COHERENT collaboration. MARS was positioned next to the COH-CsI coherent elastic neutrino-nucleus scattering detector in the SNS basement corridor. This is the basement location of closest proximity to the SNS target and thus, of highest neutrino flux, but it is also well shielded from the BRN flux by infill concrete and gravel. These data show the detector registered roughly one BRN per day. Using MARS' measured detection efficiency, the incoming BRN flux is estimated to be 1.20 ± 0.56 neutrons/m2/MWh for neutron energies above ∼3.5 MeV and up to a few tens of MeV. We compare our results with previous BRN measurements in the SNS basement corridor reported by other neutron detectors.

Published
2022

41. COHERENT constraint on leptophobic dark matter using CsI data

Author

Akimov, D., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Blackston, M. A., Bock, C., Bolozdynya, A., Bouabid, R., Browning, J., Cabrera-Palmer, B., Chernyak, D., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Rosso, A. Gallo, Galindo-Uribarri, A., Green, M. P., Heath, M. R., Hedges, S., Hoang, D., Hughes, M., Johnson, B. A., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Link, Jonathan M., Liu, J., Major, A., Mann, K., Markoff, D. M., Mastroberti, J., Mattingly, J., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S. I., Pershey, D., Prior, C., Rapp, R., Ray, H., Razuvaeva, O., Reyna, D., Rich, G. C., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Salyapongse, A. M., Sander, J., Scholberg, K., Shakirov, A., Simakov, G., Snow, W. M., Sosnovstsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tolstukhin, I., Ujah, E., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wongjirad, T., Yen, Y. -R., Yoo, J., Yu, C. -H., Zettlemoyer, J., Akimov, D., An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Blackston, M. A., Bock, C., Bolozdynya, A., Bouabid, R., Browning, J., Cabrera-Palmer, B., Chernyak, D., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Rosso, A. Gallo, Galindo-Uribarri, A., Green, M. P., Heath, M. R., Hedges, S., Hoang, D., Hughes, M., Johnson, B. A., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Li, L., Link, Jonathan M., Liu, J., Major, A., Mann, K., Markoff, D. M., Mastroberti, J., Mattingly, J., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S. I., Pershey, D., Prior, C., Rapp, R., Ray, H., Razuvaeva, O., Reyna, D., Rich, G. C., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Salyapongse, A. M., Sander, J., Scholberg, K., Shakirov, A., Simakov, G., Snow, W. M., Sosnovstsev, V., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tolstukhin, I., Ujah, E., Vanderwerp, J., Varner, R. L., Virtue, C. J., Visser, G., Wongjirad, T., Yen, Y. -R., Yoo, J., Yu, C. -H., and Zettlemoyer, J.

Abstract

We use data from the COHERENT CsI[Na] scintillation detector to constrain sub-GeV leptophobic dark matter models. This detector was built to observe low-energy nuclear recoils from coherent elastic neutrino-nucleus scattering. These capabilities enable searches for dark matter particles produced at the Spallation Neutron Source mediated by a vector portal particle with masses between 2 and 400 MeV/c2. No evidence for dark matter is observed and a limit on the mediator coupling to quarks is placed. This constraint improves upon previous results by two orders of magnitude. This newly explored parameter space probes the region where the dark matter relic abundance is explained by leptophobic dark matter when the mediator mass is roughly twice the dark matter mass. COHERENT sets the best constraint on leptophobic dark matter at these masses.

