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Transition from global_CMT-11.03 to global_CMT-12.10

Kyle Stevenson Elizabeth Gallas Terry Toole Trigger Board Meeting July 8, 2003. Transition from global_CMT-11.03 to global_CMT-12.10. global_CMT over last week. 11.04 – online 10-May to July 2, one Run July 7 July 1,2 (Initial Luminosity about 20E30) 5 days with accelerator problems …

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Transition from global_CMT-11.03 to global_CMT-12.10

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  1. Kyle Stevenson Elizabeth Gallas Terry Toole Trigger Board Meeting July 8, 2003 Transition from global_CMT-11.03to global_CMT-12.10

  2. global_CMT over last week • 11.04 – online 10-May to July 2, one Run July 7 • July 1,2 (Initial Luminosity about 20E30) • 5 days with accelerator problems … • July 7 (Trigger verification run after many changes, access) • 12.10 online July 7,8 (2 Stores including current) • Smooth running with strong evidence of trigger problems effecting the trigger rates • L1 Cal (hot towers) • L3 cal: spikes, jumps, rises in L3 accept rate of JET triggers

  3. global_CMT-12.10 – Runs/Rates • 12.10 online July 7 and July 8 • 2 Stores incl. current store, Initial Luminosity ~30E30 Store Run LumI / PSFile PeakRates ( 1400 / 800 / 50 Hz) 2768 178721 30 / 30 700 / 460 / 45 (last run of 11.04) 178722 24 / 25 1700*/ 600 / 55* 178723 20 / 20 1400 / 550 / 60* 178724 17 / 17 1120 / 450 / 55* 2770 178733 31 / 30 1250 / 740 / 65* 178734 24 / 30 900 / 550 / 50 (L3 MET problem) 178735 22 / 20 1550 / 600 / 70* Summary: 12.10 current rates to tape are too high, require immediate prescale adjustments !!!

  4. Global_CMT-12.10 - problems • Run 178722 • L1 and L3 spike in all high ET Jet, MHT but not MET or EM ? • Spike in L1 magnified in L3 ??? • Lifetime just one or a few luminosity blocks • Weird correlated increase in feb with increase in rate • Suspect ? Increase occupancy in tracking increases candidates • Run 178733 • L1 hot tower addressed by Dan • Run 178734 • Jump and/or steady rise of high Et Jet, EM, MET, MHT L3 rates • See E1_SHT20, JT_95TT, MET and MJT triggers (but not lowest ET jets) • Continues over many luminosity blocks

  5. Global_CMT-12.– future • Dmitri/Arnd: Rate caps for version 12 • L1 / L2 / L3 Accept = 1400 / 800 / 50 Hz • L3 Calorimeter problems observed for JET triggers • May be other problems, these have cause most blatant rate problems • Rates are too high • Prescale changes based on data collected are being applied at L1 to control rate to tape • TM so far have changed only the 25E30.prescales • See the change.log for exact changes • This was because we expected it to be used in next store (this morning) • 25E30 file was skipped during store today (due shifter error) • Accepting input • Future: • No trigger change requests have been received from TB • %_IP Triggers (now disabled if not sharing a prescale) • xml change required – TMs are awaiting specifications • No triggers will change

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