Trigger simulation for 2004-2005

LNF, 1 Feb 2006M.Palutan and B.Sciascia for the Trigger group

• Trigger data quality• Calorimeter trigger threshold calibration• DC trigger threshold calibration

Trigger data quality

critical issues:

• hardware errors from TORTA board CALO trigger information in the decision board is not compatible with what observed at the sector’s level• bad RF signal from DAFNE some clocks are lost by the RF/4-T1 sinch. chain wrong event-t0, bad calo time resolution.• missing veto at injection (not critical, possibly higher bkg)

results:• list of “bad” runs

Summary: All runs 2004 2005

N-A NOT-reco reco (nb-1) (nb-1) (nb-1)-------------------------------------------------------------------------------------------------

Torta-bad OR (t0-bad>0.01%) 101 18250 9157

NO-inj-veto 0 755 11980

NO physmon info 48 3024 12580

• Updated run list ready

Rejected

DB2 flag(No-INJ)

Data quality vs run number

Bad trigger conditions No PHYSMON info

20042005

20042005

20042005

20042005Not-Reco Not-Reco

RecoReco

Calorimeter trigger threshold calibration

Control samples:

• Kcrash+autoTRG + KS 00 (“photons”) + KS + (“pions”)• Single sector threshold evaluation for data and MC• 2004-2005 data set divided in 20 periods of about 100 pb-1

according to main HW interventions and machine stops.

Results:• Comparison of Data and MC photon thresholds MC thr settings (already in DB2).

Photons on the barrel (before calibration)

data

MC data/MCZ(cm)

Th

(MeV

)T

h(M

eV)

Z(cm)

5%

5%

Photons on the barrel (after calibration)

Data

MC data/MCZ(cm)

Th

(MeV

)T

h(M

eV)

Z(cm)

Photons on the EndCaps (after calibration)

dataMC

data/MC

Y(cm)

Th

(MeV

)T

h(M

eV)

Y(cm)

Th

(MeV

)T

h(M

eV)

Y(cm)

Y(cm)

Photon trigger sector multiplicity

Barrel

East

West

dataMC

<

Pion trigger sector multiplicity

Barrel

East

West

dataMC

MC efficiency spread for a +/- 5% overall threshold drift

Ke3

K3

0

0

KS00

KL decay

0.5%

MC efficiency spread for a +/- 5% overall threshold drift

KS+-

KL decay

0

0

Ke3

K3

1%

Cosmic veto barrel multiplicity

Barrel BarreldataMC

Photons Pions

DC trigger threshold calibration

Control sample:

• Kcrash+autoTRG + KS +

• DC trigger efficiency on events triggered by CALO, evaluated on Data and MC.• 2004-2005 data set divided in 20 periods of about 100 pb-1

according to main HW interventions and machine stops.

Results:• Comparison of Data and MC DC trigger efficiency MC DC2 thr settings (already in DB2).

DC2 EfficiencyDC2 Efficiency

Data period

20042005

70 75 80 85

DC2thr

1 DC2thr 0.5 %

DataDC2 efficiency vs data taking periods

MCDC2 efficiency scan vs threshold applied in MC

Spares

TORTA hardware errors

Bad RF/4

Injection veto

Summary (RUN_NR 36 904, 30/05/05)

N-A NOT-reco reco # of run (nb-1) (nb-1) (nb-1)-------------------------------------------------------------------------------------------------

NO phystrig info 102 4416 14750 194

Torta-bad OR (t0-bad>0.1%) 101 17270 2193 121 …+ (t0-bad>0.01%) 0. 843 6308 36

… + NO-inj-veto 0. 633 11050 83 • Run list ready

Data quality vs run number

Bad trigger conditions No PHYSMON info