Open access to high-level data and analysis tools in the CMS experiment at the LHC

21st International Conference on Computing in High Energy and Nuclear Physics

物理学;计算机科学

Calderon, A.^1 ; Colling, D.^2 ; Huffman, A.^2 ; Lassila-Perini, K.^3 ; McCauley, T.^4 ; Rao, A.^5 ; Rodriguez-Marrero, A.^1 ; Sexton-Kennedy, E.^6

IFCA, CSIC-Univ. de Cantabria, Santander, Spain^1

Department of Physics, Imperial College, London, United Kingdom^2

Helsinki Institute of Physics, Helsinki, Finland^3

University of Notre Dame, Notre Dame

IN, United States^4

University of the West of England, Bristol, United Kingdom^5

Fermi National Accelerator Laboratory, Batavia

IL, United States^6

关键词: Analysis tools;    Data preservations;    Event display;    LHC experiments;    Object data;    Proton proton collisions;    Public data;    Software environments;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/664/3/032027/pdf
DOI  :  10.1088/1742-6596/664/3/032027

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The CMS experiment, in recognition of its commitment to data preservation and open access as well as to education and outreach, has made its first public release of high-level data under the CC0 waiver: up to half of the proton-proton collision data (by volume) at 7 TeV from 2010 in CMS Analysis Object Data format. CMS has prepared, in collaboration with CERN and the other LHC experiments, an open-data web portal based on Invenio. The portal provides access to CMS public data as well as to analysis tools and documentation for the public. The tools include an event display and histogram application that run in the browser. In addition a virtual machine containing a CMS software environment along with XRootD access to the data is available. Within the virtual machine the public can analyse CMS data; example code is provided. We describe the accompanying tools and documentation and discuss the first experiences of data use.