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

Entry number 365485

This entry is a followup to: 363840

#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.

Figure 1

Figure 2

Figure 3