High Level Trigger Studies for the Efstathios (Stathis) Stefanidis

Slides:

Advertisements

Similar presentations

Freiburg Seminar, Sept Sascha Caron Finding the Higgs or something else ideas to improve the discovery ideas to improve the discovery potential at.

Advertisements

UK egamma meeting, Sept 22, 2005M. Wielers, RAL1 Status of Electron Triggers Rates/eff for different triggers Check on physics channels Crack region, comparison.

E.K.Stefanides March 07, The Muon Spectrometer of the ATLAS detector: progress report on construction and physics studies at the University of Athens.

B-tagging, leptons and missing energy in ATLAS after first data Ivo van Vulpen (Nikhef) on behalf of the ATLAS collaboration.

Digital Filtering Performance in the ATLAS Level-1 Calorimeter Trigger David Hadley on behalf of the ATLAS Collaboration.

Inefficiencies in the feet region 40 GeV muons selection efficiency   Barrel – End Cap transition 10th International Conference on Advanced Technology.

0 25. Sept 2006 M.Smizanska, Lancaster University, UK LHC preparations for precise measurements of muonic very rare B-decays 25. Sept 2006 M.Smizanska,

RAL Summer School September, 2004 Efstathios (Stathis) Stefanidis High Level Trigger Studies for the.

Valeria Perez Reale University of Bern SM Higgs Discovery Channels ATLAS High Level Trigger Trigger & Physics Selection Higgs Channels: Physics Performance.

A Fast Level 2 Tracking Algorithm for the ATLAS Detector Mark Sutton University College London 7 th October 2005.

CMS High Level Trigger Selection Giuseppe Bagliesi INFN-Pisa On behalf of the CMS collaboration EPS-HEP 2003 Aachen, Germany.

The Silicon Track Trigger (STT) at DØ Beauty 2005 in Assisi, June 2005 Sascha Caron for the DØ collaboration Tag beauty fast …

27 th June 2008Johannes Albrecht, BEACH 2008 Johannes Albrecht Physikalisches Institut Universität Heidelberg on behalf of the LHCb Collaboration The LHCb.

28/2/2006S. Rosati - MC Workshop1 Muon Identification and Reconstruction Stefano Rosati INFN – Roma 1.

The First-Level Trigger of ATLAS Johannes Haller (CERN) on behalf of the ATLAS First-Level Trigger Groups International Europhysics Conference on High.

Como, ICATPP 2009 R.Crupi 1 Roberto Crupi INFN Lecce & Physics Department, University of Salento - Italy on behalf of the ATLAS Collaboration 11 th ICATPP.

The ATLAS B physics trigger

July 7, 2008SLAC Annual Program ReviewPage 1 High-level Trigger Algorithm Development Ignacio Aracena for the SLAC ATLAS group.

The ATLAS trigger Ricardo Gonçalo Royal Holloway University of London.

Real Time 2010Monika Wielers (RAL)1 ATLAS e/  /  /jet/E T miss High Level Trigger Algorithms Performance with first LHC collisions Monika Wielers (RAL)

Online Measurement of LHC Beam Parameters with the ATLAS High Level Trigger David W. Miller on behalf of the ATLAS Collaboration 27 May th Real-Time.

General Trigger Philosophy The definition of ROI’s is what allows, by transferring a moderate amount of information, to concentrate on improvements in.

The SLHC and the Challenges of the CMS Upgrade William Ferguson First year seminar March 2 nd

BEACH Conference 2006 Leah Welty Indiana University BEACH /7/06.

IOP HEPP 6-8 April 2009Matthew Tamsett, RHUL 1 Determining the ATLAS electron trigger efficiency in BSM channels from Data Matthew Tamsett, RHUL Supervisor:

Tracking at the ATLAS LVL2 Trigger Athens – HEP2003 Nikos Konstantinidis University College London.

Overview of the High-Level Trigger Electron and Photon Selection for the ATLAS Experiment at the LHC Ricardo Gonçalo, Royal Holloway University of London.

Tracking at LHCb Introduction: Tracking Performance at LHCb Kalman Filter Technique Speed Optimization Status & Plans.

Faster tracking in hadron collider experiments  The problem  The solution  Conclusions Hans Drevermann (CERN) Nikos Konstantinidis ( Santa Cruz)

Sez. di Lecce Universita` degli Studi del Salento The Muon Trigger in ATLAS Giovanni Siragusa On behalf of the ATLAS Muon Trigger group.

HEP 2005 WorkShop, Thessaloniki April, 21 st – 24 th 2005 Efstathios (Stathis) Stefanidis Studies on the High.

