Hi Eugene,
between 9168 and 9202 the BAT TDC has been reinstalled. The electronics
map changed from Electronics~25.map to Electronics~026.map.
It was then noticed that the BAT TDC did not work. The replacement TDC was
installed in yet another slot, causing the change of the electronics map
to Electronics~027.map.
The flasher timing of individual TDCs may have jumped by these operation,
as the timing of the physics would do as well. That's what the flasher is
meant to be for - to monitor these jumps and to correct them on a run by
run basis.
Have you looked at TDC differences, or at offset-subtracted TDC entries?
If you only quote the position of a single flasher peak, it would not
necessarily affect the physics. From (e,e'n) analysis (Tnn) I don't see a
jump, indicating that the handling is correct.
Regards,
Michael
On Fri, 15 Oct 2004, Eugene J. Geis wrote:
> In the v3_4_1 recrunched runs, There is an electron time of flight shift from
> tdc channel 965 to 840 between runs 9168 and 9202 respectively. This would
> amount to a 120 channel shift in the benchmark or time zero. Has anyone noticed
> this or already pursued the cause?
>
>
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