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

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Published 19 July 2016 © 2016 IOP Publishing Ltd and Sissa Medialab srl
, , Citation C.G. Davis et al 2016 JINST 11 P07015 DOI 10.1088/1748-0221/11/07/P07015

1748-0221/11/07/P07015

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]%.

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10.1088/1748-0221/11/07/P07015