ATLAS ATLAS Week: 25/Feb to 1/Mar 2002 B-Physics Trigger Working Group Status Report

Tracking at Level 2 for the ATLAS High Level Trigger Mark Sutton University College London 26 th September 2006.

Primary Vertex Reconstruction in the ATLAS Experiment at LHC K. Prokofiev (University of Sheffield) (in part supported by EU FP6 Research Training Network.

Valeria Perez Reale University of Bern On behalf of the ATLAS Physics and Event Selection Architecture Group 1 ATLAS Physics Workshop Athens, May

IOP HEPP: Beauty Physics in the UK, 12/11/08Julie Kirk1 B-triggers at ATLAS Julie Kirk Rutherford Appleton Laboratory Introduction – B physics at LHC –

Muon Trigger Slice Report Sergio Grancagnolo for the Muon Trigger group INFN-University of Lecce CERN Jan 23, 2007.

Artemis School On Calibration and Performance of ATLAS Detectors Jörg Stelzer / David Berge.

Overview of the High-Level Trigger Electron and Photon Selection for the ATLAS Experiment at the LHC Ricardo Gonçalo, Royal Holloway University of London.

G Watts/UW Seattle2 SM Hidden Sector Phenomenology as complex as you wish Decay back to SM particles Scalar.

7 October 2004Steve Armstrong ATLAS Overview Week Freiburg1 Online Physics Event Selection: The e /  Slice Steve Armstrong Brookhaven National Laboratory.

ATLAS and the Trigger System The ATLAS (A Toroidal LHC ApparatuS) Experiment is one of the four major experiments operating at the Large Hadron Collider.

1 OO Muon Reconstruction in ATLAS Michela Biglietti Univ. of Naples INFN/Naples Atlas offline software MuonSpectrometer reconstruction (Moore) Atlas combined.

TRIGGERING IN THE ATLAS EXPERIMENT Thomas Schörner-Sadenius UHH Teilchenphysik II 4. November 2005.

Performance of the ATLAS Trigger with Proton Collisions at the LHC John Baines (RAL) for the ATLAS Collaboration 1.

Trigger study on photon slice Yuan Li Feb 27 th, 2009 LPNHE ATLAS group meeting.

A Fast Hardware Tracker for the ATLAS Trigger System A Fast Hardware Tracker for the ATLAS Trigger System Mark Neubauer 1, Laura Sartori 2 1 University.

La Thuile, March, 15 th, 2003 f Makoto Tomoto ( FNAL ) Prospects for Higgs Searches at DØ Makoto Tomoto Fermi National Accelerator Laboratory (For the.

ATLAS and the Trigger System The ATLAS (A Toroidal LHC ApparatuS) Experiment [1] is one of the four major experiments operating at the Large Hadron Collider.

Gordon Watts University of Washington – Seattle CPPM – Marseille Seminar Queen Mary – University of London May 27, m H Living Long at ATLAS.

Di-muon decays of J/ψ mesons and Z bosons have been used to study the muon reconstruction and identification efficiency of the ATLAS detector as a function.

Nikhef Scientific Meeting 2000Onne Peters D0 Muon Spectrometer December 14-15, Amsterdam Onne Peters Nikhef Jamboree 2000.

ATLAS UK physics meeting, 10/01/08 1 Triggers for B physics Julie Kirk RAL Overview of B trigger strategy Algorithms – current status and plans Menus Efficiencies.

ATLAS B trigger Overview of B trigger Di-muon algorithms Performance (efficiency/rates) Menu for data taking experience 7/1/20101ATLAS UK Meeting,

Iterative local  2 alignment algorithm for the ATLAS Pixel detector Tobias Göttfert IMPRS young scientists workshop 17 th July 2006.

Measuring the B+→J/ψ (μμ) K+ Channel with the first LHC data in Atlas

Commissioning of the ATLAS High Level Trigger

Simone Gennai on Behalf of the CMS and ATLAS collaboration

The CMS High-Level Trigger

Particle detection and reconstruction at the LHC (IV)

Michele Pioppi* on behalf of PRIN _005 group

OO Muon Reconstruction in ATLAS

Kevin Burkett Harvard University June 12, 2001

H Y P A T I A HYbrid Pupil’s Analysis Tool for Interactions in Atlas

The Silicon Track Trigger (STT) at DØ

The First-Level Trigger of ATLAS

MOORE (Muon Object Oriented REconstruction) MuonIdentification

Julie Kirk Rutherford Appleton Laboratory

Samples and MC Selection

M.Biglietti (Univ. Naples and INFN Naples)

Presentation transcript:

High Level Trigger Studies for the Efstathios (Stathis) Stefanidis ATLAS Detector Efstathios (Stathis) Stefanidis 1st Year Transfer Report, University College London June, 11th 2004 Stefanidis E.

