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ACAT 2008

3–7 Nov 2008
Ettore Majorana Foundation and Centre for Scientific Culture
Europe/Zurich timezone

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Session

Data Analysis - Algorithms and Tools

4 Nov 2008, 14:00
Ettore Majorana Foundation and Centre for Scientific Culture

Ettore Majorana Foundation and Centre for Scientific Culture

Via Guarnotta, 26 - 91016 ERICE (Sicily) - Italy Tel: +39-0923-869133 Fax: +39-0923-869226 E-mail: hq@ccsem.infn.it

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  1. 35. VISPA: a Novel Concept for Visual Physics Analysis
    Tatsiana Klimkovich (RWTH-Aachen)
    04/11/2008, 14:00
    2. Data Analysis
    Parallel Talk
    VISPA is a novel graphical development environment for physics analysis, following an experiment-independent approach. It introduces a new way of steering a physics data analysis, combining graphical and textual programming. The purpose is to speed up the design of an analysis, and to facilitate its control. As the software basis for VISPA the C++ toolkit Physics eXtension Library (PXL) is...
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  2. 22. Petaminer: Efficient Navigation to Petascale Data Using Event-Level Metadata
    Alexandre Vaniachine (Argonne National Laboratory)
    04/11/2008, 14:25
    2. Data Analysis
    Parallel Talk
    HEP experiments at the LHC store petabytes of data in ROOT files described with TAG metadata. The LHC experiments have challenging goals for efficient access to this data. Physicists need to be able to compose a metadata query and rapidly retrieve the set of matching events. Such skimming operations will be the first step in the analysis of LHC data, and improved efficiency will facilitate the...
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  3. 215. Interactive Data Analysis with PROOF, Experience at GSI
    Anna Kreshuk (GSI)
    04/11/2008, 14:50
    2. Data Analysis
    Parallel Talk
    This presentation discusses activities at GSI to support interactive data analysis for the LHC experiment ALICE. GSI is a tier-2 centre for ALICE. One focus is a setup where it is possible to dynamically switch the resources between jobs from the Grid, jobs from the local batch system and the GSI Analysis Facility (GSIAF), a PROOF farm for fast interactive analysis. The second emphasis is on...
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  4. 19. C++ and Data
    Axel Naumann (CERN)
    04/11/2008, 15:15
    2. Data Analysis
    Parallel Talk
    High performance computing with a large code base and C++ has proved to be a good combination. But when it comes to storing data, C++ is a really bad choice: it offers no support for serialization, type definitions are amazingly complex to parse, and the dependency analysis (what does object A need to be stored?) is incredibly difficult. Nevertheless, the LHC data consists of C++ objects that...
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  5. 53. Alignment of the ATLAS Inner Detector tracking system
    Mr John Alison (Department of Physics and Astronomy, University of Pennsylvania)
    04/11/2008, 16:10
    2. Data Analysis
    Parallel Talk
    The CERN's Large Hadron Collider (LHC) is the world largest particle accelerator. It will collide two proton beams at an unprecedented center of mass energy of 14 TeV and first colliding beams are expected during summer 2008. ATLAS is one of the two general purpose experiments that will record the decay products of the proton-proton collisions. ATLAS is equipped with a charge particle...
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  6. 169. Recent Improvements of the ROOT Fitting and Minimization Classes
    Dr Lorenzo Moneta (CERN)
    04/11/2008, 16:35
    2. Data Analysis
    Parallel Talk
    Advanced mathematical and statistical computational methods are required by the LHC experiments for analyzing their data. Some of these methods are provided by the Math work package of the ROOT project, a C++ Object Oriented framework for large scale data handling applications. We present in detail the recent developments of this work package, in particular the recent improvements in the...
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  7. 176. Efficient Level 2 Trigger System Based on Artificial Neural Networks
    Ms Sonia Khatchadourian (ETIS - UMR CNRS 8051)
    04/11/2008, 17:00
    2. Data Analysis
    Parallel Talk
    The HESS project is a major international experiment currently performed in gamma astronomy. This project relies on a system of four Cherenkov telescopes enabling the observation of cosmic gamma rays. The outstanding performance obtained so far in the HESS experiment has led the research labs involved in this project to improve the existing system: an additional telescope is currently...
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  8. 177. Sophisticated algorithms of analysis of spectroscopic data
    Miroslav Morhac (Institute of Physics, Slovak Academy of Sciences)
    04/11/2008, 17:25
    2. Data Analysis
    Parallel Talk
    The accuracy and reliability of the analysis of spectroscopic data depend critically on the treatment in order to resolve strong peak overlaps, to account for continuum background contributions, and to distinguish artifacts to the responses of some detector types. Analysis of spectroscopic data can be divided to 1. estimation of peaks positions (peak searching) 2. fitting of peak...
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