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  1. Book ; Online: Event Reconstruction in a Liquid Xenon Time Projection Chamber with an Optically-Open Field Cage

    Stiegler, T. / Sangiorgio, S. / Brodsky, J. P. / Heffner, M. / Kharusi, S. Al / Anton, G. / Arnquist, I. J. / Badhrees, I. / Barbeau, P. S. / Beck, D. / Belov, V. / Bhatta, T. / Bolotnikov, A. / Breur, P. A. / Brown, E. / Brunner, T. / Caden, E. / Cao, G. F. / Cao, L. /
    Chambers, C. / Chana, B. / Charlebois, S. A. / Chiu, M. / Cleveland, B. / Coon, M. / Craycraft, A. / Dalmasson, J. / Daniels, T. / Darroch, L. / Croix, A. De St. / Der Mesrobian-Kabakian, A. / Deslandes, K. / DeVoe, R. / Di Vacri, M. L. / Dilling, J. / Ding, Y. Y. / Dolinski, M. J. / Dragone, A. / Echevers, J. / Edaltafar, F. / Elbeltagi, M. / Fabris, L. / Fairbank, D. / Fairbank, W. / Farine, J. / Ferrara, S. / Feyzbakhsh, S. / Gallina, G. / Gautam, P. / Giacomini, G. / Goeldi, D. / Gornea, R. / Gratta, G. / Hansen, E. V. / Hoppe, E. W. / Hößl, J. / House, A. / Hughes, M. / Iverson, A. / Jamil, A. / Jewell, M. J. / Jiang, X. S. / Karelin, A. / Kaufman, L. J. / Koffas, T. / Krücken, R. / Kuchenkov, A. / Kumar, K. S. / Lan, Y. / Larson, A. / Leach, K. G. / Lenardo, B. G. / Leonard, D. S. / Li, G. / Li, S. / Li, Z. / Licciardi, C. / Lv, P. / MacLellan, R. / Massacret, N. / McElroy, T. / Medina-Peregrina, M. / Michel, T. / Mong, B. / Moore, D. C. / Murray, K. / Nakarmi, P. / Natzke, C. R. / Newby, R. J. / Ni, K. / Ning, Z. / Njoya, O. / Nolet, F. / Nusair, O. / Odgers, K. / Odian, A. / Oriunno, M. / Orrell, J. L. / Ortega, G. S. / Ostrovskiy, I. / Overman, C. T. / Parent, S. / Piepke, A. / Pocar, A. / Pratte, J. -F. / Radeka, V. / Raguzin, E. / Rescia, S. / Retière, F. / Richman, M. / Robinson, A. / Rossignol, T. / Rowson, P. C. / Roy, N. / Saldanha, R. / VIII, K. Skarpaas / Soma, A. K. / St-Hilaire, G. / Stekhanov, V. / Sun, X. L. / Tarka, M. / Thibado, S. / Tidball, A. / Todd, J. / Totev, T. I. / Tsang, R. / Tsang, T. / Vachon, F. / Veeraraghavan, V. / Viel, S. / Visser, G. / Vivo-Vilches, C. / Vuilleumier, J. -L. / Wagenpfeil, M. / Wager, T. / Walent, M. / Wang, Q. / Wei, W. / Wen, L. J. / Wichoski, U. / Worcester, M. / Wu, S. X. / Wu, W. H. / Wu, X. / Xia, Q. / Yang, H. / Yang, L. / Zeldovich, O. / Zhao, J. / Zhou, Y. / Ziegler, T.

    2020  

    Abstract: nEXO is a proposed tonne-scale neutrinoless double beta decay ($0\nu\beta\beta$) experiment using liquid ${}^{136}Xe$ (LXe) in a Time Projection Chamber (TPC) to read out ionization and scintillation signals. Between the field cage and the LXe vessel, a ... ...