OUTLINE The ATLAS Detector : Overview. The Trigger System. Overview. High Level Trigger. Performance Studies. IDScan. e/γ vertical slice. RoI size. Future Plans. June, 11th 2004 Stefanidis E.

The ATLAS Detector: Overview. pp colliding beams 14 TeV c.m. energy. Design Luminosity: L=1034 cm-2s-1. Three Parts: Inner Detector Calorimeter (EM – HAD) Muon Spectrometer Magnet System: Solenoid: 2 T Toroid: 0.4 T June, 11th 2004 Stefanidis E.

The Trigger System: Overview. LVL1: 40 MHz  75 kHz < 2.5 μs Hardware trigger Reduced granularity information High Level Trigger (HLT) LVL2: 75 kHz  2 kHz 10 ms Full granularity information from both ID and Calorimeter RoI mechanism Event Filter (EF): 2 kHz  100 Hz  2s Sophisticated algorithms Alignment data available June, 11th 2004 Stefanidis E.

The Trigger System: HLT. Event Selection Strategy: Signature validation Checks for signatures coming from interesting physics events REJECT UNINTERESTING EVENTS VERY EARLY Objects Selection Signatures Physics Coverage Electron e25i, 2e25i Higgs (SM, MSSM), new gauge bosons etc Jet j400, 3j150 SUSY, compositeness, resonances etc. RoI mechanism (i) Defines the area where HLT will start from. (ii) Seeded by LVL1 (iii) Only the data needed are transferred  MINIMISE THE PROCESSING TIME AND NETWORK TRAFFIC June, 11th 2004 Stefanidis E.

The Trigger System: HLT. Event Selection Software: ATHENA Written using GAUDI architecture Provides common services (Transient Data Store, Histograms, Auditing etc) Well-defined interface not only to developers but also to the end-users IMPROVE COHERENCY OF THE DIFFERENT SOFTWARE DOMAINS IDScan LVL2 track reconstruction algorithm SPACE POINTS as input – Track parameters as output Runs several times per event and once per RoI z-Finder Hit Filter Group Cleaner Track Fitter June, 11th 2004 Stefanidis E.

Performance Studies: IDScan. z-Finder σ=179.9 μm I. II. III. Total Efficiency Efficiency: |Zgen – Zrec | < 1 mm June, 11th 2004 Stefanidis E.

Performance Studies: IDScan. Pattern Recognition Algorithms Low Luminosity High Luminosity IDScan (89.0 ± 0.4) % (82.9 ± 0.5) % xKalman (88.9 ± 0.4) % (84.0 ± 0.5) % iPatRec (87.2 ± 0.4) % (82.2 ± 0.5) % |pTgen – pTrec|<15 GeV |ηgen – ηrec|<0.01 |φgen – φrec|<0.01 rads June, 11th 2004 Stefanidis E.

Performance Studies: e/γ slice. Determine selection efficiencies and rates at each Trigger Level. Apply isolation, energy, tracking matching etc cuts. Trigger Level % Efficiency w.r.t LVL1 Rate LVL1 100 7.9 kHz LVL2Calo 95.7 1.9 kHz LVL2ID 88.4 359.1 Hz LV2IDCalo 86.3 136.1 Hz EFCalo 84.8 92.3 Hz EFID 80.0 64.1 Hz EFIDCalo 73.4 31.1 Hz Electron selection Weνe sample 22.5 GeV June, 11th 2004 Stefanidis E.

Performance Studies: RoI size. Preliminary study Current size of RoI: ΔηxΔφ = 0.2x0.2 COULD IT BE LESS ?  Reduce requested data + processing time June, 11th 2004 Stefanidis E.

Performance Studies: RoI size. φ resolution: 3mrad Cut at z  2 mm η resolution: STRONG DEPENDENCE ON Z POSITION OF VERTEX ! ! ! Barrel: σZ =0.86 cm EndCap: σρ =0.35 cm June, 11th 2004 Stefanidis E.

Future Plans. Performance Studies IDScan : Optimize the size the RoI e/γ analysis : Improve, validate, optimize the cuts 2004 TestBeam : Study the timing perfomance Physics Studies Low Mass Higgs (mH<150 GeV) Hγγ Hbb Study the full production/simulation/reconstruction chain. June, 11th 2004 Stefanidis E.