8 research outputs found

    The ALICE experiment at the CERN LHC

    Get PDF
    ALICE (A Large Ion Collider Experiment) is a general-purpose, heavy-ion detector at the CERN LHC which focuses on QCD, the strong-interaction sector of the Standard Model. It is designed to address the physics of strongly interacting matter and the quark-gluon plasma at extreme values of energy density and temperature in nucleus-nucleus collisions. Besides running with Pb ions, the physics programme includes collisions with lighter ions, lower energy running and dedicated proton-nucleus runs. ALICE will also take data with proton beams at the top LHC energy to collect reference data for the heavy-ion programme and to address several QCD topics for which ALICE is complementary to the other LHC detectors. The ALICE detector has been built by a collaboration including currently over 1000 physicists and engineers from 105 Institutes in 30 countries. Its overall dimensions are 161626 m3 with a total weight of approximately 10 000 t. The experiment consists of 18 different detector systems each with its own specific technology choice and design constraints, driven both by the physics requirements and the experimental conditions expected at LHC. The most stringent design constraint is to cope with the extreme particle multiplicity anticipated in central Pb-Pb collisions. The different subsystems were optimized to provide high-momentum resolution as well as excellent Particle Identification (PID) over a broad range in momentum, up to the highest multiplicities predicted for LHC. This will allow for comprehensive studies of hadrons, electrons, muons, and photons produced in the collision of heavy nuclei. Most detector systems are scheduled to be installed and ready for data taking by mid-2008 when the LHC is scheduled to start operation, with the exception of parts of the Photon Spectrometer (PHOS), Transition Radiation Detector (TRD) and Electro Magnetic Calorimeter (EMCal). These detectors will be completed for the high-luminosity ion run expected in 2010. This paper describes in detail the detector components as installed for the first data taking in the summer of 2008

    Unpacking the Social Innovation Ecosystem: An empirically grounded Typology of empowering Network Constellations

    No full text
    Social innovation is on the rise as a mode of governance through which to address societal challenges. Seeking to empower SI initiatives, researchers and policy makers are concerned with the development of supportive ‘ecosystems’. This concept usefully calls attention to the distributed nature of SI agency, but many questions remain on the kinds of network constellations involved. This contribution unpacks the ‘SI ecosystems’ concept, specifying how the empowerment afforded through SI networks rests on 1) local embedding, 2) transnational connectivity and 3) discursive resonance. Charting the variety of network constellations as studied in an international comparison of 20 transnational SI networks, a typology of SI ecosystems is constructed. Distinguishing five SI ecosystem ideal-types ranging from loosely integrated and locally focused co-creation hubs to globally connected and widely resonating political movements, the typology informs a differentiated approach to their understanding and development.info:eu-repo/semantics/publishe

    Unpacking the Social Innovation Ecosystem: a typology of empowering network constellations

    No full text
    Social innovation is on the rise as a mode of governance through which to address societal challenges. Seeking to empower SI initiatives, researchers and policy makers are concerned with the development of supportive ‘ecosystems’. This concept usefully calls attention to the distributed nature of SI agency, but many questions remain on the kinds of network constellations involved. This contribution unpacks the ‘SI ecosystems’ concept, specifying how the empowerment afforded through SI networks rests on local embedding, transnational connectivity and discursive resonance. Charting the variety of network constellations as studied in an international comparison of 20 transnational SI networks, a typology of SI ecosystems is constructed that informs a differentiated approach to their understanding and development.info:eu-repo/semantics/publishe

    Towards a Transformative Social Innovation theory: a relational framework and 12 propositions

    No full text
    This paper makes a contribution to the identified need for conceptual clarity and new theory on social innovation. Specifically it addresses transformative social innovation (TSI), defined as the process of challenging, altering, or replacing the dominance of existing institutions in a specific social and material context. Social innovation initiatives and networks are understood as the key collective actors that instigate TSI processes. They do not all start out with transformative ambitions however. Of those that do, only a few eventually achieve transformative impacts; indeed there are many risks of capture and co-option along the way. A relational framing is presented as the most suitable way to theorise the emergent and multiply embedded nature of SI initiatives interacting with changing institutions, where organizational and institutional boundaries are often fluid and under negotiation. To develop middle-range theoretical insights on TSI, we conducted an empirical study of 20 transnational social innovation networks and about 100 associated social innovation initiatives over a four-year period. The resulting contribution towards the solidification of a theory of TSI, consists of three layers: firstly, the research design and methodology employed; secondly, a relational framework for TSI that articulates four key ‘clusters’ of (inter)relations in TSI processes; and, thirdly, a solidifying and iteratively developed set of theoretical propositions on TSI processes. These propositions articulate the complex and intertwined process-relations of TSI, based on our study of the empirics. The paper ends with an assessment of the contribution of this TSI-theorising, and a discussion of the challenge of further developing TSI theory.info:eu-repo/semantics/publishe

    Synthesis report: meta-analysis of Critical Turning Points in TSI: Deliverable D5.4

    No full text
    This deliverable is the synthesis report of work package 5 ‘Cases and Evidence – Meta analysis’. It presents the results of the meta-analysis of TSI propositions through the Critical Turning Points database. This database contains 65 local manifestations of transnational social innovation networks in 28 different countries, and almost 400 in-depth accounts of Critical Turning Points in the histories of these local manifestations. The synthesis provides empirical testing and substantiation of 12 propositions on TSI, as inputs for the final account of TSI theory.61316info:eu-repo/semantics/publishe

    Institutionalization Dialectics in Transformative Social Innovation: a comparative case study

    No full text
    Social innovation is increasingly believed to have a great potential for addressing persistent societal challenges such as sustainability, social inclusion, democratization and deprivation. We understand transformative social innovation (TSI) as social innovation that is aimed to challenge, alter, replace or provide alternatives to dominant institutions and structures. Efforts to institutionalize TSI ambitions tend to lead into a grey zone between transformation and reproduction. This contribution will follow earlier explorations into this territory that work with dialectical perspectives. As preparation for a broader comparative case study, we compare institutionalization dialectics as they unfolded in the cases of the Basic Income and Timebanks. We conclude with preliminary observations on these two cases, and evaluate how the dialectical framework helps to gain systematic insight into TSI institutionalization.info:eu-repo/semantics/nonPublishe

    History of hypertension, heart disease, and diabetes and ovarian cancer patient survival: evidence from the ovarian cancer association consortium

    No full text
    corecore