Frank L. H. Wolfs
Department of
Physics and Astronomy, University of Rochester
Time-delay Matching
¥In order to improve the quality of the time-delay
matching, we need to use a calibration signal that monitors the cable delay
continiously (e.g. use the time calibrator signals with a rate of 1 Hz and with
period = range).
¥We make the assumption here that the delay variations
are due to changes in the delay of the delay cable. There is no reason to believe that the variations are due to
the PMTs and in fact this can be demonstrated by comparing the timing of the
ORs (which do not show the drastic variations, and travel over BNC cables to
the CH) with the time of the individual detector signal which travel of ribbon
cables.
¥We need to develop the tools to use these time signals
to monitor the time delay.