CMS Physics Analysis Project at HIP V. Karimäki Helsinki 26.5.2008
Dec 14, 2015
CMS Physics Analysis Project/HIP 2
Outline●Activities
●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
Activities
• 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!
May 2008 CMS Physics Analysis Project/HIP 3
May 2008 CMS Physics Analysis Project/HIP 4
Project membersIn CMS
Jorma Tuominiemi, Prof. Physicist 1990-Veikko Karimäki, PhD physicist 1990-Ritva Kinnunen, PhD physicist 1990- Tapio Lampen, PhD physicist 1998-Kati Lassila-Perini, PhD physicist 1994-Sami Lehti, PhD physicist 1997-Tomas Linden, PhD physicist 1997-Aatos Heikkinen, PhD st. physicist 1996- Lauri Wendland, PhD st. physicist 1999-Matti Kortelainen, PhD st. physicist 2007-Mikko Voutilainen, PhD st. physicist 2008-
In addition 1-3 Summer Trainees at CERN every year
May 2008 CMS Physics Analysis Project/HIP 5
Project members
Aatos,Geant4, hadronicprocesses
Sami,physicssimulation&analysis
Tomas,computing,clusters,grid,
Tapio,Trackeralignmentwith tracks
i
Veikko,Project Leader
Ritva,physicssimulation&analysis
Le
Lauri,physics,H->
Kati,CMS User SupportCoordinator
Matti,physics,trackerbeam tests
Mikko,physics,jets
May 2008 CMS Physics Analysis Project/HIP 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)
May 2008 CMS Physics Analysis Project/HIP 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)
May 2008 CMS Physics Analysis Project/HIP 8
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!
May 2008 CMS Physics Analysis Project/HIP 10
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 CMS
participated 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
May 2008 CMS Physics Analysis Project/HIP 12
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
May 2008 CMS Physics Analysis Project/HIP 13
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
May 2008 CMS Physics Analysis Project/HIP 14
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
May 2008 CMS Physics Analysis Project/HIP 15
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
May 2008 CMS Physics Analysis Project/HIP 16
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