Published
2022

42. Monitoring the SNS basement neutron background with the MARS detector

Author

Akimov, D., additional, An, P., additional, Awe, C., additional, Barbeau, P.S., additional, Becker, B., additional, Belov, V., additional, Bernardi, I., additional, Blackston, M.A., additional, Bock, C., additional, Bolozdynya, A., additional, Browning, J., additional, Cabrera-Palmer, B., additional, Chernyak, D., additional, Conley, E., additional, Daughhetee, J., additional, Detwiler, J., additional, Ding, K., additional, Durand, M.R., additional, Efremenko, Y., additional, Elliott, S.R., additional, Fabris, L., additional, Febbraro, M., additional, Gallo Rosso, A., additional, Galindo-Uribarri, A., additional, Green, M.P., additional, Heath, M.R., additional, Hedges, S., additional, Hoang, D., additional, Hughes, M., additional, Johnson, T., additional, Khromov, A., additional, Konovalov, A., additional, Kozlova, E., additional, Kumpan, A., additional, Li, L., additional, Link, J.M., additional, Liu, J., additional, Mann, K., additional, Markoff, D.M., additional, Mastroberti, J., additional, Mueller, P.E., additional, Newby, J., additional, Parno, D.S., additional, Penttila, S.I., additional, Pershey, D., additional, Rapp, R., additional, Ray, H., additional, Raybern, J., additional, Razuvaeva, O., additional, Reyna, D., additional, Rich, G.C., additional, Ross, J., additional, Rudik, D., additional, Runge, J., additional, Salvat, D.J., additional, Salyapongse, A.M., additional, Scholberg, K., additional, Shakirov, A., additional, Simakov, G., additional, Sinev, G., additional, Snow, W.M., additional, Sosnovstsev, V., additional, Suh, B., additional, Tayloe, R., additional, Tellez-Giron-Flores, K., additional, Tolstukhin, I., additional, Ujah, E., additional, Vanderwerp, J., additional, Varner, R.L., additional, Virtue, C.J., additional, Visser, G., additional, Wongjirad, T., additional, Yen, Y.-R., additional, Yoo, J., additional, Yu, C.-H., additional, Zettlemoyer, J., additional, and Johnson, B.A., additional

Published
2022
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43. A D2O detector for flux normalization of a pion decay-at-rest neutrino source

Author

Akimov, D., additional, An, P., additional, Awe, C., additional, Barbeau, P.S., additional, Becker, B., additional, Belov, V., additional, Bernardi, I., additional, Blackston, M.A., additional, Bolozdynya, A., additional, Cabrera-Palmer, B., additional, Chernyak, D., additional, Conley, E., additional, Daughhetee, J., additional, Day, E., additional, Detwiler, J., additional, Ding, K., additional, Durand, M.R., additional, Efremenko, Y., additional, Elliott, S.R., additional, Fabris, L., additional, Febbraro, M., additional, Gallo Rosso, A., additional, Galindo-Uribarri, A., additional, Green, M.P., additional, Heath, M.R., additional, Hedges, S., additional, Hoang, D., additional, Hughes, M., additional, Johnson, T., additional, Khromov, A., additional, Konovalov, A., additional, Koros, J., additional, Kozlova, E., additional, Kumpan, A., additional, Li, L., additional, Link, J.M., additional, Liu, J., additional, Mann, K., additional, Markoff, D.M., additional, Mastroberti, J., additional, Mueller, P.E., additional, Newby, J., additional, Parno, D.S., additional, Penttila, S.I., additional, Pershey, D., additional, Rapp, R., additional, Ray, H., additional, Raybern, J., additional, Razuvaeva, O., additional, Reyna, D., additional, Rich, G.C., additional, Ross, J., additional, Rudik, D., additional, Runge, J., additional, Salvat, D.J., additional, Salyapongse, A.M., additional, Scholberg, K., additional, Shakirov, A., additional, Simakov, G., additional, Sinev, G., additional, Snow, W.M., additional, Sosnovstsev, V., additional, Suh, B., additional, Tayloe, R., additional, Tellez-Giron-Flores, K., additional, Tolstukhin, I., additional, Ujah, E., additional, Vanderwerp, J., additional, Varner, R.L., additional, Virtue, C.J., additional, Visser, G., additional, Ward, E.M., additional, Wiseman, C., additional, Wongjirad, T., additional, Yen, Y.-R., additional, Yoo, J., additional, Yu, C.-H., additional, and Zettlemoyer, J., additional

Published
2021
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44. Development of a 83mKr source for the calibration of the CENNS-10 liquid argon detector

