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An Optimal Energy Estimator to Reduce Correlated Noise for the EXO-200 Light Readout

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arxiv 1605.06552 v2 pith:IIZODN64 submitted 2016-05-20 physics.ins-det hep-exnucl-ex

An Optimal Energy Estimator to Reduce Correlated Noise for the EXO-200 Light Readout

EXO-200 Collaboration: C.G. Davis , C. Hall , J.B. Albert , P.S. Barbeau , D. Beck , V. Belov , M. Breidenbach , T. Brunner
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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. Delaquis A. Der Mesrobian-Kabakian R. DeVoe T. Didberidze J. Dilling A. Dolgolenko M.J. Dolinski M. Dunford W. Fairbank Jr. 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. Kr\"ucken 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. Reti\`ere 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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classification physics.ins-det hep-exnucl-ex
keywords energynoisecorrelateddetectorexo-200leftoptimalresolution
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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 $\left[1.9641\pm 0.0039\right]\%$ to $\left[1.5820\pm 0.0044\right]\%$.

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