# Figure 1

 Determination of trigger rejection factors for the used PHOS-L0 and EMC-L0/L1 triggers. The raw spectra of photon candidates for each trigger combination given in the legend are used to obtain the respective ratio of yields. The obtained distributions are then fitted with a constant in the illustrated energy ranges, yielding the quoted $RF$s. The uncertainties of $RF$ determination are indicated in light colored uncertainty bands.