23 research outputs found

    The instrument suite of the European Spallation Source

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    An overview is provided of the 15 neutron beam instruments making up the initial instrument suite of the European Spallation Source (ESS), and being made available to the neutron user community. The ESS neutron source consists of a high-power accelerator and target station, providing a unique long-pulse time structure of slow neutrons. The design considerations behind the time structure, moderator geometry and instrument layout are presented. The 15-instrument suite consists of two small-angle instruments, two reflectometers, an imaging beamline, two single-crystal diffractometers; one for macromolecular crystallography and one for magnetism, two powder diffractometers, and an engineering diffractometer, as well as an array of five inelastic instruments comprising two chopper spectrometers, an inverse-geometry single-crystal excitations spectrometer, an instrument for vibrational spectroscopy and a high-resolution backscattering spectrometer. The conceptual design, performance and scientific drivers of each of these instruments are described. All of the instruments are designed to provide breakthrough new scientific capability, not currently available at existing facilities, building on the inherent strengths of the ESS long-pulse neutron source of high flux, flexible resolution and large bandwidth. Each of them is predicted to provide world-leading performance at an accelerator power of 2 MW. This technical capability translates into a very broad range of scientific capabilities. The composition of the instrument suite has been chosen to maximise the breadth and depth of the scientific impact o

    Big data surveillance and the body-subject

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    This paper considers the implications of big data practices for theories about the surveilled subject who, analysed from afar, is still gazed upon, although not directly watched as with previous surveillance systems. We propose this surveilled subject be viewed through a lens of proximity rather than interactivity, to highlight the normative issues arising within digitally mediated relationships. We interpret the ontological proximity between subjects, data flows and big data surveillance through Merleau-Ponty’s ideas combined with Levinas’ approach to ethical proximity and Coeckelberg’s work on proximity in the digital age. This leads us to highlight how competing normativities, and normative dilemmas in these proximal spaces, manipulate the surveilled subject’s embodied practices to lead the embodied individual towards experiencing them in a local sense. We explore when and how the subject notices these big data practices and then interprets them through translating their experiences into courses of action, inaction or acquiescence
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