------------------------------------------------------------ Date: Tue Jan 1 00:13:20 2002, Shift: 16:00-24:00 Supervisor: sjs, with: Log book#11 pages 128 - 129 Shift Summary: ------------------------------------------------------------ Beam stored and cogged since 16:50 Runs 6227 (69.7K trig 6), 6228(34K), 6229(40K) NOTE: The FS angle in DB incorrectly entered as 8 deg. since run 6220. This should be changed! The correct FS angle for run 6220 through 6229, inclusive, is 12 deg. We have accumlated a total of ~200000 trig 6 events with this FS setting (12 deg.!!). The goal is for 300000 events. At the beginning of the shift, before run 6227, the attenuation and DC offsets were adjusted for si1_1c to see if we could move the single mip peak away from the pedestal. The experiment (done with HI) indicates that it might be necessary to change some of the resistor values of the attenuator circuit to obtain the desired result of high gain and correct dc offset... HAPPY NEW YEAR!!! (It just passed midnight...) Only potentially new detector problem is that for the tofwcal hit dist (Top+bot) spectrum, slot 2 has a low number of hits compared to earlier runs. After I submit this report I plan to call it quits and inform MCR that we will be down for about 9 hours....The day shift may start a little late tomorrow... ------------------------------------------------------------
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