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User name dhamilton
Log entry time 16:03:09 on November16,2008
Entry number 249235
keyword=Day Shift Summary
Day Shift Summary
David Hamilton (SL)
Zhihnog Ye (TO)
Franco Garibaldi (3rd)
08:00 - Shift starts with MCC struggling to get a stable 8 microamp beam on target during a RICH pedestal run.
09:05 - Stop run 3555 to change BB HV and prescales for stable 8 microamp running. Started run 3556.
10:05 - MCC called to inform us that they have a problem with a cavity and beam will be down for around 15 minutes. Data-taking has been stopped.
10:15 - Acc. problem fixed ... data taking resumed after rebooting run control due ot it freezing up.
13:10 - Problem with target GUI. Stopped data-taking for 10 minutes followed by 10 minute test run (3563).
14:10 - increased beam current to 10 and then 12 microamps, whilst watching the dark current on the BB chambers with a view to changing HV settings.
14:30 - MCC called to say they are having some problems with the RF system
15:10 - MCC want to send tuned beam - move to BeO target.
15:50 - After a while with MCC struggling to get any kind of stable beam in the hall, positions now look good on the BeO. Have requested a harp scan on 3A and 3B - both are less than 300 microns.
16:00 - New shift begins moving the 3He target into place.
3555 0.8M - unstable beam current
3557 0.2M - stopped early due to Acc. problem
3558 0.7M - stopped early to fix HRSL VDC timing
3561 0.4M - stopped early to investigate trigger timing