16:30---Start new Compton run 16894.
16:36---Continue production running.
2188 21088
16:40---Stop the runs to make a change in the scalers. Continue production running.
2189 21089
16:52---Doug & Brad are changing the BCM coefficents. Stopped the runs (2189, 21089). Eventually we realize that there is about 1.5 uA of witness beam going to the BSY dump. So 0L02 shows about 1.5 uA higher than Hall A BCM.
16:55---Continue production running.
2190 21090 2191 21091 2192 21092
18:05---R-HRS Q1 ramped down. Stopped runs (2192, 21092).
Tried to ramp it up, it came up a little ways and then ramped back down. Called RC; pushed the green button for local reset. Tried to ramp up; it got up to about 500 A, then ramped down.
RC says run on the left, and he'll call around to see what to do.
18:18---Start runs (2193, 21093). R-HRS Q1 is at zero amps.
R-HRS Q1 is being ramped up by someone remotely.
18:41---R-HRS is up and seems to be regulating.
Stop runs (2193, 21093). Resume production running:
2194 21094
19:12---Started new HAPPEX (31367) and Compton (16895) runs. Continuing production running.
2195 21095 2196 21096 2197 21097
20:16---We notice the Compton machine is frozen. The last update of the clock was at 19:30 or so. RC called about it just as we noticed the problem. The Compton expert is being notified (by email).
RC says leave it alone until morning, if Compton expert doesn't respond to email this evening.
20:39---TO does an NMR sweep after runs (2197, 21097). Polarization is 61.6%.
Continuing production running.
2198 21098 2199 21099 2200 21100 2201 21101 2202 21102 2203 21103
23:28---New HAPPEX run: 31368.
23:46---Continuing production running.
2204 21104
Shift ends with runs (2204, 21104) in progress.
Compton DAQ is still frozen; will be attended to in the morning.