User name Ulmer
Log entry time 14:54:44 on June23,2002
Entry number 86688
This entry is a followup to: 86686
keyword=Left VDC tracking efficiency
Run 1748 (Kin Q2D_j30) was subjected to the same analysis. The top-left panel of the figure shows the tracking efficiency of the Left VDC with only a Cherenkov cut. The top-right shows the efficiency when the tc_cor cut is added (204-214) and the bottom-left shows the efficiency when the tc cut is used instead (220-240). All spectra have the Cherenkov cut. Here, it appears the statistics are good enough to prove that the coincidence time cuts result in a reasonably flat efficiency. I'm happy now and will stop adding Halog entries on this issue.