  The NA62 experiment at CERN SPS aims to measure the Branching Ratio of the
very rare kaon decay K+ -> pi+ nu nubar collecting O(100) events with a 10%
background to make a stringent test of the Standard Model. One of the main
backgrounds to the proposed measurement is represented by the K+ -> pi+ pi0
decay. To suppress this background an efficient photo veto system is foreseen.
In the 1-10 mrad angular region the NA48 high performance liquid krypton
electromagnetic calorimeter is used. The design, implementation and current
status of the Liquid Krypton Electromagnetic Calorimeter Level 0 Trigger are
presented.
