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Date: Wed Jan 2 00:03:27 2002, Shift: 16:00-24:00
Supervisor: fv, with: (sjs,hiro) parttime
Log book#11 pages 130 - 134
Shift Summary:
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Much time spend on machine injection.
store one 17:30 - 19 inel rate ~7K
and ongoing started 22:35 inel rate 3.5K.
Runs FS 12 deg 1/8A 6234, 6235, 6236(in progress)
45K trigger 6
MRS 90 deg 2A ~40K trigger 3.
Checked timing for inel counters. Made small adjustments for
R1,L1. They are now in trigger (For runs 6227-6233) the selection of trigger counters was L2-4 and R1-3 (not R2-4).
details:
16:30 One unsuccesfull ramp with too little yellow beam to keep.
17:30 Succesfull ramp.
17:35 Start run 6234
FS 1/8A
MRS 90 deg 2A
At 18:05 some machine activity caused the background rates
to change considerably (*2 in H1,H2)
See attached pict in logbook page 131.
18:30 Stop run 6234.
18:30-19:30 Look and investigate inel trigger,
checking delays settings, and changing OR to R1-R4 and
L1-L4. Rtaes only went up ~ 5500-> 6500
19:35 Run 6235 started.
19:45 paused run 6235 for pol measurements.
19:50 RHIC quench link interlock
22:25 By reading the RHIC e-log saw the plot + comment that the
quenchlink relates to the Phobos magnet. The other interesting
BAD item is that the increase noticed in background rates at 8:05-815
correlates with a first turn on of the Phobos magnet!!
22:30 The next fill done. Looks promising, but not very high.
~3.8 K (with R1-4 AND L1-4 in inel trigger)
22:35 Start run 6236
Actual polarization measurement did not take place
until 23:03-23:05 (This may have been phobos magnet again)
23:25 It is still called machine setup - presumably MCR is
doing pol
Beam so far
17:30-19:45 == 2h 15 min
22:30- 1H 30 min (3:45)
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