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User name Mack
Log entry time 15:33:09 on August 12, 2003
Entry number 66077
This entry is a followup to: 66008
keyword=organized run list from last nite's luminosity scan on Carbon
The purpose of our 3rd and final luminosity scan on Carbon was to
significantly improve the statistics for an HMS tracking-based analysis,
acquire for the
first time in FpiII enough SOS electron data to permit an SOS
tracking-based
analysis, and check yield versus computer deadtime in a controlled
manner.
All runs have 1 million events, consisting roughly of 1/3 million HMS e-,
1/3 million SOS e', and 1/3 million SOS pi-. (Each corresponds to about
0.18% statistics before track-finding and cuts.) Beam stability was
excellent.
I. LUMI-WISE LIST OF USEFUL RUNS
(taken at roughly constant computer deadtime):
Run beamCurr PS1 PS2 comments
(microA)
----------------------------------------------
47760 27 250 1 ~27% DT
47761 53 500 2 ~28% DT
47763 80 750 3 ~28% DT
II. COMPUTER DEADTIME-WISE LIST OF USEFUL RUNS
(ie, electronic and computer deadtime are controlled variables):
47759 80 2000 8 ~11% DT
47758 80 1000 4 ~22% DT
47763 80 750 3 ~28% DT
47757 80 500 2 ~44% DT
47764 80 250 1 ~55% DT
III. LIST OF ALL RUNS IN THIS SERIES:
Run beamCurr PS1 PS2 comments
(microA)
------------------------------------------
47755-6 junk
47757 80 500 2 ~44% DT
47758 80 1000 4 ~22% DT
47759 80 2000 8 ~11% DT
47760 27 250 1 ~27% DT
47761 53 500 2 ~28% DT
47762 junk
47763 80 750 3 ~28% DT
47764 80 250 1 ~55% DT
A copy of this log entry has been emailed to: hornt@jlab.org,blok@jlab.org,huberg@jlab.org