Author

Akimov, D., additional, An, P., additional, Awe, C., additional, Barbeau, P.S., additional, Becker, B., additional, Belov, V., additional, Bernardi, I., additional, Blackston, M.A., additional, Blokland, L., additional, Bolozdynya, A., additional, Cabrera-Palmer, B., additional, Chen, N., additional, Chernyak, D., additional, Conley, E., additional, Daughhetee, J., additional, del Valle Coello, M., additional, Detwiler, J.A., additional, Durand, M.R., additional, Efremenko, Y., additional, Elliott, S.R., additional, Fabris, L., additional, Febbraro, M., additional, Fox, W., additional, Galindo-Uribarri, A., additional, Gallo Rosso, A., additional, Green, M.P., additional, Hansen, K.S., additional, Heath, M.R., additional, Hedges, S., additional, Hughes, M., additional, Johnson, T., additional, Khromov, A., additional, Konovalov, A., additional, Kozlova, E., additional, Kumpan, A., additional, Li, L., additional, Librande, J.T., additional, Link, J.M., additional, Liu, J., additional, Mann, K., additional, Markoff, D.M., additional, McGoldrick, O., additional, Mueller, P.E., additional, Newby, J., additional, Parno, D.S., additional, Penttila, S., additional, Pershey, D., additional, Radford, D., additional, Rapp, R., additional, Ray, H., additional, Raybern, J., additional, Razuvaeva, O., additional, Reyna, D., additional, Rich, G.C., additional, Rudik, D., additional, Runge, J., additional, Salvat, D.J., additional, Scholberg, K., additional, Shakirov, A., additional, Simakov, G., additional, Sinev, G., additional, Snow, W.M., additional, Sosnovtsev, V., additional, Suh, B., additional, Tayloe, R., additional, Tellez-Giron-Flores, K., additional, Thornton, R.T., additional, Tolstukhin, I., additional, Vanderwerp, J., additional, Varner, R.L., additional, Venkataraman, R., additional, Virtue, C.J., additional, Visser, G., additional, Wiseman, C., additional, Wongjirad, T., additional, Yang, J., additional, Yen, Y.-R., additional, Yoo, J., additional, Yu, C.-H., additional, and Zettlemoyer, J., additional

Published
2021
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45. Current status of an optically-segmented single-volume scatter camera for neutron imaging

Author

Tellez-Galindo, A, Tellez-Galindo, A, Brown, JA, Brubaker, E, Cabrera-Palmer, B, Carlson, J, Dorrill, R, Druetzler, A, Elam, J, Febbraro, M, Feng, P, Folsom, M, Galino-Tellez, A, Goldblum, BL, Hausladen, P, Kaneshige, N, Keefe, K, Laplace, TA, Learned, JG, Mane, A, Manfredi, JJ, Marleau, P, Mattingly, J, Mishra, M, Moustafa, A, Nattress, J, Nishimura, K, Steele, J, Sweany, M, Weinfurther, K, Ziock, K, Tellez-Galindo, A, Tellez-Galindo, A, Brown, JA, Brubaker, E, Cabrera-Palmer, B, Carlson, J, Dorrill, R, Druetzler, A, Elam, J, Febbraro, M, Feng, P, Folsom, M, Galino-Tellez, A, Goldblum, BL, Hausladen, P, Kaneshige, N, Keefe, K, Laplace, TA, Learned, JG, Mane, A, Manfredi, JJ, Marleau, P, Mattingly, J, Mishra, M, Moustafa, A, Nattress, J, Nishimura, K, Steele, J, Sweany, M, Weinfurther, K, and Ziock, K

