Pile-Up Pulse Decomposition

Jia-Ye Chen2007.08.29

Outline

• Much tighter pile-up pulse selection with different ADC & TDC cut conditions

• Residual of Pad, Residual of Z and Efficiency (90,000 events with different targets)

• Event display to check track pile-up (vertex point is out of target)

Much Tighter Selection Algorithm

)1(parprevMinAdc

cnextPeakAd

)2(parprevMinTdccnextPeakTd

ADC (2,3,4,5,8,10,16,20)

TDC (3,4,5,6,7,8,9,10)

Residual of PadC CH2

Cu

Residual of ZC CH2

Cu

EfficiencyC CH2

Cu

Track Pile-up Check

Criteria• trkQualt = 1• numHitst > 5• qq1 * qq2 = -1• momt(4,:) < 1.0 GeV/c• separation between vertex point and tar

get center > 40 mm