Currently, the photocathode coverage is defined as 40%, regardless of angle. In reality, this depends on the angle of incidence of each photon (see fig 4.5 in this thesis).
According to Michael Smy, Super-K uses a MC simulation to determine the precise angle-dependence. Since this is dependent on the detector design, it might not be worth the effort to do a full MC simulation until the design is finalized, but maybe we can use some approximation in the meantime?
This commit adds basic dependence on theta. The change in reconstructed energies is very small, so this should be sufficient until the HK design is finalized.
Currently, the photocathode coverage is defined as 40%, regardless of angle. In reality, this depends on the angle of incidence of each photon (see fig 4.5 in this thesis).
According to Michael Smy, Super-K uses a MC simulation to determine the precise angle-dependence. Since this is dependent on the detector design, it might not be worth the effort to do a full MC simulation until the design is finalized, but maybe we can use some approximation in the meantime?