Summary

• PHENIX successfully completed first physics run from June to early-September in 2000.

• PHENIX EM calorimeter works and has measured signals.

• EM calorimeter calibration

  • Energy, TOF are calibrated by laser, MIP peak of cosmic ?/charged hadron, an ?0 mass

• Physics analysis is in progress.

  • EM shower energy distribution with different total energy.
    • No Efficiency correction
      • TOF efficiency , background contamination are not corrected.
      • Shower overlapping effect is not corrected
    • Slopes seem to be similar
    • We still working on TOF efficiency/background contamination and overlapping effects.

• We will investigate centrality dependence

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