    Abstract nEXO is a proposed tonne-scale neutrinoless double beta decay ($0\nu\beta\beta$) experiment using liquid ${}^{136}Xe$ (LXe) in a Time Projection Chamber (TPC) to read out ionization and scintillation signals. Between the field cage and the LXe vessel, a layer of LXe ("skin" LXe) is present, where no ionization signal is collected. Only scintillation photons are detected, owing to the lack of optical barrier around the field cage. In this work, we show that the light originating in the skin LXe region can be used to improve background discrimination by 5% over previous published estimates. This improvement comes from two elements. First, a fraction of the $\gamma$-ray background is removed by identifying light from interactions with an energy deposition in the skin LXe. Second, background from ${}^{222}Rn$ dissolved in the skin LXe can be efficiently rejected by tagging the $\alpha$ decay in the ${}^{214}Bi-{}^{214}Po$ chain in the skin LXe.

    Comment: 11 pages, 12 figures
    Keywords Physics - Instrumentation and Detectors
    Subject code 571
    Publishing date 2020-09-21
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Book ; Online: Simulation of charge readout with segmented tiles in nEXO

    Li, Z. / Cen, W. R. / Robinson, A. / Moore, D. C. / Wen, L. J. / Odian, A. / Kharusi, S. Al / Anton, G. / Arnquist, I. J. / Badhrees, I. / Barbeau, P. S. / Beck, D. / Belov, V. / Bhatta, T. / Brodsky, J. P. / Brown, E. / Brunner, T. / Caden, E. / Cao, G. F. /
    Cao, L. / Chambers, C. / Chana, B. / Charlebois, S. A. / Chiu, M. / Cleveland, B. / Coon, M. / Craycraft, A. / Dalmasson, J. / Daniels, T. / Darroch, L. / Daugherty, S. J. / Croix, A. De St. / Der Mesrobian-Kabakian, A. / DeVoe, R. / Di Vacri, M. L. / Dilling, J. / Ding, Y. Y. / Dolinski, M. J. / Dragone, A. / Echevers, J. / Elbeltagi, M. / Fabris, L. / Fairbank, D. / Fairbank, W. / Farine, J. / Ferrara, S. / Feyzbakhsh, S. / Fontaine, R. / Fucarino, A. / Gallina, G. / Gautam, P. / Giacomini, G. / Goeldi, D. / Gornea, R. / Gratta, G. / Hansen, E. V. / Heffner, M. / Hoppe, E. W. / Hößl, J. / House, A. / Hughes, M. / Iverson, A. / Jamil, A. / Jewell, M. J. / Jiang, X. S. / Karelin, A. / Kaufman, L. J. / Kodroff, D. / Koffas, T. / Krücken, R. / Kuchenkov, A. / Kumar, K. S. / Lan, Y. / Larson, A. / Leach, K. G. / Lenardo, B. G. / Leonard, D. S. / Li, G. / Li, S. / Licciardi, C. / Lin, Y. H. / Lv, P. / MacLellan, R. / McElroy, T. / Medina-Peregrina, M. / Michel, T. / Mong, B. / Murray, K. / Nakarmi, P. / Natzke, C. R. / Newby, R. J. / Ning, Z. / Njoya, O. / Nolet, F. / Nusair, O. / Odgers, K. / Oriunno, M. / Orrell, J. L. / Ortega, G. S. / Ostrovskiy, I. / Overman, C. T. / Parent, S. / Piepke, A. / Pocar, A. / Pratte, J. -F. / Radeka, V. / Raguzin, E. / Rescia, S. / Retière, F. / Richman, M. / Rossignol, T. / Rowson, P. C. / Roy, N. / Runge, J. / Saldanha, R. / Sangiorgio, S. / VIII, K. Skarpaas / Soma, A. K. / St-Hilaire, G. / Stekhanov, V. / Stiegler, T. / Sun, X. L. / Tarka, M. / Todd, J. / Tolba, T. / Totev, T. I. / Tsang, R. / Tsang, T. / Vachon, F. / Veeraraghavan, V. / Viel, S. / Visser, G. / Vivo-Vilches, C. / Vuilleumier, J. -L. / Wagenpfeil, M. / Walent, M. / Wang, Q. / Ward, M. / Watkins, J. / Weber, M. / Wei, W. / Wichoski, U. / Wu, S. X. / Wu, W. H. / Wu, X. / Xia, Q. / Yang, H. / Yang, L. / Yen, Y. -R. / Zeldovich, O. / Zhao, J. / Zhou, Y. / Ziegler, T.

