Trigger study for GMSB with photons

We present a trigger study for the gauge-mediated SUSY breaking (GMSB) searches at CMS. As a result of the study, we propose to use two new high level triggers based on the electromagnetic calorimeter: EM-high-$E_T$ and EM-very-high-$E_T$, along with the existing double-photon trigger. As a result of the study, we developed a new method for optimization of the trigger thresholds, which uses $log(\epsilon)/log(b)$ as the optimization criteria, where $\epsilon$ ($b$) is the trigger efficiency for signal (background).