Simulation of charge readout with segmented tiles in nEXO

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

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

nEXO is a proposed experiment to search for the neutrino-less double beta decay (0νββ) of 136Xe 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 0νββ 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 0νββ signal from backgrounds. The estimated half-life sensitivity for 0νββ decay is improved by ∼20 (32)% with the multi-variate (deep neural network) methods considered here, relative to the sensitivity estimated in the nEXO pre-conceptual design report.

Original languageEnglish
Article numberP09020
JournalJournal of Instrumentation
Volume14
Issue number9
DOIs
StatePublished - Sep 24 2019

Bibliographical note

Publisher Copyright:
© 2019 IOP Publishing Ltd and Sissa Medialab.

Funding

This work has been supported by the Offices of Nuclear and High Energy Physics within DOE's Office of Science, and NSF in the United States, by NERSC, CFI, FRQNT, NRC, and the McDonald Institute (CFREF) in Canada, by IBS in Korea, by RFBR (18-02-00550) in Russia, and by CAS and NSFC in China. This work was supported in part by Laboratory Directed Research and Development (LDRD) programs at Brookhaven National Laboratory (BNL), Lawrence Livermore National Laboratory (LLNL), Oak Ridge National Laboratory (ORNL) and Pacific Northwest National Laboratory (PNNL). This work has been supported by the Offices of Nuclear and High Energy Physics within DOE’s Office of Science, and NSF in the United States, by NERSC, CFI, FRQNT, NRC, and the McDonald Institute (CFREF) in Canada, by IBS in Korea, by RFBR (18-02-00550) in Russia, and by CAS and NSFC in China. This work was supported in part by Laboratory Directed Research and Development (LDRD) programs at Brookhaven National Laboratory (BNL), Lawrence Livermore National Laboratory (LLNL), Oak Ridge National Laboratory (ORNL) and Pacific Northwest National Laboratory (PNNL).

FundersFunder number
Center for African Studies
International Biometric Society
Department of Energy offices of High Energy Physics and Nuclear Physics
Cummings Foundation
National Energy Research Scientific Computing Center
Canada Foundation for Innovation
McDonald Institute
Institute for Basic Science (IBS)
National Research Council
DOE's Office of Science
National Natural Science Foundation of China (NSFC)
Fonds de Recherche du Québec - Nature et Technologies
NERSC/LBNL
Lawrence Livermore National Laboratory
Laboratory Directed Research and Development
Chinese Academy of Sciences
Canada First Research Excellence Fund
National Sleep Foundation
Brookhaven National Laboratory (BNL)
Russian Foundation for Basic Research18-02-00550
National Science Foundation Arctic Social Science Program1833095
Pacific Northwest National LaboratoryPNNL
Oak Ridge National LaboratoryORNL

    Keywords

    • Double-beta decay detectors
    • Noble liquid detectors (scintillation, ionization, doublephase)

    ASJC Scopus subject areas

    • Mathematical Physics
    • Instrumentation

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