Abstract

The KamLAND detector with an overburden of 2700 m.w.e. measures a muon rate of 0.33 Hz through the inner detector. The neutrons and light nuclei produced by these muons are a significant background to both the reactor neutrino analysis and future solar neutrino analysis. A new detector is being constructed on deck to track a subset of muons as they pass through the inner detector or the surrounding rock. These data will be used to study KamLANDʼs muon detecting and tracking efficiencies and the production of neutrons and light nuclei from muon spallation.

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