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  • Absolute energy calibration...
    Bian, Jianming

    Journal of physics. Conference series, 04/2011, Volume: 293, Issue: 1
    Journal Article

    We introduce the absolute energy calibration of the electromagnetic calorimeter at BESIII. The precision after calibration is about 0.5% and the resolution difference between data and the simulation is about 5%. We also present a method to veto beam-gas background using the timing information of the EMC, which is crucial for physics analyses involving low energy photons at BESIII.