In-situ calibration of the single-photoelectron charge response of the IceCube photomultiplier tubes

Abstract

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.

27 pages, 11 figures

References in corpus (3)

• IceCube: An Instrument for Neutrino Astronomy
• Transit Time and Charge Correlations of Single Photoelectron Events in R7081 PMTs
• Characterization of the Hamamatsu R11780 12 inch Photomultiplier Tube

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