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- top: electron efficiency and pion rejection factor, vs. cut in spec_r.gas.adc_sum_t, for long gas cherenkov dectector, note that the scale for electron and pion efficiencies are different;
- bottom:electron efficiency and pion rejection factor, vs. 2D cut in showerE and preshowerE, for total shower detector, horizontal axis is in arbitrary unit.
Right arm detector efficiency for a high pion run
The arbitrary unit used for defining 2D cuts in preshowerE and showerE can be understood by figure
2D cuts in preshowerE and showerE for PID analysis