------------------------------------------------------------ Date: Tue Jul 4 16:05:56 2000, Shift: 08:00-16:00 Supervisor: RD, with: PC and many others Log book#2 pages 129 - 133 Shift Summary: ------------------------------------------------------------ When I arrived the previous shift was taking data in run 1608 We turned on D1 and D2 at 1/6 of max field and started to take data in run 1609. The beam died because a "Vacuum interlock" at 9:24 I had a short access as soon as RHIC went into crontolled access: My first task was to inspect the HV cabling of T2; I found all cables connected correctly. The second thing I did was to equalize the flow in MTPC1 and 2 and when I left the IR I restored the flow to 22 cc/min in both TPCs No more beam for the rest of the shift. The operators have been trying to inject beam into RHIC but the machine refuses to keep it. Bjorn pasted some plots on the log book. They show band structures in the BB ZDC time correllation. These bands seem to appear after run 1596. D5 is on at running at 600 A (~1/4 of max field). During shift check the fan on rack 2 NIM bin 3 was found unplugged. Now it blows happily. When looking at pedestals Peter found that the MultSi plot is identical to the one filled with data. The other plots for Si look OK. C1 is now running with un updated file that has channel 4 at -1400 volts. ------------------------------------------------------------
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