1. Arnd Meyer (RWTH Aachen) July 18, 2003Page 1 Data Taking July 11 – 18 Store # BeginLumDuration 2774Thu 15:373.3E3121.3 hrs 2780Fri 20:403.6E3120.0 hrsTRF4 trip 2783Sun 3:373.1E3118.7 hrsRF loss (all p) 2786Mon 3:522.9E3118.5 hrsRF loss (all p) 2792Wed 17:222.9E31 1.2 hrsQuench (E2) 2795Thu 8:592.2E31 8.1 hrsPowerglitch 2800Fri 11:412.9E31ongoing 79 store hours (Fri-Fri 0:00) Peak luminosity still well below early May stores – but last (AEM) week was 3 rd best in Tevatron history Need ~6.2pb -1 /week until shutdown for “base goal” (6.5pb -1 last week)

2. Arnd Meyer (RWTH Aachen) July 18, 2003Page 2 Data Taking July 11 – 18 Day∫L dt (del)∫L dt (rec)Efficiency Fri 1104nb -1 971nb -1 87.9% Sat 1066nb -1 914nb -1 85.7% Sun 1292nb -1 1112nb -1 86.0% Mon 956nb -1 840nb -1 87.8% Wed 111nb -1 100nb -1 90.3% Thu 481nb -1 422nb -1 87.6% This week5010nb -1 4359nb -1 87.0% Last week4346nb -1 3724nb -1 85.7% Best week9786nb -1 8604nb -1 87.9% Consistent data taking efficiency, but only one day above 90%

3. Arnd Meyer (RWTH Aachen) July 18, 2003Page 3 Integrated Luminosity 234 174 If lab reaches the baseline goal, we could surpass 200pb -1 (need ~5pb -1 /week)

4. Arnd Meyer (RWTH Aachen) July 18, 2003Page 4 Major Downtimes July 11-17 ● CAL: 2.4 hrs ≃ 140 BLS power supply trips Fri-Mon ● SMT: 0.9 hrs About 20 min at beginning of store on Sunday: large number of occupancy alarms confuses shift crew. Happened on several recent stores – likely caused by higher trigger rates with v12 ( more events read out during out-of-store physics run) 23 min Thursday, trip + HDI disabled ● L3: 0.7 hrs Two incidents (Sat/Sun) of L3 nodes (52, 73) dropping out of the run. Required calling expert (incomplete documentation?). Improved l3supervisor. ● L1MUO: 0.5 hrs – hardware failure requiring access ● CFT: 0.2 hrs – crate 0x51 ● Muon, CTT,...: nothing above ≃ 8min

5. Arnd Meyer (RWTH Aachen) July 18, 2003Page 5 Events ● BLS power supply trips ● Two fairly long controlled accesses on Tuesday CAL, L1 Muo high priority Muons, CFT/CTT, FPD used the opportunity ● New trigger list 12.20 online since run 178992 Thursday morning Reduced some M&P rates, decoupled some L1/L2 bits, modified b tool Most prescale sets are in reasonable shape. L3 rates still high. ● Shifter tutorial: there will be a “high level trigger jamboree” on Aug 4 L2 tutorial L3DAQ tutorial 3 talks by the trigger meisters

6. Arnd Meyer (RWTH Aachen) July 18, 2003Page 6 Run II Bests New: Best runs (luminosity) Best days (efficiency) Run II Operations page and “Run II Stores & Runs” has also been reorganized

7. Arnd Meyer (RWTH Aachen) July 18, 2003Page 7 Agenda Russ MechanicalNirmalyaCAL Arnd Data TakingAl ItoCentral Muon Jeff/Rob L1 MuonDmitriForward Muon Bob K. L1 CALMike S.FPD Reinhard L2Gordon/DougL3 Fred/Drew/Abid CFT+PSMichiel/Joe S.GM Stefan/Brigitte L1 CTTGeoff/FritzControls Breese/Michael SMTStuOnline Brendan/Michael Lumi