Log entry time 21:29:54 on March 17, 2011

Entry number 352360

I started to analyze the new runs that we have from He4.

I plotted the coincidence time between the HRSL and HRSR, figure attached.

In the next step I wnated to look on the TOF in bigbite with the cut on
coinc time (in addition I add cut on L.gold.dp and R.gold.dp and demand
eventype 5).
When I tried to plot BB.tp.e.tof I get a weird result. High peak. I don't
think that this peak is real, probably it's due to self timing. I see
this peak both for 1190 and F1 TDCs.
Suggestions?   (when I cut out offtime it still there, however much lower
as expected)

if I look on the Left + right TDC in BB and substruct from it the T3 time
than I can get the TOF for protons in to the BB?

the common stop for BB is retimed L1A signal, this mean that the
difference between each bar from sintilator plane witht the common stop
should give delta function.
However, common stop for the DBB.t3[0] is same as for bigbite (because it
located in ROC 10). so if we substruct these variables we get the tof for
BB, I think...

I prepared some plots:

1) Coincidence LHRS & RHRS
2) strange peak, self timing for BB?
3) Tripple coin(?) with 1190 TDCs (redone is in time and black is out of
time)
4) no signal for F1 (same plot as for 1190, black line is in time) (why?)
5 & 6 are for TOF vs Momentum in BB (based on Wire Chambers , I don't
know if T0 are calibrated)




 

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6