I have run the gain monitor on a sampling of runs between 9858 and
13221. It seems that these two TOFs have gains that are at least
comparable with adjacent TOFs. Therefore, if RT2 looks broken, this may
only be apparent as it does not affect the gain. Now of course this may
have happened very recently so I will verify that I am looking at the most
recent runs (if anyone is taking cosmics data please let me know) BTW you
can see that there appears to be a problem with LT11 but this may be due
to the fitting routine. This possibility can be seen by looking at the
attached ADC spectra for left TOP. Keep in mind that the plot of ADC mean
vs RUN is done by fitting the first (non-anomalous) ADC peak in 50k
events while the spectra displays the fit for all runs combined. This
works nicely if the gains have not drifted but requires investigation
otherwise. So this is probably not really a TOF problem but a diagnostics
problem. I will be working on it.
Pete
----------------------------------------------
Pete Karpius
Graduate Research Assistant
Nuclear Physics Group
University of New Hampshire
phone: (603)978-6152
FAX: (603)862-2998
email: karpiusp@einstein.unh.edu
http://pubpages.unh.edu/~pkarpius/homepage.htm
----------------------------------------------
This archive was generated by hypermail 2.1.2 : Mon Feb 24 2014 - 14:07:32 EST