Author/Authors :
Adinolfi، نويسنده , , M and Ambrosino، نويسنده , , F and Antonelli، نويسنده , , M and Bini، نويسنده , , C and Bocci، نويسنده , , V and Bossi، نويسنده , , F and Branchini، نويسنده , , P and Cabibbo، نويسنده , , G and Caloi، نويسنده , , R and Casarsa، نويسنده , , M and Cataldi، نويسنده , , G and Ciambrone، نويسنده , , P and De Lucia، نويسنده , , E and De Robertis، نويسنده , , G and De Simone، نويسنده , , P and Dell’ Agnello، نويسنده , , S and De، نويسنده ,
Abstract :
We present the design of the trigger system for the KLOE experiment at the Frascati φ-factory DAΦNE. The detector consists of a large-volume drift chamber and a calorimeter both immersed in a 0.52 T solenoidal field. The trigger, structured with a first- and a second-decision level, is based on the multiplicity of energy deposits in the calorimeter and of hits in the drift chamber. The selection criteria are described and the efficiency for detecting φ decays is evaluated using data.
Keywords :
trigger , KLOE , Calorimeter , Drift chamber
