CMS Software and Physic project at HIP V

CMS Software and Physic project at HIP V. Karimäki Project evaluation meeting CERN, May 22, 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 22 May 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 • Calibration and analysis of forthcoming real data! 22 May 2006 CMS Software and Physics 3

Project members in CMS 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 1997 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 eager to continue our work with real data next year after a very long period of preparations! 22 May 2006 CMS Software and Physics 4

i Lauri, Le Ritva, Tapio, Tomas, Sami, DAQ expert in computing physics H-> alignment specialist, simulation& specialist with clusters grid, tracks analysis talent Aatos, Geant 4, expert of hadronic processes Kati, CMS User Support Coordinator, electron rec. 22 May 2006 Jukka N, e/ detection, tracker/ecal beam tests CMS Software and Physics Jukka K, GRID computing, former project member 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 Vols 1 -2 • Active reporting in conferences • Referee work, thesis opponent (Ritva) • Ph. D thesis work (Lauri) 22 May 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) 22 May 2006 CMS Software and Physics 7

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! 22 May 2006 CMS Software and Physics 8

Track based alignment http: //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) • Ph. D thesis work (Tapio) Alignment can be crucial for new discoveries! http: //www. helsinki. fi/~karimaki/lhc/Alignment. Software. html 22 May 2006 CMS Software and Physics 9

Grid computing at HIP http: //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 22 May 2006 CMS Software and Physics 10

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 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 22 May 2006 CMS Software and Physics 11

Publications • http: //www. helsinki. fi/~karimaki/lhc/publ. And. Notes. 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 22 May 2006 CMS Software and Physics 12

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 22 May 2006 CMS Software and Physics 13

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 22 May 2006 CMS Software and Physics 14