If there has been a sudden time shift in coincidence with a lab power
outage, has anyone checked that the correct settings for the trigger
(delays, thresholds, etc.) are being downloaded correctly into the
the trigger?
On Sun, 7 Dec 2003, Adrian T Sindile wrote:
> Hi!
> After level 2 trigger was tried on Friday at 10 AM, Chris and Taylan
> reported they lost all left TOF TDCs...
> Next shift reported fixing the problem (i.e. getting TDCs back - see Web).
> Unfortunately, while looking at data from last 200 or so runs (starting
> right after shutdown) I saw from UNH that the timing for the left TOFs is
> still messed up.
> So starting from run 3629 - which corresponds exactly with the time Chris
> and Taylan reported the problem, the left TOF TDCs are all over the place.
>
> I am attaching two plots. In the first one you can see the timing was
> pretty stable (almost a horizontal line until run 3629).
> In the second plot I zoomed in some more, starting at run 3625 - it became
> obvious then that the problem ocurred at 3629.
>
> I left a message on Doug's phone. We probably have not lost much time
> anyway, since we had the power failure and everything - but I wanted to
> let people know that from here it looks like the left TOF TDCs are not
> stable (I am using the recently written TOF monitor and errors are
> possible, although unlikely - the right side looks just fine).
>
> Adrian
>
> -------------------------------
> Adrian Sindile
> Research Assistant
> Nuclear Physics Group
> University of New Hampshire
> phone: (603)862-1691
> FAX: (603)862-2998
> email: asindile@alberti.unh.edu
> http://einstein.unh.edu/~adrian/
>
-- John R. Calarco Dept. of Physics Univ. of New Hampshire Durham, NH 03824 phone: (603)862-2088 FAX: (603)862-2998 email: calarco@unh.edu
This archive was generated by hypermail 2.1.2 : Mon Feb 24 2014 - 14:07:30 EST