  Hyper-Kamiokande is a proposed next-generation water Cherenkov detector. If a
galactic supernova happens, it will deliver a high event rate
($\mathcal{O}(10^5)$ neutrino events in total) as well as event-by-event energy
information. Recent supernova simulations exhibit the Standing Accretion Shock
Instability (SASI) which causes oscillations in the number flux and mean energy
of neutrinos. The amplitude of these oscillations is energy-dependent, so the
energy information available in Hyper-Kamiokande could be used to improve the
detection prospects of these SASI oscillations. To determine whether this can
be achieved in the presence of detector effects like backgrounds and finite
energy uncertainty, we have started work on a detailed simulation of
Hyper-Kamiokande's response to a supernova neutrino burst.
