CMS Software and Physic project at HIP V

CMS Software and Physic project at HIP V. Karimäki Scientific Advisory Board Helsinki, June 5, 2006

Outline ● Our mission ● Project members ● Members' special talents ● Physics simulation overview ● Electron/gamma overview ● Geant 4 work ● Track based alignment of tracker elements ● Grid computing ● Test beam work ● Plans and future challenges 5 th June , 2006 CMS Software and Physics 2

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! 5 th June, 2006 CMS Software and Physics 3

Project members In CMS Jorma Tuominiemi Prof. Physicist 1990 Veikko Karimäki, Ph. D physicist 1990 Ritva Kinnunen, Ph. D physicist 1990 Kati Lassila-Perini, Ph. D physicist 1994 Sami Lehti, Ph. D physicist 1997 Tomas Linden, Ph. D physicist 1997 Aatos Heikkinen, Ph. D stud physicist 1996 Tapio Lampen, Ph. D stud physicist 1998 Jukka Nysten, Ph. D stud physicist 2000 Lauri Wendland, Ph. D stud physicist 1999 In addition 2 -4 Summer Trainees at CERN every year Typical carrier path for young members: 1) CERN summer trainee 2) diploma on particle physics 3) Ph. D studies in the project We are all physicists. Physics with real data is awaiting us next year after a very long period of preparations! 5 th June, 2006 CMS Software and Physics 4

Project members Jorma, CMS Program Director Ritva, physics simulation& analysis talent Sami, physics simulation& analysis talent 5 th June, 2006 Kati, CMS User Support Coordinator, e/gamma rec Aatos, i Geant 4, expert of hadronic processes Tomas, computing specialist, grid, clusters Jukka e/ Le detection, tracker/ecal beam tests Tapio, expert in Tracker alignment with tracks V. Karimäki: CMS Software and Physics Lauri, DAQ expert H-> specialist 5

Physics simulation studies http: //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) • Ph. D thesis work (Lauri) 5 th June, 2006 CMS Software and Physics 6

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 • Ph. D thesis work (Jukka) 5 th June, 2006 CMS Software and Physics 7

Module border corrections • The measured energy is reduced at the module borders as the particle goes through less material. Module E 1 E 2 Module borders

Geant 4 activities http: //www. helsinki. fi/~karimaki/lhc/CMSReconstruction. html • Aatos (also Tapio contributed earlier) • Aatos member of Geant 4 Steering Board Jorma member of the Geant 4 Oversight Board • Aatos co-coordinator of the Geant 4 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 Geant 4 symposia” (2002, 2005) • refereeing of Geant 4 related papers in IEEE (Aatos) • acquired expertise is beneficial also for CMS work! 5 th June, 2006 CMS Software and Physics 9

CMS Tracker Total about 16000 modules Challenging alignment task! Artist view

Track based alignment http: //www. hip. fi/cms/swph/Alignment. Software. 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) • Ph. D thesis work (Tapio) Alignment can be crucial for new discoveries! http: //www. hip. fi/research/cms/swph/Alignment. Software. html 5 th June, 2006 CMS Software and Physics 11

Alignment activities Alignment with tracks with HIP algorithm Si. BT 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 T. Lampén, VK CMS Pixel Cosmic Rack

Grid computing at HIP http: //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 5 th June, 2006 CMS Software and Physics 13

Test beam work http: //www. helsinki. fi/~karimaki/lhc/CMSReconstruction. html • • Co-operation with the HIP tracker project Helsinki Silicon Beam Telescope (Si. BT) 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 5 th June, 2006 CMS Software and Physics 14

Publications • http: //www. hip. fi/research/cms/swph/publ. And. Notes. 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 5 th June, 2006 CMS Software and Physics 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 – 2 nd Nordic Grid Neighbourhood Conference, Otaniemi, 31. 5. – 2. 6. , 2006 – 2 nd Finnish Geant Workshop, Helsinki, 6 -7 June, 2005 – 1 st Finnish Geant Workshop, Helsinki, 2003 – The 3 rd Nordugrid Workshop, 24 -25 May, 2002 – Workshop on b / tau Physics at the LHC, 30. 5. -1. 6. , 2002 5 th June, 2006 CMS Software and Physics 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 challenge In short: computing, calibrations, physics analysis 5 th June, 2006 CMS Software and Physics 17

Project evaluation 22. 5. 2006 http: //www. hip. helsinki. fi/research/cms/swph/Project. Evaluation 220506/Sami_Physics_stu dies. ppt Physics studies: S. Lehti, R. Kinnunen, L. Wendland http: //www. hip. helsinki. fi/research/cms/swph/Project. Evaluation 220506/Kati_egamma_ph ysics. ppt Electron/Gamma Physics: K. Lassila-Perini, J. Nysten http: //www. hip. helsinki. fi/research/cms/swph/Project. Evaluation 220506/Aatos_geant 4_acti vities. pdf Geant 4 activities: A. Heikkinen http: //www. hip. helsinki. fi/research/cms/swph/Project. Evaluation 220506/Tapio_alignment. p pt Detector alignment: T. Lampén http: //www. hip. helsinki. fi/research/cms/swph/Project. Evaluation 220506/Jukka_K_grid_co mputing_activities. pdf Grid computing: J. Klem/ T. Lindén