Make New Entry, Make Followup Entry
User name Chao
Log entry time 02:34:47 on April 1,2012
Entry number 368833
This entry is a followup to: 368824
keyword=E plane ADC plots for 3rd arm run 40604 and 40587I put the E plane ADC plots of run 40604 and run 40587 here for reference. Run 40604 is the run we took after we fixed the high rate problem on 3rd arm. This plots is same as what we saw before Moller.
The plots for 40587 shows more backgrounds.
There are already several entries talking about this issue on 3rd arm. What we did to fix it is to reduce the slow raster size to 1.8 cm and ask the MCC to change the beam position to 1H01(X=0,Y=-0.7) 1H05A(X=0.5, Y=-2.3) 1H05B(X=-1.1,Y=-4.0), at this position, the trigger rate is as what we expect and the DAQ responsed
FIGURE 1
FIGURE 2
