run coordinator’s report 13-20 march 2006
DESCRIPTION
RUN COORDINATOR’S REPORT 13-20 March 2006. Thomas Sch örner-Sadenius Universit ä t Hamburg ZEUS Monday Meeting DESY, 20. M ärz 2006. SUMMARY. ¶ Probably my first run coordinator week without major (or only minor) desasters. – access, cooling, evacuation, fire … - PowerPoint PPT PresentationTRANSCRIPT
RUN COORDINATOR’SREPORT 13-20 March 2006
Thomas Schörner-SadeniusUniversität Hamburg
ZEUS Monday MeetingDESY, 20. März 2006
DESY, 20.3.2006 TSS: Run Coordinator Report 2
SUMMARY
¶ Probably my first run coordinator week without major (or only minor) desasters. – access, cooling, evacuation, fire …
¶ Lumi this week: – HERA delivered: 4.88 pb-1 – ZEUS gated: 3.26 pb-1 – Largest fill: 1.02 pb-1 delivered – best fill: 91% efficiency
¶ Two very nice fills, else suffering from backgrounds or ZEUS problems; – sometimes efficiency below 50% – average efficiency 66%
DESY, 20.3.2006 TSS: Run Coordinator Report 3
HERA PERFORMANCE
¶ Instantaneous (specific) lumi up to 4*1031 (2*1030)
¶ Currents up to 87 and 37 mA, respectively.
¶ Polarization going up to almost 40%.
DESY, 20.3.2006 TSS: Run Coordinator Report 4
HERA PROBLEMS
Tuesday:- proton injection problems- e- transmitter problems- Temperature alarms north- bad e- injection efficiency- feedback system …- rather bad backgrounds
Wednesday:- proton magnet PS+cooling 2 short breaks- then p lost during ramping.- H1 e- dump
thursday:- bad backgrounds- “conflict” between H1 VFPS and ZEUS conditions (orbit).
saturday:- temperature alarm WR e- dump after lumi declaration- lifetime problems.
sunday:- computer problems no electrons.
today:- beam loss because of sender east-right.
DESY, 20.3.2006 TSS: Run Coordinator Report 5
ZEUS PROBLEMS¶ VETO wall excluded because of problem with GSLT interface card.
¶ FMUON: – some readout problems excluded for large parts. – water leak on Sunday excluded.
¶ FTD/STT: few times in error after activate, stuck in trans
¶ CAL: – stuck in trans, a few times “no busy response from CAL” – once RCAL transputer not reachable, BCAL digital crate off.
¶ HES: hc3 PS trip module R17 silent needs access.
¶ CDAQ: two times Ulf had to restart processes (FLINK, run number server)
¶ MVD: “SC_ALIGN_INSERT” process needed to be restarted.
¶ CTD HV program crashes (2)
¶ one noisy CFLT channel causing slightly high deadtime.
¶ BAC causing high deadtime new calibration needed.
DESY, 20.3.2006 TSS: Run Coordinator Report 6
ZEUS PERFORMANCE
¶ … and on top of that bad backgrounds from time to time … – proton-induced – synchroton radiation
DESY, 20.3.2006 TSS: Run Coordinator Report 7
ZEUS PERFORMANCEMonday, tuesday
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ZEUS PERFORMANCEWednesday, thursday
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ZEUS PERFORMANCEThursday, friday
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ZEUS PERFORMANCESaturday, Sunday …
DESY, 20.3.2006 TSS: Run Coordinator Report 11
ZEUS LUMINOSITY
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LUMI/EFFICIENCY PER DAY
DESY, 20.3.2006 TSS: Run Coordinator Report 13
LUMI/EFFICIENCY PER FILL
DESY, 20.3.2006 TSS: Run Coordinator Report 14
LUMI LOST BECAUSE …
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EVENTS OF THE WEEKNC at Q2 = 6704 GeV2
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EVENTS OF THE WEEKCC at Q2 = 17000 GeV2
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EVENTS OF THE WEEKCC at Q2 = 5235 GeV2
DESY, 20.3.2006 TSS: Run Coordinator Report 18
EVENTS OF THE WEEKNC at Q2 = 13140 GeV2
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NEXT WEEK …… your friendly run coordinator on duty is …
Me again …