Log entry time 08:05:24 on October 14, 2010

Entry number 334804

This entry is a followup to: 334594

After yesterday work on the retiming ( here), the tdc data of the scintillators look like what we want.

This night, I took two runs with S2 as a trigger (7324 and 7325). Again I looked at the tdc distributions for events hitting only one s2 scintillator at a time and then looked at how these distributions were modified when I required also one (and only one) hit in a S1 scintillator. Thanks for Charles and Bob's work form yesterday, the distribution now do not change and it looks like indeed S2L are the scintillator defining the timing.

NB: the plot below are for the LHRS on positive polarity.

Figure 1: S2 L for run 7324

Figure 2: S2R for run 7324