Trigger simulation for 2004 2005 Trigger data quality

Trigger simulation for 2004 -2005 • Trigger data quality • Calorimeter trigger threshold calibration • DC trigger threshold calibration LNF, 1 Feb 2006 M. Palutan and B. Sciascia for the Trigger group

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 -T 1 sinch. chain wrong event-t 0, 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 (nb-1) ------------------------------------------------Torta-bad OR (t 0 -bad>0. 01%) 101 NO-inj-veto 0 NO physmon info 48 • Updated run list ready 18250 9157 Rejected 755 11980 DB 2 flag (No-INJ) 3024 12580

Data quality vs run number 2004 Not-Reco 2005 2004 Reco 2005 Bad trigger conditions 2005 No PHYSMON info

Calorimeter trigger threshold calibration Control samples: • Kcrash+auto. TRG + KS p 0 p 0 (“photons”) + KS p+p (“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 DB 2).

Th(Me. V) Photons on the barrel (before calibration) 5% data Z(cm) data/MC Th(Me. V) MC 5% Z(cm)

Th(Me. V) Photons on the barrel (after calibration) Z(cm) Th(Me. V) Data MC Z(cm) data/MC

Photons on the End. Caps (after calibration) Th(Me. V) Y(cm) Th(Me. V) data MC data/MC Y(cm)

Photon trigger sector multiplicity East data MC Barrel d < 1% West

Pion trigger sector multiplicity East data MC Barrel d 2 3% West

MC efficiency spread for a +/- 5% overall threshold drift p 0 p 0 p 0 KS p 0 p 0 d 0. 5% p +p -p 0 Ke 3 Km 3 KL decay

MC efficiency spread for a +/- 5% overall threshold drift KS p+p- d 1% p 0 p 0 p 0 p +p -p 0 Ke 3 Km 3 KL decay

Cosmic veto barrel multiplicity Photons Barrel Pions data MC Barrel

DC trigger threshold calibration Control sample: • Kcrash+auto. TRG + KS p+p • 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 DC 2 thr settings (already in DB 2).

Data MC DC 2 efficiency vs data taking periods DC 2 Efficiency 2004 DC 2 efficiency scan vs threshold applied in MC DC 2 Efficiency 2005 Data period 1 DC 2 thr 0. 5 % DC 2 thr 70 75 80 85

Spares

TORTA hardware errors

Bad RF/4

Injection veto

Summary (RUN_NR 36 904, 30/05/05) N-A NOT-reco # of run (nb-1) ------------------------------------------------NO phystrig info 102 4416 14750 194 Torta-bad OR (t 0 -bad>0. 1%) 101 17270 2193 121 …+ (t 0 -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