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CMS Software and Physic project at HIPV. Karimäki
Scientific Advisory Board
Helsinki, June 5, 2006
5th June , 2006 CMS Software and Physics 2
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
• Computing, calibration and analysis of forthcoming real data!
5th June, 2006 CMS Software and Physics 3
5th June, 2006 CMS Software and Physics 4
Project membersIn CMS
Jorma Tuominiemi Prof. Physicist 1990-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 1998-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 trainee
2) diploma on particle physics 3) PhD studies in the project
We are all physicists. Physics with real data is awaiting us next yearafter a very long period of preparations!
5th June, 2006 V. Karimäki: CMS Software and Physics 5
Project members
Aatos,Geant4,expert of hadronicprocesses
Sami,physicssimulation&analysistalent
Tomas,computingspecialist,grid, clusters
Tapio,expert inTrackeralignmentwith tracks
iJorma,CMSProgramDirector
Ritva,physicssimulation&analysistalent
Le
Lauri,DAQ expertH->specialist
Kati,CMS User SupportCoordinator,e/gamma rec
Jukkae/detection,tracker/ecalbeam tests
5th June, 2006 CMS Software and Physics 6
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 Vol 2
• Active reporting in conferences• Referee work, thesis opponent (Ritva)• PhD thesis work (Lauri)
5th June, 2006 CMS Software and Physics 7
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)
Module border corrections• The measured
energy is reduced at the module borders as the particle goes through less material.
Module
Module borders
E1 E2
5th June, 2006 CMS Software and Physics 9
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!
CMS Tracker
Artist viewTotal about 16000 modulesChallenging alignment task!
5th June, 2006 CMS Software and Physics 11
Track based alignmenthttp://www.hip.fi/cms/swph/AlignmentSoftware.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 CMS PTDR Vol 1
• Active reporting in conferences (Tapio)
• PhD thesis work (Tapio)
Alignment can be crucial for new discoveries!http://www.hip.fi/research/cms/swph/AlignmentSoftware.html
CMS Pixel
Alignment activities
Alignment with tracks with HIP algorithm
Helsinki Silicon Beam Telescope
Cosmic Rack setup
CMS Pixel
Misalignment simulation of CMSparticipated in SW development: tools and ready-made misalignment scenarios
Quality control of Tracker Outer Barrel (TOB) rod manufacturing
hands-on insight to misalignments
Cosmic Rack
SiBT
T.Lampén, VK
5th June, 2006 CMS Software and Physics 13
Grid computing at HIPhttp://www.hip.fi/research/cms/swph/grid.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
– Tomas member of the CERN sub-committee• Several co-operation parties:
– Finnish IT Centre for Science (CSC)– 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
5th June, 2006 CMS Software and Physics 14
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 expertise (Lauri)
• Developed alignment ideas
• Also involved in radiation hardness studies
• Very fruitful collaboration with tracker project!http://www.hip.fi/cms/swph/CMSReconstruction.html
5th June, 2006 CMS Software and Physics 15
Publications
• http://www.hip.fi/research/cms/swph/publAndNotes.html
– 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
5th June, 2006 CMS Software and Physics 16
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
5th June, 2006 CMS Software and Physics 17
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• strong response to the computing challengeIn short: computing, calibrations, physics analysis
Project evaluation 22.5.2006
http://www.hip.helsinki.fi/research/cms/swph/ProjectEvaluation220506/Sami_Physics_studies.ppt
Physics studies: S.Lehti, R.Kinnunen, L.Wendland
http://www.hip.helsinki.fi/research/cms/swph/ProjectEvaluation220506/Kati_egamma_physics.ppt
Electron/Gamma Physics: K.Lassila-Perini, J.Nysten
http://www.hip.helsinki.fi/research/cms/swph/ProjectEvaluation220506/Aatos_geant4_activities.pdf
Geant4 activities: A. Heikkinen
http://www.hip.helsinki.fi/research/cms/swph/ProjectEvaluation220506/Tapio_alignment.ppt
Detector alignment: T.Lampén
http://www.hip.helsinki.fi/research/cms/swph/ProjectEvaluation220506/Jukka_K_grid_computing_activities.pdf
Grid computing: J.Klem/ T.Lindén