LAr news ( LAr week 7-11/05/2007, BNL) В середине марта был залит End-Cap A и начато охлаждение End-Cap-а С (сейчас t=130 K). EMEC A: HV problems 16 sectors + 4 spares (?) in bldg. 180 nominal voltage ) 27 sectors + 4 spares in cold -> after shorts burning Crates A02, A03 A01-06, A09 – last week with refitted LV power supply (LVPS) все LVPS для ECA – конец мая Доступ ECA – с середины мая до начала июня, потом начало июля ECC – конец июля Шумы, зависящие от времени, в т.ч. коррелированные -> Tile LVPS ? Триггер для космики: 4 boards Tile + 4 boards LAr since May 8 -> 12 Tile slices in trigger timing problems HEC A: HV и шумы ОК, но сбрасывается высокое (interlock problem) FCAL A: HV ОК, шумы в группе каналов (same pin row in last connector)

Commissioning, integration, preparation to data acquisition (including the data quality control) OTSMOU = Operation Task Share Memorandum of Understanding 556 FTE/year, Россия должна обеспечить ~ 5 % 2007: 298 человек в LAr (из них 79 студентов) -> 200 FTE потребность 79 FTE (из них 45 FTE во время набора данных = 8 месяцев/год в период ) ATHENA new release – до сих пор не выпущен ( закрывается по частям)

Release schedule 13.0.x 12.0.x to be built next week, extended validation expected. Still need to finalize sampling fraction for the new G4.8 simulation Migration of commissioning analysis to or saved nightly for simulate for reconstruction and AOD level corrections for 1mm done: fixes for pileup (mostly cavern) => finalized: = Geant built for CTB data/MC comparisons (no IDET and muon CTB in release 13) COS : For combined cosmic run in June. 13.x.0 Development release towards release 14. Robustness, more realism from commissioning Dead cells, noisy channels, HV corrections Performance optimization

Physics simulation and analysis chain Generator info (MC true) GEANT4 or ATLFAST RDO (output of digitization) 2 Mb/event simulation (1.5 experiment) ESD (event summary data) 0.5 Mb/event AOD (analysis object data) 100 kb/event ( -> 50 ?) Output of several jet algorithms (different size cones, Kt) may be stored simultaneously Object containers (muons, electrons, photons, jets, b-jets etc) Duplicates tagging and/or removal (TopView, Akira Shibata) New data samples for CSC notes available (GRID and CASTOR)

15/05/07 Tue 16:00 (CERN) PAT (=Physics Analysis Tools) phone meeting 16/05/07 Wed 14:00 (CERN) Top Working Group phone meeting (regular bi-weekly)

The top group CSC Notes TopGroupNoteT1Leptons (Pralavorio) TopGroupNoteT2LightJets (Schwindling) TopGroupNoteT3BJetsTopGroupNoteT3BJets (Hawkings) TopGroupNoteT5TriggerTopGroupNoteT5Trigger (Wengler) TopGroupNoteT6CrossSectionTopGroupNoteT6CrossSection (Bentvelsen, Cobal) TopGroupNoteT7TopProperties (Onofre, Tokar) TopGroupNoteT8SingleTopTopGroupNoteT8SingleTop (A. Lucotte, S. Rolli) TopGroupNoteT9TopMassTopGroupNoteT9TopMass (Pallin, Etienvre) Щегельский, Федин (PNPI) – Single Top Бедняков, Храмов (Дубна) – измерение заряда, tt-bar-резонансы Костюхин (INFN) – измерение массы MPI (Munich) – tt-bar semileptonic decays, jets energy scale calibration

LHC schedule (L.Evans & Dec 2006 Council): last magnet installed March 07 machine closed August GeV (lum~10 29 :10 30, 75 ns between bunch crossings) November 07 7 TeV August 08 Calorimeters (plan of 20 February): end of access to ECA - end of June, Barrel A – 15 July, Barrel C and ECC – 15 August Problems: calorimeters - LV power supplies (BNL and CERN, modified version should be supplied starting from April) Inner detector - SCT and TRT - heaters problem, Pixels on retard LHC - failure of support structure of final focus inner triplet superconductive quadrupoles (1 of 28, all assembled by FNAL) during pressure test 27 March