Studying of the SuperFGD Response Using Stopped Cosmic Muons

SuperFGD (Super Fine-Grained Detector) is a part of the ND280 near detector complex for the T2K and Hyper-Kamiokande experiments. SuperFGD is a fully active and highly granular scintillator neutrino detector. It consists of $${\sim}$$ 2 million scintillation cubes, which allow reconstruction of particles going in all directions. A good understanding of the SuperFGD response is important for further physics studies. This paper covers selection of atmospheric muons stopped inside the sensitive volume of the detector including their decays. Muons were selected by applying geometrical constraints and searching for subsequent electrons or positrons. The Bragg curve built using the muon energy release along its track is sensitive not only to energy scale but also to the nonlinear effect such as the Birks’ saturation.