Performance of the First ANTARES Detector Line

In this paper we report on the data recorded with the first Antares detector line. The line was deployed on the 14th of February 2006 and was connected to the readout two weeks later. Environmental data for one and a half years of running are shown. Measurements of atmospheric muons from data taken from selected runs during the first six months of operation are presented. Performance figures in terms of time residuals and angular resolution are given. Finally the angular distribution of atmospheric muons is presented and from this the depth profile of the muon intensity is derived.Comment: 14 pages, 9 figure

Time calibration of the ANTARES neutrino telescope

The ANTARES deep-sea neutrino telescope comprises a three-dimensional array of photomultipliers to detect the Cherenkov light induced by upgoing relativistic charged particles originating from neutrino interactions in the vicinity of the detector. The large scattering length of light in the deep sea facilitates an angular resolution of a few tenths of a degree for neutrino energies exceeding 10 TeV. In order to achieve this optimal performance, the time calibration procedures should ensure a relative time calibration between the photomultipliers at the level of similar to 1 ns. The methods developed to attain this level of precision are described

Performance of the front-end electronics of the ANTARES neutrino telescope

ANTARES is a high-energy neutrino telescope installed in the Mediterranean Sea at a depth of 2475 m. It consists of a three-dimensional array of optical modules, each containing a large photomultiplier tube. A total of 2700 front-end ASICs named Analogue Ring Samplers (ARS) process the phototube signals, measure their arrival time, amplitude and shape as well as perform monitoring and calibration tasks. The ARS chip processes the analogue signals from the optical modules and converts information into digital data. All the information is transmitted to shore through further multiplexing electronics and an optical link. This paper describes the performance of the ARS chip; results from the functionality and characterization tests in the laboratory are summarized and the long-term performance in the apparatus is illustrated.Comment: 20 pages, 22 figures, published in Nuclear Instruments and Methods

The politics of human rights in Brazil: Imposition of norms from without or innovation from within?

This thesis analyzes the construction of human rights norms, institutions, and practices in Brazil. Bridging international relations and comparative politics, this study builds on the literature of socialization to international norms. The study argues that, in the post-transition context of democratic politics, state and societal actors and interests play a primordial role in the promotion of human rights. It also suggests that the adoption of human rights norms is not only the result of international pressure, but also the consequence of the instrumentalization of norms by domestic actors. To demonstrate the impact of domestic dynamics on Brazil\u27s adaptation of international norms, the dissertation analyzes actors and political opportunity structures through three case-studies: police violence, racial discrimination, and AIDS. Brazil\u27s leadership in human rights norms illustrates the changing role of the state and the convergence between ought and want in the current context of democratization and globalization. Moreover, the analysis suggests that the promotion of human rights norms in Brazil is the fruit of an emerging diplomacy of human rights and the construction of new, sui generis modes of collaboration between state and civil society actors. Finally, the dissertation advances the argument that a process of human-rightization is transforming human rights by progressively encompassing a broad ensemble of norms, practices, and issues

Visões indígenas desafiando o global: mulheres Kichwa pluralizando a soberania

Trabalho de tradução da seguinte referência: PICQ, Manuela L. “Indigenous Worlding: Kichwa women pluralizing sovereignty”. In: Arlene B. Tickner e David L. Blaney (Eds.), Claiming the International. New York: Routledge, 2013, p. 121-140