cms physics analysis project at hip v. karimäki helsinki 26.5.2008

CMS Physics Analysis Project at HIP

V. Karimäki

Helsinki 26.5.2008

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


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


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


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)

http://www.hip.fi/research/cms/swph/CMSReconstruction.html


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)

http://www.helsinki.fi/~karimaki/lhc/CMSReconstruction.html


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!


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

http://www.hip.fi/cms/swph/AlignmentSoftware.html

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


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

http://www.hip.fi/research/cms/swph/grid.html


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


http://www.hip.fi/cms/swph/CMSReconstruction.html


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

http://www.hip.fi/research/cms/swph/publAndNotes.html


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


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











cms physics analysis project at hip v. karimäki helsinki 26.5.2008

Documents

project members aatos

geant4 activities http

aatos production

cms jorma tuominiemi

cms ptdr vol

year slide

h kati

nn approach aatos