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FEE2006 Perugia May 2006

Philippe Farthouat, CERN

Pileup in LAr Calorimeter (1)

Shaper : optimizes signal to noise ratio between electronics noise and pileup noise

Differentiation to Remove long trailing edge of Lar signal

Electronics : ENI = A/tp3/2 + B/√tp

Pileup : ENE = C√tp

Vary with location and luminosity…

Pileup at 1035

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