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Comparison of conversion rates in MC to data, take 1

Abstract: We compare the conversion rate for simulated π0 events in the 1st radiator of the endcap to data.  We find a conversion rate of 90% +/- 2% for the simulation, compared with 91.5% +/- 0.3% for the data, where we count any signal w/in R<0.3 of the pion candidate as a conversion.
 
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2009 BSMD Status for 500 GeV Run

The BSMD status analysis for the 500 GeV data proceeds in two steps.  First, each strip is assigned a status for the whole run from an analysis of fills 10399, 10402, 10403, 10404, 10407, 1041

ZDC simulation with enhanced resoluton

I changed the simulation to be able to read out each SMD strip individually so there are 21 by 32 bins instead of 7 by 8.  This required a new binning configuration so I created two; one

ZDC Simulation files and documentation

The simulations consists of three files:
phiAsymmetry_Sim*.C   generates the simulated coincidence histograms.

BSMD energy scale uncertainty

1. Dataset

  • 2005 p+p HighTower-1 data
  • Single-particle Monte Carlo simulation
  • Default cluster finder

Bsmd Status Presentation for EMC Meeting

Remarks on the EEMC calibration in 2006

 
Abstract: We examine pi0 invariant mass spectra from the 2006 run, using isolated pions with no energy deposited in the 1st preshower layer w/in a radius of 0.3.   An invariant mass of 139.0 +/- 0.3 MeV is reconstruced, with no observed dependence on pseudorapidity.  Conversion rates observed by the preshower layers for identified pi0 decays, indicate that, on average, there are three photons w/in the cluster used to measure the energy of the pion.
 
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QM09 Proceedings

QM09 Proceedings - Chris Perkins

dAu east-west DCA asymmetry

Looking at the signed DCA of tracks on the east half of the TPC minus the west half of the TPC for Run 8 dAu data gives the following results using the calibrations for SpaceCharge and GridLeak ins

QA for 05/12/09 - 05/18/2009