Log entry time 09:54:58 on May 09, 2011

Entry number 358705

This entry is a followup to: 358667

Followups:

• 358709 05/09/11 10:24 yez L1A delays of both two HRSs have not been change since Mar4.
• 358720 05/09/11 15:37 V. Sulkosky 60 ns Timing Shift for R-HRS Seen in VDC

I looked closer at the timing on the right HRS from the data taken last 
night.  Figure 1 shows a TDC from the right S2m detector bar 9 on the 
left side.  There is a clear ~ 60 ns timing shift.  I think this is due to
a timing change on the right HRS in regards to the L1A going into the
retiming circuit.  In reality, this can be removed in the timing 
calibration for the right HRS, and is not a significant problem.

I have talked with Zhihong and he is going to refer to his notes so we
can revert to the L1A delay used in the previous running.

April vs. May Running