Manchester Christmas Meeting 2006

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Manchester Christmas Meeting 2006

• OPAL
• ATLAS
• Trigger system commissioning
• Trigger configuration
• Trigger information in all data formats/DB
• Trigger analysis tools
• Top physics analysis
• Large scale testing of HLT farms on the Grid
• Our group effort in trigger and physics analysis
• Jet algorithm studies at the Tevatron/LHC (M.
  Wobisch)
• SUSY in e? collisions at the LC (A. Oh, A. De
  Roeck)

Thorsten Wengler Manchester, 21 Dec 06
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Trigger Commissioning
The ATLAS Trigger/DAQ project
T.W.
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We have built the first complete trigger chain in
the pit

• and taken data, e.g. here with field on!
• Final trigger electronics
• Using central trigger logic and timing signals
• Also integration with HLT has started

Cosmic data taking 18./19. Nov 2006, toroid field
on
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Installation is far from finished

• First out of 6 big wheels installed
• Fully equipped with trigger electronics
• Access and testing in the pit are a nightm
  challenge!
• First wheel took 6 month to install
• Time for remaining wheels is 6 month.
• Calorimeter trigger installation going on

TGC detectors with on-detectortrigger
electronics in cavern
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Trigger configuration
With Simon

• Working on main interface to operate the trigger
  online
• Java GUI
• DB structure
• Data handling offline
• Just had major review

Assignment of trigger thersholds to input cable
lines
Master view of Lvl1 configuration
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How to analyse trigger data in ATLAS

• CERN-ATL-COM-DAQ-2006-044
• With J. Haller, A. Hoecker, J. Stelzer
• What trigger data is needed to account for the
  trigger in analysis
• Where is it stored
• How is it accessed
• How does it fit into the picture of how we will
  do analysis in ATLAS
• ATLAS reference paper
• Editor of TDAQ/Lvl1 section
• To be submitted by June 07

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Next round of ATLAS physics notes (CSC)

• Development of trigger analysis tools
• With Simon, A. Krazsnahorkay, D. Berge
• Now used ATLAS wide
• Main editor for note on triggering top events
  (Spring 07)
• Analysis of top events
• Trigger studies (above Un-ki, Jenna, Jiri)
• Top cross section
• Include top properties with help from Christian

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Manchester GRID Tier 2 cluster as ATLAS HLT test
site
With A. Forti, S. Wheeler, H. Garitaonandia

• Up to 900 nodes
• Large system on short notice
• Regular release testing

Full dummy slice 64 nodes
77 node LVL2 system ran 48hrs
Full dummy slice 10 nodes
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Our group effort in trigger and physics analysis
not (yet) counting FP420/diffractive here.

• Resources needed (minimum)
• Enough people to make an impact and establish the
  group as the experts in one or more areas, say a
  50 involvement of
• 3 or more academic and research staff
• 2 or more postdocs
• 3-4 or more students
• Money for local computing equipment and travel

o.k.
o.k.
-1(2)
From last years Christmas meeting

• Trigger
• James, Paul B., Jiri - HLT running/monitoring
• Simon, Thorsten - configuration

• Analysis (including trigger studies)
• Paul B. - QGC
• Jenna, Fred, Simon, Thorsten, Un-ki, (Christian),
  (Paul M.) - top x-section, properties, top to
  charged Higgs, Joe - MC verification
• Jiri - jet physics (QCD?/top?)
• Steve, Paul M. - magnetic field mapping, ID
  alignment

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Backup Slides
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We have built the first complete trigger chain in
the pit
Calorimeters
RPC Detectors
TGC Detectors
Calorimeter Trigger
RPC muon Trigger
TGC muon Trigger
Mu-CTP Interface
Central Trigger Processor
LTP(I) /BUSY TTC
RoIs
Front-ends
Lvl2 Trigger
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ATLAS PIT, Jura side, 17 Dec 2006
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Linear collider studies SUSY
Assume and discovered at ?s 1TeV LC,
but gt 1/2 ?s ? can use e? collisions with
polarized photons to extend range
pe vs. cos(?e)
Sherpa TESLA Simdet 4 Det.-Sim.
Mo 500 GeV, P1
A.DeRoeck, A.Oh, T.W.
ECFA_at_ Durham04
Mo 700 GeV, P1
Will hopefully still lead to a paper.
Barger, Han, Kelly, hep-ph/9709366
etc
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Manchester Tier2 Grid Cluster for ATLAS HLT tests

• Aim Provision of Manchester Tier2 GRID cluster
  as a medium to large scale TDAQ testbed facility
  of up to 900 nodes, available at short notice
  (one week)
• Use HLT testing regular large scale multi-node
  testing (e.g. nightlies)
• Immediate plans consolidation and further
  testing of grid tools user documentation
• Regular maintenance Track pre-series releases
  regular running of a full partition regular
  reports to this(?) meeting
• Longer term debugging of TDAQ configurations and
  configuration database generation tools, HLT
  testing (algorithms) etc.

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Status

• grid-tdaq-tools have been developed
• reserve nodes provide list of reserved nodes
  (input to other tools)
• start pmg agents
• log collection
• log cleanup
• kill processes
• debug tools
• Image from point1 installed can run
  independently (without further modification)
• tdaq-01-04-01
• tdaq-01-06-01
• Will be usable by anyone with a valid GRID
  certificate (and who is a member of the ATLAS VO)

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Technical spec on Manchester Tier-2

• 1000 nodes (100 for engineers only)
• Currently split in 2 separate clusters (different
  s/w areas)
• Gb/s interfaces connected to 1 Gb/s rack
  switches each rack switchgroups 20 machines and
  is connected to a top level 10Gb/s cisco switch
• 2.8 GHz dual-cpu (Intel)
• OS SL3.0.4
• 4 GB of memory per node
• 500 GB disk per node
• http//www.gridpp.ac.uk/northgrid/manchester/
• http//www.gridpp.ac.uk/wiki/Manchester_(10_Questi
  ons)