The Compact Linear Collider (CLIC) - 2018 Summary Report

The Compact Linear Collider (CLIC) is a TeV-scale high-luminosity linear $e^+e^-$ collider under development at CERN. Following the CLIC conceptual design published in 2012, this report provides an overview of the CLIC project, its current status, and future developments. It presents the CLIC physics potential and reports on design, technology, and implementation aspects of the accelerator and the detector. CLIC is foreseen to be built and operated in stages, at centre-of-mass energies of 380 GeV, 1.5 TeV and 3 TeV, respectively. CLIC uses a two-beam acceleration scheme, in which 12 GHz accelerating structures are powered via a high-current drive beam. For the first stage, an alternative with X-band klystron powering is also considered. CLIC accelerator optimisation, technical developments and system tests have resulted in an increased energy efficiency (power around 170 MW) for the 380 GeV stage, together with a reduced cost estimate at the level of 6 billion CHF. The detector concept has been refined using improved software tools. Significant progress has been made on detector technology developments for the tracking and calorimetry systems. A wide range of CLIC physics studies has been conducted, both through full detector simulations and parametric studies, together providing a broad overview of the CLIC physics potential. Each of the three energy stages adds cornerstones of the full CLIC physics programme, such as Higgs width and couplings, top-quark properties, Higgs self-coupling, direct searches, and many precision electroweak measurements. The interpretation of the combined results gives crucial and accurate insight into new physics, largely complementary to LHC and HL-LHC. The construction of the first CLIC energy stage could start by 2026. First beams would be available by 2035, marking the beginning of a broad CLIC physics programme spanning 25-30 years

Advantages, Challenges and New Frontiers in Using Information Communication Technologies in Societal and Social Movement Research.

This paper includes a review of the main methodological trends and methods related to ICTs adopted in social movement research. It then reflects on the advantages and challenges of using ICTs for research. Finally, it suggests potential and new frontiers in the use of ICTs for research

Computer Enabled Social Movements? Usage of a Collaborative Web Platform within the European Social Forum

Abstract. Networks of social activists traditionally lack financial and human resources, resulting in low interest in employing sophisticated IT. There are not many studies describing the development and use of computer systems for networks of social activists. Especially with regard to web 2.0 applications, it is interesting to analyze how social activists appropriate social web platforms. In this paper we describe the usage of a collaborative platform called “OpenESF” by social activists taking part in the European Social Forum. The results of this study will provide us with an understanding of the needs of social activists for effective computer support and highlight directions for the redesign of OpenESF

Participation as a mechanism to favour psychological empowerment and positive interaction: The “Ágora Infantil” participatory democracy programme

This investigation aims to show the relationship between participation and psychological empowerment and between participation and interaction under an institutional political participation programme. This initiative known as Ágora Infantil (AI) is characterised by an obligatory draw‐ based deliberative participation methodology with superordinate goals based on group dynamics, with games playing a central role. The evaluation was carried out using a quasi‐experimental design, with quantitative measurements of the experimental and control groups, along with systematic observation of the target group. The results support the hypotheses proposed: Participation in the AI programme led to an increase in psychological empowerment and positive interactions between the participants. These results offer information as to what design should be used for these types of political initiatives to favour inclusion and empowerment of children, while at the same time improving classroom relationships