Abstract

The Single-Volume Scatter Camera (SVSC) approach to kinematic neutron imaging, in which an incident neutron’s direction is reconstructed via multiple neutron-proton scattering events, potentially offers much greater efficiency and portability than current systems. In our first design of an Optically-Segmented (OS) SVSC, the detector consists of an 8×8 array of 5×5×200 mm3 bars of EJ-204 scintillator wrapped in Teflon tape, optically coupled with SensL J-series 6 x 6 mm Silicon Photomultiplier (SiPM) arrays, all inside an aluminum frame that serves as a dark box. The SiPMs are read out using custom (multi-GSPS) waveform sampling electronics. In this work, construction, characterization, and electronics updates are reported. The position, time, and energy resolutions of individual bars were obtained by measuring different scintillators with different reflectors. This work was carried out in parallel at the University of Hawaii and at Sandia National Laboratories and resulted in the preliminary design of the camera. Monte-Carlo simulations using the Geant4 toolkit were carried out for individual scintillator bars, as well as the array setup. A custom analysis using ROOT libraries in C++ simulated the SiPM response from Geant4 photon hits. This analysis framework is under development and will allow for seamless comparisons between experimental and simulated data.

Published
2020

46. The single-volume scatter camera

Author

Manfredi, JJ, Fiederle, Michael1, Burger, Arnold, Payne, Stephen A, Manfredi, JJ, Adamek, E, Brown, JA, Brubaker, E, Cabrera-Palmer, B, Cates, J, Dorrill, R, Druetzler, A, Elam, J, Feng, PL, Folsom, M, Galindo-Tellez, A, Goldblum, BL, Hausladen, P, Kaneshige, N, Keefe, K, Laplace, TA, Learned, JG, Mane, A, Marleau, P, Mattingly, J, Mishra, M, Moustafa, A, Nattress, J, Nishimura, K, Steele, J, Sweany, M, Weinfurther, K, Ziock, KP, Manfredi, JJ, Fiederle, Michael1, Burger, Arnold, Payne, Stephen A, Manfredi, JJ, Adamek, E, Brown, JA, Brubaker, E, Cabrera-Palmer, B, Cates, J, Dorrill, R, Druetzler, A, Elam, J, Feng, PL, Folsom, M, Galindo-Tellez, A, Goldblum, BL, Hausladen, P, Kaneshige, N, Keefe, K, Laplace, TA, Learned, JG, Mane, A, Marleau, P, Mattingly, J, Mishra, M, Moustafa, A, Nattress, J, Nishimura, K, Steele, J, Sweany, M, Weinfurther, K, and Ziock, KP

Abstract

The multi-institution Single-Volume Scatter Camera (SVSC) collaboration led by Sandia National Laboratories (SNL) is developing a compact, high-efficiency double-scatter neutron imaging system. Kinematic emission imaging of fission-energy neutrons can be used to detect, locate, and spatially characterize special nuclear material. Neutron-scatter cameras, analogous to Compton imagers for gamma ray detection, have a wide field of view, good event-by-event angular resolution, and spectral sensitivity. Existing systems, however, suffer from large size and/or poor efficiency. We are developing high-efficiency scatter cameras with small form factors by detecting both neutron scatters in a compact active volume. This effort requires development and characterization of individual system components, namely fast organic scintillators, photodetectors, electronics, and reconstruction algorithms. In this presentation, we will focus on characterization measurements of several SVSC candidate scintillators. The SVSC collaboration is investigating two system concepts: the monolithic design in which isotropically emitted photons are detected on the sides of the volume, and the optically segmented design in which scintillation light is channeled along scintillator bars to segmented photodetector readout. For each of these approaches, we will describe the construction and performance of prototype systems. We will conclude by summarizing lessons learned, comparing and contrasting the two system designs, and outlining plans for the next iteration of prototype design and construction.

