People on shift include Jon Streets, Ken Delsignore and Cyrus Taylor;
Dick did a final check of timings just before seps went off.
Note that the store was 5x5, with missing bunches a6, p6 colliding
at C0. The Main Ring was on for the entire store.
The first several hours of the store are used to map out a delay
curve: 50 K events Pb in/out at delays of 2,4,10,12 ns and 6ns Pb out.
NHITS appears to increase as the delay shortens.
1:09 PM Seps Off
Begin run 1128 to disk
BD pbar or delay=6 ns
Pb out
Initial D0 luminsity .64e30
1:24 PM Double pulsing observed in Beamtrid/BDPbaror rate...
this is no doubt due to an unterminated cable someone used in the
past twenty four hours to check timing, and indeed I found more
than one such cable, but...no fix. This is an intermitent problem
through the run
1:48 PM MCR calls--a little more scraping (event #55781)
1:58 PM end Run 1128 50743 triggers to disk
ship to fnalu and check efficiencies...seem nominal
2:07 PM start run 1129 to tape MIN217
BD pbar-or delay=10ns Pb out
2:08 PM scraping ends
2:59 PM end run 1129, 53803 triggers to tape
3:04 PM Begin Run 1130 to tape MIN218
BD pbar or 10ns Pb in
at ~event #83999:
Observe a spike in Kicker 1,2 TDC's: very sharp somewhat before
the pbar signal. Can't decipher it. Briefly pull the pbar-or input
to that TDC module without terminating it--causes a second peak
in trig time plot to appear without ending the anomalous kicker spike.
Replace the pbar-or tdc input, trigger time again sharp.
3:51 PM end run 1130, 50448 triggers to tape
3:54 pm Begin run 1131 to tape MIN219
BDPbar-or 4 ns Pb in
4:39 PM end run 1131 51257 triggers to tape
4:43 pm begin run 1132 to tape MIN220
BDPbarOr 4 ns Pb out
5:31 pm end run 1132 with 52422 triggers to tape
5:35 begin run 1133 to tape MIN221
BDPbarOr 12 ns Pb out
6:26 pm end run 1133 with 50686 triggers to tape
6:30 pm begin run 1134 to tape MIN222
BDPbarOr 12 ns Pb in
7:20 pm end run 1134 with 50022 triggers to tape
7:21 pm begin run 1135 to tape MIN 223
BDPbarOr 2 ns Pb in
8:11 pm end run 1135, 50026 triggers to tape
8:15 pm begin run 1136 totape MIN224
BDPbarOr 2 ns Pb out
9:04 end run 1136, 50037 triggers to tape
9:08 pm start run 1137 to MIN225
BDPbarOr 8ns Pb in
0:50 AM 23 January 1996 end run 1137, 250011 triggers to tape
0:50 AM start run 1138 to MIN226
BDPbarOr 8 ns Pb out
4:43 AM end run 1138, 260572 triggers to tape
unfortunately, ct hits 'I' in global menu rather than run control; tape comes out of
drive, but I decide it is the better part of valor to reboot.
While this is going on, I run delay curves with various triggers.
This is complicated because the length of the MR cycle
changes during this period... in the end I decide:
5:40 AM begin run 1139 to tape MIN227
BDPbarOr delay=8ns Pb in
8:03 AM end of store end of run 1139 153037 triggers to disk