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    User name mhuang

    Log entry time 20:23:42 on March 10, 2012

    Entry number 365485

    This entry is a followup to: 363840

    keyword=a closer look at CH2 runs

    #2753, no target field, CH2 foil in LHe.
    Nilanga suggested me to cut on vz to separate CH2 foil, and plot dp again
    to see how C and H peaks will be enhanced.
    In Figure 1, the first pad is the dp plot of central hole, same one in
    the referred entry; the second pad is the vz distribution with cut
    dp>-0.0003 to choose the C12 peak (mystery here: this C12 peak position
    is different from the C12 target run, see in referred entry). 
    In Figure 2, they are with difference vz cuts from Figure 1. The one with
    abs(vz)<1.e-3 looks enhancing C12 peak. 
    Figure 3 shows the vz with cut dp>-0.0003, but including the entire sieve
    holes. It has several peaks, which I don't understand here.

    A copy of this log entry has been emailed to: nl8n@virginia.edu, mhuang

    Figure 1

    Figure 2

    Figure 3