Author/Authors :
Bourquin، نويسنده , , M. and Clerc، نويسنده , , Kerri B. and Field، نويسنده , , J.H. and Fredj، نويسنده , , L. and Richeux، نويسنده , , J.P. and Sciarrino، نويسنده , , D. and Susinno، نويسنده , , G.F.، نويسنده ,
Abstract :
A fast level-1 trigger processor for the Active Lead Ring calorimeter (ALR) and for the Very Small Angle Tagger (VSAT) of the L3 detector has been constructed and implemented. The main application is the study of single tagged two-photon collision processes at LEP II. Particular care has been taken to preserve the timing characteristics of the signal in order to allow bunch tagging in the multi-bunch mode of LEP.