  The goal of the international Muon Ionization Cooling Experiment (MICE) is to
demonstrate muon beam ionization cooling for the first time. It constitutes a
key part of the R&D towards a future neutrino factory or muon collider. The
intended MICE precision requires the development of analysis tools that can
account for any effects (e.g., optical aberrations) which may lead to
inaccurate cooling measurements. Non-parametric density estimation techniques,
in particular, kernel density estimation (KDE), allow very precise calculations
of the muon beam phase-space density and its increase as a result of cooling.
In this study, kernel density estimation technique and its application to
measuring the reduction in MICE muon beam phase-space volume is investigated.
