Subject: Shift summary day 11 Jan. 19100
From: Vivian O'Dell (firstname.lastname@example.org)
Date: Fri Feb 04 2000 - 15:19:33 CST
Shift summary day 11 Jan. 19100
(my computer back in chicago has a strange y2k bug so I
though I would repeat its form in the date for you here)
On Shift: RW, NS
Hours of beam available at all intensities: 4.0
Hours of beam available at nominal intensity: 3.5
Hours of E799 data (special runs not included): 0
Hours of special runs (laser scans, muon runs...): 3.0
Accounting of lost time:
o Tevatron quench
o Klystron problems, took advantage to chang over to short regenertor
Tapes brought to FCC this shift: none
Accesses during shift: Leo and Sasha to fix stream 5 hangup problem.
Nick, Leo, Ed, Valerie and Rick K. to change
over to short regnertor run.
Runs ended this shift:
15478--special run for BA calibration with electrons.
15479--special run for BA calibration with electrons.
Overview of shift:
Run Spill Time Comment
15478 34 07:00 New shift crew arrives, special run with TRD
offset and one hole pluged to be used for
electron identification by BA.
07:07 TeV quench, no beam, estimate 1 hour.
08:20 Sasha and Leo make access to fix stream 5.
08:24 Repair man came to fix heater in gas shed.
08:31 MCR message they are turning on TeV expect
beam in 30 min.
08:50 Access done.
09:05 MCR message says "trouble with tev high
order power supply", someone explain this
to me when and if you figure out what they
mean by "high order"
164 09:54 Low intensity beam returns. DA still having
184 10:20 Ending run to do a restart on DA to see if
that solves our problems.
15479 10:28 Run started, and no ktev ana erros for 2
10:30 The maintance crew working on gas shead
heater comes in and says that he cannot fix
the heater until he shuts all the gas flow
in the building off and shut the electricity
to that room. We should call him when there is
a day or after the run is over. Lets hope the
weather does not freeze.
10:35 Acceletor delivering nominal intensity.
9 10:38 Beam gone.
12 Beam back.
20 beam gone
23 beam back
34 11:15 Beam gone, beam quench at D4, estimate 1
11:20 Sasha put crates 16 and 17 (regenertor craates)
back into readout and DA still seams to work.
11:45 Gas checklist done.
82 12:15 Beam at low intensity returns.
95-99 DA problems, Leo took crate 16 and 17 out of
readout and DA functions.
12:45 Beam very intermitant since return, plus also
we took down the christmas tree lights..
114 13:00 A spill at 9e12, requested intensity!!
Audio error stating L3 accept fraction error.
129 Beam gone.
131 Beam back.
13:31 Leo called MCR and complained that the
beam spill structure was horrible and they
will look into it and see if the QXR needs
13:50 Beam gone, many problems frig, linac and klystron.
176 14:22 Run ended, MCR called to change over to
14:45 Access by Ed, Valerie, Nick, Rick K, and Leo:
to removed TRD from beam, ET delay cable and HA
14:50 Bob T. and Rick C. make access to NM2 target hall
to remove shadow absorber, beam plug and reconnect
15:05 Regenerator moving started.
15:15 NM2 out of access, returning keys to
MCR and should be ready to start run soon.
15:30 End of shift, work to get short regenertor run
still in progress, need a muon run first then
move to the short regenerator run configuration.
Dr. Nickolas Solomey, Research Scientist, Enrico Fermi Institute
The University of Chicago, 5640 S. Ellis Ave, Chicago, Ill. 60637 USA
Phone: (773) 702-3278, fax: x-6317, http://hep.uchicago.edu/~solomey
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