CMS Software and Physic project at HIPV. Karimäki

Project evaluation meeting

CERN, May 22, 2006

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Outline

●Our mission●Project members●Members' special talents●Physics simulation overview●Electron/gamma overview●Geant4 work●Track based alignment of tracker elements●Grid computing●Test beam work●Plans and future challenges

Our mission

• Physics simulation

• Detector simulation

• Developing reconstruction algorithms

• Preparation for physics analysis, discovery potentials

• Developing calibration algorithms, particularly track based alignment and ECAL energy calibration

• Test beam on-line + off-line software and analysis

• To take care of our share of CMS computing challenge

• Calibration and analysis of forthcoming real data!

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Project membersin CMS

Veikko Karimäki, PhD physicist 1990-Ritva Kinnunen, PhD physicist 1990- Kati Lassila-Perini, PhD physicist 1994-Sami Lehti, PhD physicist 1997-Tomas Linden, PhD physicist 1997-Aatos Heikkinen, PhD stud physicist 1996- Tapio Lampen, PhD stud physicist 1997-Jukka Nysten, PhD stud physicist 2000-Lauri Wendland, PhD stud physicist 1999-

In addition 2-4 Summer Trainees at CERN every yearTypical carrier path for young members: 1) CERN summer trainee2) diploma on particle physics 3) PhD studies in the projectWe are all physicists eager to continue our work with real data next yearafter a very long period of preparations!

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Project members

Aatos,Geant4,expert of hadronicprocesses

Sami,physicssimulation&analysistalent

Tomas,computingspecialist,grid, clusters

Tapio,expert inalignmentwith tracks

iRitva,

Ritva,physicssimulation&analysistalent

LeLauri,DAQ expertH->specialist

Kati,CMS User SupportCoordinator,electron rec.

Jukka N,e/detection,tracker/ecalbeam tests

Jukka K,GRID computing,former project member

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Physics simulation studieshttp://www.helsinki.fi/~karimaki/lhc/CMSReconstruction.html

• People involved: Ritva, Sami, Kati, Lauri, Aatos, Jukka, VK• MSSM H -> H± ->discovery potentials (Ritva, Sami, Lauri)• jet tagging for HLT and off-line (Lauri)• Tagging b jets with NN approach (Aatos, Sami)• Methods to enhance signal to background • CMKIN maintenance, kinematics generators interface (VK)

• Extensive contributions to the CMS PTDR Vols 1-2

• Active reporting in conferences• Referee work, thesis opponent (Ritva)• PhD thesis work (Lauri)

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Electron/photon physics & reconstr.http://www.helsinki.fi/~karimaki/lhc/CMSReconstruction.html

• Kati, Jukka N.• tracker/ECAL reconstruction• photon conversions in tracker• ECAL test beam activities• energy calibration algorithms

• Kati now a User Support Coordinator• PhD thesis work (Jukka)

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Geant4 activitieshttp://www.helsinki.fi/~karimaki/lhc/CMSReconstruction.html

• Aatos (also Tapio contributed earlier)• Aatos member of Geant4 Steering Board

Jorma member of the Geant4 Oversight Board• Aatos co-coordinator of the Geant4 hadronic processes• nuclear evaporation model implemented (Tapio)• intranuclear cascade model implemented (Aatos)• production runs (Aatos, Tomas)• extensive students education activities (CERN & Helsinki)• organization of ”Finnish Geant4 symposia” (2002, 2005)• refereeing of Geant4 related papers in IEEE (Aatos)• acquired expertise is beneficial also for CMS work!

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Track based alignmenthttp://www.helsinki.fi/~karimaki/lhc/CMSReconstruction.html

• Now Tapio and VK (earlier Aatos, Tomas, ...)

• Long term work and learning process

• Challenging mathematical formulations

• Innovation: H.I.P. algorithm (proved successful)

• Contributions to PTDR Vol 1

• Active reporting in conferences (Tapio)

• PhD thesis work (Tapio)

Alignment can be crucial for new discoveries!http://www.helsinki.fi/~karimaki/lhc/AlignmentSoftware.html

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Grid computing at HIPhttp://www.helsinki.fi/~karimaki/lhc/CMSReconstruction.html

• Tomas, HIP grid coordinator• Designed and built Mill cluster at campus site• Ametisti cluster, part of M-grid of Finnish universities• Active participation in NDGF meetings• Several co-operation parties:

– Finnish IT Scientific Centre– HIP technology program– Dept of Physical Sciences

• Aiming at Tier 2 services for LHC experiments in Finland

• Tier 1 for Nordic countries – a common effort

• Funding request several MEUR – growing optimism

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Test beam workhttp://www.helsinki.fi/~karimaki/lhc/CMSReconstruction.html

• Co-operation with the HIP tracker project

• Helsinki Silicon Beam Telescope (SiBT)

• Off-line analysis of test beam data (Tapio)

• Data acquisition code (Lauri)

• Developed alignment ideas

• Also involved in radiation hardness studies

• Very fruitful collaboration with tracker project!http://www.helsinki.fi/~karimaki/lhc/CMSReconstruction.html

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Publications

• http://www.helsinki.fi/~karimaki/lhc/publAndNotes.html

– Despite CMS is not a running experiment, the group has been active in publishing, especially CMS Notes, Analysis Notes, Internal Notes and contribution to TDR’s: total about 90 publications since the change of millenium

– Also refereed articles in scientific journals and conferences: total about 75 publications since the change of millenium

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Conference and workshop organizations

The project members have organized a number of symposia and workshops:

– CERN School of Computing, Aug 21-Sep 1, 2006, Helsinki

– 2nd Nordic Grid Neighbourhood Conference, Otaniemi, 31.5. – 2.6., 2006

– 2nd Finnish Geant Workshop, Helsinki, 6-7 June, 2005

– 1st Finnish Geant Workshop, Helsinki, 2003

– The 3rd Nordugrid Workshop, 24-25 May, 2002

– Workshop on b / tau Physics at the LHC, 30.5.-1.6., 2002

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Plans and future challenges

1 year goal (until the start of data taking mid 2007):• active tuning of the experiment software + documentation• active involvement in optimizing the alignment strategies• active involvement in designing the analysis strategies• collaboration with the HIP tracker project (test beam)

long term (data taking and running the experiment):

need all (and even more) manpower to:• maintain + improve software with real data• gradually improve the software alignment• control the quality of data• do competitive physics analysis