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1 ATLAS Readiness for Run 2 C. Gemme (INFN Genova) ATLAS Collaboration CSN1 venerdi 17 Aprile 2015 Slide 2 2 17/04/2015ATLAS Readiness for Run2 CSN1 The chance to face a new energy frontier comes once in a generation. Slide 3 3 17/04/2015ATLAS Readiness for Run2 CSN1 The chance to face a new energy frontier comes once in a generation. But we are about to do it again for the second time in six years!! ATLAS 2009 Slide 4 A unique discovery potential at 13 TeV! n 4 Hugely increased potential for discovery of heavy particles at 13 TeV! Slide 5 Run 2 Challenges Phase-0 detector upgrades! Many new CP algorithms offline and online, vast trigger menu that has never seen data. Software & computing changes! New analysis model Run 1 analysis finalisation and upgrade work. 5 17/04/2015ATLAS Readiness for Run2 CSN1 Slide 6 Milestones Runs M7 (Nov/Dec 2014) First time with shifters back in the control room Almost all sub-detectors in, some without HV Solenoid and Toroid B-field on for part M8 (Feb 2015) Testing of new DAQ and Trigger software All sub-detectors integratedand running together at 100 kHz; Re-establish smooth running; continuous shift operation Full dry-run tests of LHC handshake, warm start, etc M9 (Mar 2015) Calibration and alignment cosmic data taking Runs through to beam splashes 6 17/04/2015ATLAS Readiness for Run2 CSN1 Slide 7 Preparation for Run 2 detector operation It's a long time since Run 1 We start with 7 manned desks in ACR, but several more under the scene for not standard operation (dominating in the first period) Many new Shifters and Experts Regular shift training 7 17/04/2015ATLAS Readiness for Run2 CSN1 Slide 8 Pixel and IBL 8 17/04/2015ATLAS Readiness for Run2 CSN1 Slide 9 Pixel Pixel successfully reinstalled after refurbishment on surface. Reduced from 5% to 2% faulty modules Installed extra fibers to better face with increased peak luminosity Replaced optoboards and located in a more accessible place. 9 17/04/2015ATLAS Readiness for Run2 CSN1 Slide 10 IBL IBL and Pixel are now being operated together: FEI3 (Pixel) and FEI4 (IBL), different off-detector hardware. IBL has started collecting cosmics data in M7 (IDcosmics trigger: ~ 1 Hz in Layer2, ~0.x Hz in IBL) First measurements in M7: 74 k good tracks in pixel, ~3k good clusters in IBL): 10 17/04/2015ATLAS Readiness for Run2 CSN1 Same tuning: Planar 200 m 3D 230 m Slide 11 IBL rotations (2 slides) 11 17/04/2015ATLAS Readiness for Run2 CSN1 Slide 12 SCT and TRT (spare) Expansion of DAQ to cope with higher pileup Increased number of ROD/BOC from 90 to 128 Pile-up limit well above Run 2 expectation 12 17/04/2015ATLAS Readiness for Run2 CSN1 High voltage ON in the entire detector Successfully tested operation at 100 kHz with up to 50% occupancy FastOR trigger in stable use during cosmic ray runs New active gas system Leaks can lead to contamination into active gas volume Baseline for 2015: operating part of the detector with Argon mixture instead of Xenon Impact on e/ -identification small after algorithm updates Slide 13 Liquid Argon Calorimeter All planned hardware maintenance work finished In January HV modules replaced on EMEC outer wheel and FCal Nominal HV for M8 Some improvements in LAr online software and DQ assessment Since M7 data taking with 4-sample mode up to 100 kHz Online flagging of noise bursts successfully tested during M8 with HV-ramp-induced noise bursts Automatic flagging of hot cells in trigger towers LAr Cryostat grounding Reminder: grounding inadvertently changed during LS1 No impact on LAr noise and noise bursts seen so far LAr Demonstrator crate backplane and modules installed for run-2 CHECK 13 17/04/2015ATLAS Readiness for Run2 CSN1 Slide 14 Hadronic Tile Calorimeter 14 17/04/2015ATLAS Readiness for Run2 CSN1 New Laser-II system under commissioning Improve long term stability control of the system First Cs scans performed and HV settings updated Preserve absolute EM scale as in Run 1 Minimum Bias Trigger Scintillators replaced Finalising commissioning Tile-Muon-Trigger Coincidence between Tile and TGC Trigger rate reduction in 1