A double-sided silicon micro-strip super-module for the ATLAS inner detector upgrade in the high-luminosity LHC

The ATLAS experiment is a general purpose detector aiming to fully exploit the discovery potential of the Large Hadron Collider (LHC) at CERN. It is foreseen that after several years of successful data-taking, the LHC physics programme will be extended in the so-called High-Luminosity LHC, where the instantaneous luminosity will be increased up to 5 × 1034 cm−2 s−1. For ATLAS, an upgrade scenario will imply the complete replacement of its internal tracker, as the existing detector will not provide the required performance due to the cumulated radiation damage and the increase in the detector occupancy. The current baseline layout for the new ATLAS tracker is an all-silicon-based detector, with pixel sensors in the inner layers and silicon micro-strip detectors at intermediate and outer radii. The super-module is an integration concept proposed for the strip region of the future ATLAS tracker, where double-sided stereo silicon micro-strip modules are assembled into a low-mass local support structure. An electrical super-module prototype for eight double-sided strip modules has been constructed. The aim is to exercise the multi-module readout chain and to investigate the noise performance of such a system. In this paper, the main components of the current super-module prototype are described and its electrical performance is presented in detail

A double-sided, shield-less stave prototype for the ATLAS upgrade strip tracker for the high luminosity LHC

A detailed description of the integration structures for the barrel region of the silicon strips tracker of the ATLAS Phase-II upgrade for the upgrade of the Large Hadron Collider, the so-called High Luminosity LHC (HL-LHC), is presented. This paper focuses on one of the latest demonstrator prototypes recently assembled, with numerous unique features. It consists of a shortened, shield-less, and double sided stave, with two candidate power distributions implemented. Thermal and electrical performances of the prototype are presented, as well as a description of the assembly procedures and tools

El ALBA-TCP : origen y fruto del nuevo regionalismo latinoamericano y caribeño

En la actualidad, la región de América Latina y el Caribe propone alternativas novedosas que se traducen en políticas públicas articuladas en torno a "soberanías y regionalismo" y vinculadas a nuevos modelos socioeconómicos. Se estructuran políticas públicas en torno a los componentes de las crisis: políticas públicas de soberana alimentaria, soberana energética, soberanía financiera y soberanía de los recursos naturales. Lo que distingue a estas nuevas soberanías vinculadas a regionalismos es que la teorización se localiza no solo en el ámbito tradicional de las relaciones internacionales, sino en conceptualizaciones más novedosas a partir de conceptos como bienes comunes, agroecología política y ambiental, la economía política de las reservas internacionales y la nueva arquitectura financiera, bienes y actores públicos estratégicos, economía política internacional de la vida cotidiana, otras economías para la vida, educación y acceso abierto, el Buen Vivir, y la cosmovisión de los pueblos originarios y de los afrodescendientes