    2019  

    Abstract: nEXO is a proposed experiment to search for the neutrino-less double beta decay ($0\nu\beta\beta$) of $^{136}$Xe in a tonne-scale liquid xenon time projection chamber (TPC). The nEXO TPC will be equipped with charge collection tiles to form the anode. In ...

    Abstract nEXO is a proposed experiment to search for the neutrino-less double beta decay ($0\nu\beta\beta$) of $^{136}$Xe in a tonne-scale liquid xenon time projection chamber (TPC). The nEXO TPC will be equipped with charge collection tiles to form the anode. In this work, the charge reconstruction performance of this anode design is studied with a dedicated simulation package. A multi-variate method and a deep neural network are developed to distinguish simulated $0\nu\beta\beta$ signals from backgrounds arising from trace levels of natural radioactivity in the detector materials. These simulations indicate that the nEXO TPC with charge-collection tiles shows promising capability to discriminate the $0\nu\beta\beta$ signal from backgrounds. The estimated half-life sensitivity for $0\nu\beta\beta$ decay is improved by $\sim$20$~(32)\%$ with the multi-variate~(deep neural network) methods considered here, relative to the sensitivity estimated in the nEXO pre-conceptual design report.
    Keywords Physics - Instrumentation and Detectors ; Nuclear Experiment
    Subject code 621
    Publishing date 2019-07-17
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Book ; Online: Reflectivity and PDE of VUV4 Hamamatsu SiPMs in Liquid Xenon

    Nakarmi, P. / Ostrovskiy, I. / Soma, A. K. / Retiere, F. / Kharusi, S. Al / Alfaris, M. / Anton, G. / Arnquist, I. J. / Badhrees, I. / Barbeau, P. S. / Beck, D. / Belov, V. / Bhatta, T. / Blatchford, J. / Breur, P. A. / Brodsky, J. P. / Brown, E. / Brunner, T. / Mamahit, S. Byrne /
    Caden, E. / Cao, G. F. / Cao, L. / Chambers, C. / Chana, B. / Charlebois, S. A. / Chiu, M. / Cleveland, B. / Coon, M. / Craycraft, A. / Dalmasson, J. / Daniels, T. / Darroch, L. / Croix, A. De St. / Der Mesrobian-Kabakian, A. / DeVoe, R. / Di Vacri, M. L. / Dilling, J. / Ding, Y. Y. / Dolinski, M. J. / Doria, L. / Dragone, A. / Echevers, J. / Edaltafar, F. / Elbeltagi, M. / Fabris, L. / Fairbank, D. / Fairbank, W. / Farine, J. / Ferrara, S. / Feyzbakhsh, S. / Fontaine, R. / Fucarino, A. / Gallina, G. / Gautam, P. / Giacomini, G. / Goeldi, D. / Gornea, R. / Gratta, G. / Hansen, E. V. / Heffner, M. / Hoppe, E. W. / Hößle, J. / House, A. / Hughes, M. / Iverson, A. / Jamil, A. / Jewell, M. J. / Jiang, X. S. / Karelin, A. / Kaufman, L. J. / Koffas, T. / Krücken, R. / Kuchenkov, A. / Kumar, K. S. / Lan, Y. / Larson, A. / Leach, K. G. / Lenardo, B. G. / Leonard, D. S. / Li, G. / Li, S. / Li, Z. / Licciardi, C. / Lv, P. / MacLellan, R. / Massacret, N. / McElroy, T. / Medina-Peregrina, M. / Michel, T. / Mong, B. / Moore, D. C. / Murray, K. / Natzke, C. R. / Newby, R. J. / Ning, Z. / Njoya, O. / Nolet, F. / Nusair, O. / Odgers, K. / Odian, A. / Oriunno, M. / Orrell, l J. L. / Ortega, G. S. / Overman, C. T. / Parent, S. / Piepke, A. / Pocar, A. / Pratte, J. -F. / Radeka, V. / Raguzin, E. / Rescia, S. / Richman, M. / Robinson, A. / Rossignol, T. / Rowson, P. C. / Roy, N. / Runge, J. / Saldanha, R. / Sangiorgio, S. / VIII, K. Skarpaas / St-Hilaire, G. / Stekhanov, r V. / Stiegler, T. / Sun, X. L. / Tarka, M. / Todd, J. / Totev, T. I. / Tsang, R. / Tsang, T. / Vachon, F. / Veeraraghavan, V. / Viel, S. / Visser, G. / Vivo-Vilches, C. / Vuilleumier, J. -L. / Wagenpfeil, M. / Wager, T. / Walent, M. / Wang, Q. / Ward, M. / Watkins, J. / Weber, M. / Wei, W. / Wen, L. J. / Wichoski, U. / Wu, S. X. / Wu, W. H. / Wu, X. / Xia, Q. / Yang, H. / Yang, L. / Zeldovich, O. / Zhao, J. / Zhou, Y. / Ziegler, T.

