An optimal energy estimator to reduce correlated noise for the EXO-200 light readout

C. G. Davis, C. Hall, J. B. Albert, P. S. Barbeau, D. Beck, V. Belov, M. Breidenbach, T. Brunner, A. Burenkov, G. F. Cao, W. R. Cen, C. Chambers, B. Cleveland, M. Coon, A. Craycraft, T. Daniels, M. Danilov, S. J. Daugherty, J. Davis, S. DelaquisA. Der Mesrobian-Kabakian, R. Devoe, T. Didberidze, J. Dilling, A. Dolgolenko, M. J. Dolinski, M. Dunford, W. Fairbank, J. Farine, W. Feldmeier, S. Feyzbakhsh, P. Fierlinger, D. Fudenberg, R. Gornea, K. Graham, G. Gratta, M. Hughes, M. J. Jewell, A. Johnson, T. N. Johnson, S. Johnston, A. Karelin, L. J. Kaufman, R. Killick, T. Koffas, S. Kravitz, R. Krücken, A. Kuchenkov, K. S. Kumar, D. S. Leonard, C. Licciardi, Y. H. Lin, J. Ling, R. MacLellan, M. G. Marino, B. Mong, D. Moore, O. Njoya, R. Nelson, A. Odian, I. Ostrovskiy, A. Piepke, A. Pocar, C. Y. Prescott, F. Retière, P. C. Rowson, J. J. Russell, A. Schubert, D. Sinclair, E. Smith, V. Stekhanov, M. Tarka, T. Tolba, R. Tsang, K. Twelker, J. L. Vuilleumier, A. Waite, J. Walton, T. Walton, M. Weber, L. J. Wen, U. Wichoski, J. Wood, L. Yang, Y. R. Yen, O. Ya Zeldovich

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11 Scopus citations

Abstract

The energy resolution of the EXO-200 detector is limited by electronics noise in the measurement of the scintillation response. Here we present a new technique to extract optimal scintillation energy measurements for signals split across multiple channels in the presence of correlated noise. The implementation of these techniques improves the energy resolution of the detector at the neutrinoless double beta decay Q-value from [1.9641 ± 0.0039]% to [1.5820 ± 0.0044]%.

Original languageEnglish
Article numberP07015
JournalJournal of Instrumentation
Volume11
Issue number7
DOIs
StatePublished - 19 Jul 2016
Externally publishedYes

Keywords

  • Analysis and statistical methods
  • Data processing methods
  • Double-beta decay detectors
  • Noble liquid detectors (scintillation
  • double-phase)
  • ionization

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