Author/Authors :
Zoccarato، نويسنده , , Y. and Tromeur، نويسنده , , W. and Aguilar، نويسنده , , S. and Alfaro، نويسنده , , R. and Almaraz Avina، نويسنده , , E. and Anzo، نويسنده , , A. and Belmont، نويسنده , , E. and Cheshkov، نويسنده , , C. and Cheynis، نويسنده , , B. and Combaret، نويسنده , , C. and Contreras، نويسنده , , G. and Cuautle، نويسنده , , E. and Ducroux، نويسنده , , L. and Gonzalez Trueba، نويسنده , , L. and Grabski، نويسنده , , V. and Grossiord، نويسنده , , J.-Y. and Herrera Corral، نويسنده , , G. and Martinez، نويسنده , , A. and Massacrier، نويسنده , , L. and Menchaca-Rocha، نويسنده , , A. and Montano، نويسنده , , L.M. and Paic، نويسنده , , G. and Perez، نويسنده , , Marcela C. and Sandoval، نويسنده , , A. and Tieulent، نويسنده , , R. and Valencia Paolomo، نويسنده , , L. and Vanzetto، نويسنده , , S.، نويسنده ,
Abstract :
This paper gives a detailed description of the acquisition and trigger electronics especially designed for the V0 detector of ALICE at LHC. A short presentation of the detector itself is given before the description of the Front End Electronics (FEE) system, which is completely embedded within the LHC environment as far as acquisition (DAQ), trigger (CTP), and detector control (DCS) are concerned. It is able to detect on-line coincident events and to achieve charge (with a precision of 0.6 pC) and time measurements (with a precision of 100 ps). It deploys quite a simple architecture. It is however totally programmable and fully non-standard in discriminating events coming from Beam–Beam interaction and Beam-Gas background. Finally, raw data collected from the first LHC colliding beams illustrate the performance of the system.
Keywords :
V0 , Beam-gas trigger , Minimum bias trigger , Centrality trigger , Flag detection , Observation window , ALICE , Charge integrator , HPTDC , Front end electronic , LHC , V0C , V0A
