Different aerogel samples

Photon yield of the aerogel sample and the aerogel reversed sample

HV scan for all three photon detectors

Photon yield of combinations of aerogels with different refractive index, i.e. focusing and defocusing setup

angular dependence of the focusing and defocusing type setup

momentum dependence of the focusing and defocusing type setup

double radiator at p=+4GeV/c

high statistics run with single radiator