EXO-200 measured the absolute ionization and scintillation yields of liquid xenon at 1.1-2.6 MeV, finding a W-value of 11.5 eV and a recombination-independent energy scale about 15% below the NEST simulation prediction.
An Optimal Energy Estimator to Reduce Correlated Noise for the EXO-200 Light Readout
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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 $\left[1.9641\pm 0.0039\right]\%$ to $\left[1.5820\pm 0.0044\right]\%$.
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physics.ins-det 1years
2019 1verdicts
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Measurement of the scintillation and ionization response of liquid xenon at MeV energies in the EXO-200 experiment
EXO-200 measured the absolute ionization and scintillation yields of liquid xenon at 1.1-2.6 MeV, finding a W-value of 11.5 eV and a recombination-independent energy scale about 15% below the NEST simulation prediction.