    2019  

    Abstract: Understanding reflective properties of materials and photodetection efficiency (PDE) of photodetectors is important for optimizing energy resolution and sensitivity of the next generation neutrinoless double beta decay, direct detection dark matter, and ... ...

    Abstract Understanding reflective properties of materials and photodetection efficiency (PDE) of photodetectors is important for optimizing energy resolution and sensitivity of the next generation neutrinoless double beta decay, direct detection dark matter, and neutrino oscillation experiments that will use noble liquid gases, such as nEXO, DARWIN, DarkSide-20k, and DUNE. Little information is currently available about reflectivity and PDE in liquid noble gases, because such measurements are difficult to conduct in a cryogenic environment and at short enough wavelengths. Here we report a measurement of specular reflectivity and relative PDE of Hamamatsu VUV4 silicon photomultipliers (SiPMs) with 50 micrometer micro-cells conducted with xenon scintillation light (~175 nm) in liquid xenon. The specular reflectivity at 15 deg. incidence of three samples of VUV4 SiPMs is found to be 30.4+/-1.4%, 28.6+/-1.3%, and 28.0+/-1.3%, respectively. The PDE at normal incidence differs by +/-8% (standard deviation) among the three devices. The angular dependence of the reflectivity and PDE was also measured for one of the SiPMs. Both the reflectivity and PDE decrease as the angle of incidence increases. This is the first measurement of an angular dependence of PDE and reflectivity of a SiPM in liquid xenon.

    Comment: 21 pages, 15 figures, 6 tables. As accepted by JINST
    Keywords Physics - Instrumentation and Detectors ; High Energy Physics - Experiment
    Subject code 621
    Publishing date 2019-10-14
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Book ; Online: Measurements of electron transport in liquid and gas Xenon using a laser-driven photocathode

