- Xilin: diffractive EM jet simulation update
  - Xiaoxuan: calibration update
  - Minghui: calibration update.
                   For more details, I attach mass_conv_iter21.pdf and mass_conv_iter21.pdf.
                        1. File mass_conv_iter14.pdf showing all the "converged" channels at iteration 14 (once a channel is converged, fix gainCorr and status from begining). Check some channels converged at an earlier iteration, but look bad now.
                        2. File mass_conv_iter21.pdf showing all the "converged" channels at iteration 21 (first 14 iterations as before, but update gainCorr from iteration 15 while still fix "converged" status). Check some channels converged at an earlier iteration, but look bad now.
                        3. some example channels (once converged, later become bad)