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Trigger simulation for 2004-2005

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:

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Trigger simulation for 2004-2005

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  1. 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

  2. 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

  3. Summary: All runs 2004 2005 N-A NOT-reco reco (nb-1) (nb-1) (nb-1) ------------------------------------------------------------------------------------------------- Torta-bad OR (t0-bad>0.01%) 101 182509157 NO-inj-veto 0 75511980 NO physmon info 48 3024 12580 Rejected DB2 flag (No-INJ) • Updated run list ready

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

  5. Calorimeter trigger threshold calibration • Control samples: • Kcrash+autoTRG • + KS p0p0 (“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 DB2).

  6. Photons on the barrel (before calibration) Th(MeV)  5% data MC data/MC Z(cm) Th(MeV)  5% Z(cm)

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

  8. Photons on the EndCaps (after calibration) data MC data/MC Th(MeV) Th(MeV) Y(cm) Y(cm) Th(MeV) Th(MeV) Y(cm) Y(cm)

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

  10. Pion trigger sector multiplicity East data Barrel MC d  2-3% West

  11. MC efficiency spread for a +/- 5% overall threshold drift p0p0p0 KSp0p0 p+p-p0 d 0.5% Ke3 Km3 KL decay

  12. MC efficiency spread for a +/- 5% overall threshold drift KSp+p- p0p0p0 p+p-p0 d 1% Ke3 Km3 KL decay

  13. Cosmic veto barrel multiplicity Photons Pions Barrel data Barrel MC

  14. DC trigger threshold calibration • Control sample: • Kcrash+autoTRG + 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 DC2 thr settings (already in DB2).

  15. Data DC2 efficiency vs data taking periods MC DC2 efficiency scan vs threshold applied in MC DC2 Efficiency DC2 Efficiency 1 DC2thr  0.5 % 2004 2005 DC2thr Data period 70 75 80 85

  16. Spares

  17. TORTA hardware errors

  18. Bad RF/4

  19. Injection veto

  20. 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 172702193 121 …+ (t0-bad>0.01%) 0. 843 6308 36 … + NO-inj-veto 0. 63311050 83 • Run list ready

  21. Data quality vs run number Bad trigger conditions No PHYSMON info

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