    Njoya, O. / Tsang, T. / Tarka, M. / Fairbank, W. / Kumar, K. S. / Rao, T. / Wager, T. / Kharusi, S. Al / Anton, G. / Arnquist, I. J. / Badhrees, I. / Barbeau, P. S. / Beck, D. / Belov, V. / Bhatta, T. / Brodsky, J. P. / Brown, E. / Brunner, T. / Caden, E. /
    Cao, G. F. / Cao, L. / Cen, W. R. / Chambers, C. / Chana, B. / Charlebois, S. A. / Chiu, M. / Cleveland, B. / Coon, M. / Craycraft, A. / Dalmasson, J. / Daniels, T. / Darroch, L. / Daugherty, S. J. / Croix, A. De St. / Der Mesrobian-Kabakian, A. / DeVoe, R. / Di Vacri, M. L. / Dilling, J. / Ding, Y. Y. / Dolinski, M. J. / Dragone, A. / Echevers, J. / Elbeltagi, M. / Fabris, L. / Fairbank, D. / Farine, J. / Ferrara, S. / Feyzbakhsh, S. / Fontaine, R. / Fucarino, A. / Gallina, G. / Gautam, P. / Giacomini, G. / Goeldi, D. / Gornea, R. / Gratta, G. / Hansen, E. V. / Heffner, M. / Hoppe, E. W. / Hossl, J. / House, A. / Hughes, M. / Iverson, A. / Jamil, A. / Jewell, M. J. / t / Jiang, X. S. / Karelin, A. / Kaufman, L. J. / Kodroff, D. / Koffas, T. / Krucken, R. / Kuchenkov, A. / Lan, Y. / Larson, A. / Leach, K. G. / Lenardo, B. G. / Leonard, D. S. / Li, G. / Li, S. / Li, Z. / Licciardi, C. / Lin, Y. H. / Lv, P. / MacLellan, R. / McElroy, T. / Medina-Peregrina, M. / Michel, T. / Mong, B. / Moore, D. C. / Murray, K. / Nakarmi, P. / Natzke, C. R. / Newby, R. J. / Ning, Z. / Nolet, F. / Nusair, O. / Odgers, K. / Odian, A. / Oriunno, M. / Orrell, J. L. / Ortega, G. S. / Ostrovskiy, I. / Overman, C. T. / Parent, S. / Piepke, A. / Pocar, A. / Pratte, J. -F. / Radeka, V. / Raguzin, E. / Rescia, S. / Retiere, F. / Richman, M. / Robinson, A. / Rossignol, T. / Rowson, P. C. / Roy, N. / Runge, J. / Saldanha, R. / Sangiorgio, S. / VIII, K. Skarpaas / Soma, A. K. / St-Hilaire, G. / Stekhanov, V. / Stiegler, T. / Sun, X. L. / Todd, J. / Tolba, T. / Totev, T. I. / Tsang, R. / Vachon, F. / Veeraraghavan, V. / Viel, S. / Visser, G. / Vivo-Vilches, C. / Vuilleumier, J. -L. / Wagenpfeil, M. / Walent, M. / Wang, Q. / Ward, M. / Watkins, J. / Weber, M. / Wei, W. / Wen, L. J. / Wichoski, U. / Wu, S. X. / Wu, W. H. / Wu, X. / Xia, Q. / Yang, H. / Yang, L. / Yen, Y. -R. / Zeldovich, O. / Zhao, J. / Zhou, Y. / Ziegler, T.

    2019  

    Abstract: Measurements of electron drift properties in liquid and gaseous xenon are reported. The electrons are generated by the photoelectric effect in a semi-transparent gold photocathode driven in transmission mode with a pulsed ultraviolet laser. The charges ... ...

    Abstract Measurements of electron drift properties in liquid and gaseous xenon are reported. The electrons are generated by the photoelectric effect in a semi-transparent gold photocathode driven in transmission mode with a pulsed ultraviolet laser. The charges drift and diffuse in a small chamber at various electric fields and a fixed drift distance of 2.0 cm. At an electric field of 0.5 kV/cm, the measured drift velocities and corresponding temperature coefficients respectively are $1.97 \pm 0.04$ mm/$\mu$s and $(-0.69\pm0.05)$\%/K for liquid xenon, and $1.42 \pm 0.03$ mm/$\mu$s and $(+0.11\pm0.01)$\%/K for gaseous xenon at 1.5 bar. In addition, we measure longitudinal diffusion coefficients of $25.7 \pm 4.6$ cm$^2$/s and $149 \pm 23$ cm$^2$/s, for liquid and gas, respectively. The quantum efficiency of the gold photocathode is studied at the photon energy of 4.73 eV in liquid and gaseous xenon, and vacuum. These charge transport properties and the behavior of photocathodes in a xenon environment are important in designing and calibrating future large scale noble liquid detectors.
    Keywords Physics - Instrumentation and Detectors ; Nuclear Experiment
    Subject code 660
    Publishing date 2019-11-24
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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