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In-situ calibration of the single-photoelectron charge response of the IceCube photomultiplier tubes
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In-situ calibration of the single-photoelectron charge response of the IceCube photomultiplier tubes
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We describe an improved in-situ calibration of the single-photoelectron charge distributions for each of the in-ice Hamamatsu Photonics R7081-02[MOD] photomultiplier tubes in the IceCube Neutrino Observatory. The characterization of the individual PMT charge distributions is important for PMT calibration, data and Monte Carlo simulation agreement, and understanding the effect of hardware differences within the detector. We discuss the single photoelectron identification procedure and how we extract the single-photoelectron charge distribution using a deconvolution of the multiple-photoelectron charge distribution.
Forward citations
Cited by 3 Pith papers
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Constraints on long-range neutrino interactions from a variety of $U(1)^\prime$ symmetries using atmospheric neutrinos at IceCube DeepCore
No evidence for long-range neutrino interactions from a broad class of anomaly-free U(1)' symmetries is found in 8 years of IceCube DeepCore atmospheric data, producing stringent constraints on the corresponding LRI p...
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Search for GeV-scale Dark Matter from the Galactic Center with IceCube-DeepCore
Using 9.28 years of IceCube-DeepCore data, no dark-matter neutrino signal is found from the Galactic Center, setting the strongest neutrino-telescope limits for GeV-scale annihilation and decay.
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The mathematical theory of photomultiplier tube calibration
Fitting an SPE response model to the charge spectrum recovers PMT gain to better than ~1% and outperforms the model-independent occupancy method, even when a soft under-amplified component is present.
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