Published
2020

47. Sensitivity of the COHERENT experiment to accelerator-produced dark matter

Author

Akimov, D., primary, An, P., additional, Awe, C., additional, Barbeau, P. S., additional, Becker, B., additional, Belov, V., additional, Blackston, M. A., additional, Bolozdynya, A., additional, Cabrera-Palmer, B., additional, Chen, N., additional, Conley, E., additional, Cooper, R. L., additional, Daughhetee, J., additional, del Valle Coello, M., additional, Detwiler, J. A., additional, Durand, M. R., additional, Efremenko, Y., additional, Elliott, S. R., additional, Fabris, L., additional, Febbraro, M., additional, Fox, W., additional, Galindo-Uribarri, A., additional, Green, M. P., additional, Hansen, K. S., additional, Heath, M. R., additional, Hedges, S., additional, Johnson, T., additional, Kaemingk, M., additional, Kaufman, L. J., additional, Khromov, A., additional, Konovalov, A., additional, Kozlova, E., additional, Kumpan, A., additional, Li, L., additional, Librande, J. T., additional, Link, J. M., additional, Liu, J., additional, Mann, K., additional, Markoff, D. M., additional, Moreno, H., additional, Mueller, P. E., additional, Newby, J., additional, Parno, D. S., additional, Penttila, S., additional, Pershey, D., additional, Radford, D., additional, Rapp, R., additional, Ray, H., additional, Raybern, J., additional, Razuvaeva, O., additional, Reyna, D., additional, Rich, G. C., additional, Rudik, D., additional, Runge, J., additional, Salvat, D. J., additional, Scholberg, K., additional, Shakirov, A., additional, Simakov, G., additional, Sinev, G., additional, Snow, W. M., additional, Sosnovtsev, V., additional, Suh, B., additional, Tayloe, R., additional, Tellez-Giron-Flores, K., additional, Thornton, R. T., additional, Tolstukhin, I., additional, Vanderwerp, J., additional, Varner, R. L., additional, Virtue, C. J., additional, Visser, G., additional, Wiseman, C., additional, Wongjirad, T., additional, Yang, J., additional, Yen, Y.-R., additional, Yoo, J., additional, Yu, C.-H., additional, and Zettlemoyer, J., additional

Published
2020
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48. First constraint on coherent elastic neutrino-nucleus scattering in argon

Author

Akimov, D., primary, Albert, J. B., additional, An, P., additional, Awe, C., additional, Barbeau, P. S., additional, Becker, B., additional, Belov, V., additional, Blackston, M. A., additional, Bolozdynya, A., additional, Cabrera-Palmer, B., additional, Cervantes, M., additional, Collar, J. I., additional, Cooper, R. L., additional, Daughhetee, J., additional, del Valle Coello, M., additional, Detwiler, J. A., additional, D’Onofrio, M., additional, Efremenko, Y., additional, Erkela, E. M., additional, Elliott, S. R., additional, Fabris, L., additional, Febbraro, M., additional, Fox, W., additional, Galindo-Uribarri, A., additional, Green, M. P., additional, Hansen, K. S., additional, Heath, M. R., additional, Hedges, S., additional, Johnson, T., additional, Kaemingk, M., additional, Kaufman, L. J., additional, Khromov, A., additional, Konovalov, A., additional, Kozlova, E., additional, Kumpan, A., additional, Li, L., additional, Librande, J. T., additional, Link, J. M., additional, Liu, J., additional, Mann, K., additional, Markoff, D. M., additional, Moreno, H., additional, Mueller, P. E., additional, Newby, J., additional, Parno, D. S., additional, Penttila, S., additional, Pershey, D., additional, Radford, D., additional, Rapp, R., additional, Ray, H., additional, Raybern, J., additional, Razuvaeva, O., additional, Reyna, D., additional, Rich, G. C., additional, Rudik, D., additional, Runge, J., additional, Salvat, D. J., additional, Scholberg, K., additional, Shakirov, A., additional, Simakov, G., additional, Sinev, G., additional, Snow, W. M., additional, Sosnovtsev, V., additional, Suh, B., additional, Tayloe, R., additional, Tellez-Giron-Flores, K., additional, Thornton, R. T., additional, Tolstukhin, I., additional, Vanderwerp, J., additional, Varner, R. L., additional, Virtue, C. J., additional, Visser, G., additional, Wiseman, C., additional, Wongjirad, T., additional, Yang, J., additional, Yen, Y.-R., additional, Yoo, J., additional, Yu, C.-H., additional, and Zettlemoyer, J., additional

Published
2019
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