User name xfzhu
Log entry time 21:12:59 on July 8,2001
Entry number 65687
keyword=Scaler event analysisWith Bob' Scaler Class Package ( http://hallaweb.jlab.org/equipment/daq/THaScaler.html), scaler variables were extracted from the coda file, and filled into a ntuple file.
However, there is a typo in program: tscalntup_main.C. as shown below:
// 26 27 28 29 30 31 32 33 34 35 36 37 38
char asymmetries[]="au1:au3:au10:ad1:ad3:ad10:at1:at2:at3:at4:at5:aclk";
The last varible show be number 37, instead of 38, and it is due to the misalignment of the variable with array index from 27 to 30. Please also change the relative code in the end : farray_ntup[38] = asy; --> farray_ntup[37] = asy;
Run 1754 ( left arm data ), is analyzed with the modified code,
Fig 1 . is plotted with time as X axis, from the begin to the end of the run:
Topleft: the rate of BCM u3 (The oscilation of beam current is shown)
topmiddle: the accumulated charge by BCM u3 gated by helecity +1
topright: the accumulated charge by BCM u3 gated by helecity -1
bottom : the same plot with BCM d3
Fig2 is also plotted with time as x axis
Top shows the aymmetry rates from BCM u1,u3,and u10
Bottom shows the aymmetry rates from BCM d1,d3,and d10.
FIGURE 1
FIGURE 2
