Comparison of ILC Fast Beam-Beam Feedback Performance in the e−e−e^- e^- and e+e−e^+ e^- Modes of Operation

Several feedback loops are required in the Beam Delivery System (BDS) of the International Linear Collider (ILC) to preserve the luminosity in the presence of dynamic imperfections. Realistic simulations have been carried out to study the performance of the beam-beam deflection based fast feedback system, for both e+e- and e-e- modes of operation. The beam-beam effects in the e-e- collisions make both the luminosity and the deflections more sensitive to offsets at the interaction point (IP) than in the case of the e+e-collisions. This reduces the performance of the feedback system in comparison to the standard e+e- collisions, and may require a different beam parameter optimization

Beam Halo Measurements using Wire Scanners at ATF2

Work supported by Chinese Scholarship Council, FPA2010-21456-C02-01 and i-link 0704 - http://accelconf.web.cern.ch/AccelConf/IPAC2014/papers/thpme091.pdfInternational audienceBeam halo hitting on the beam pipe after the Interaction Point (IP) can generate a large amount of background for the measurements of the nano meter beam size using the laser interferometer beam size monitor (Shintake monitor) at ATF2. In order to investigate the beam halo transverse distribution, a diamond detector will be installed downstream of the IP. A feasibility study of a transverse halo collimation system to reduce the background for these measurements is also in progress. Prior to the diamond detector installation, a first attempt of beam halo measurements have been performed in 2013 using the currently installed wire scanners. Modeling of the beam halo distribution in the extraction (EXT) line was done and compared with the old modeling for ATF. Beam halo measurements were also done using the post-IP wire scanner to investigate the beam halo distribution at post- IP

The impact of point mutations in the human androgen receptor : classification of mutations on the basis of transcriptional activity

Peer reviewedPublisher PD

Air and water pollution over time and industries with stochastic dominance

We employ a stochastic dominance (SD) approach to analyze the components that contribute to environmental degradation over time. The variables include countries\u2019 greenhouse gas (GHG) emissions and water pollution. Our approach is based on pair-wise SD tests. First, we study the dynamic progress of each separate variable over time, from 1990 to 2005, within 5-year horizons. Then, pair-wise SD tests are used to study the major industry contributors to the overall GHG emissions and water pollution at any given time, to uncover the industry which contributes the most to total emissions and water pollution. While CO2 emissions increased in the first order SD sense over 15 years, water pollution increased in a second-order SD sense. Electricity and heat production were the major contributors to the CO2 emissions, while the food industry gradually became the major water polluting industry over time. SD sense over 15 years, water pollution increased in a second-order SD sense. Electricity and heat production were the major contributors to the CO2 emissions, while the food industry gradually

Early results of the LHCf experiment and their contribution to ultra-high-energy cosmic ray physics

LHCf is an experiment dedicated to the measurement of neutral particles emitted in the very forward region of LHC collisions. The physics goal is to provide data for calibrating hadron interaction models that are used in the study of Extremely High-Energy Cosmic-Rays. The LHCf experiment acquired data from April to July 2010 during commissioning time of LHC operations at low luminosity. Production spectra of photons and neutrons emitted in the very forward region (η> 8.4) have been obtained. In this paper preliminary results of the photon spectra taken at s√ = 7TeV are reported

The LHCf detector at the CERN Large Hadron Collider

LHCf is an experiment dedicated to the measurement of neutral particles emitted in the very forward region of LHC collisions. The physics goal is to provide data for calibrating the hadron interaction models that are used in the study of Extremely High-Energy Cosmic-Rays. This is possible since the laboratory equivalent collision energy of LHC is 10(17) eV. Two LHCf detectors, consisting of imaging calorimeters made of tungsten plates, plastic scintillator and position sensitive sensors, are installed at zero degree collision angle +/- 140m from an interaction point (IP). Although the lateral dimensions of these calorimeters are very compact, ranging from 20 mm x 20 mm to 40 mm x 40 mm, the energy resolution is expected to be better than 6% and the position resolution better than 0.2 mm for gamma-rays with energy from 100 GeV to 7 TeV. This has been confirmed by test beam results at the CERN SPS. These calorimeters can measure particles emitted in the pseudo rapidity range eta > 8.4. Detectors, data acquisition and electronics are optimized to operate during the early phase of the LHC commissioning with luminosity below 10(30) cm(-2)S(-1). LHCf is expected to obtain data to compare with the major hadron interaction models within a week or so of operation at luminosity similar to 10(29) cm(-2)s(-1). After similar to 10 days of operation at luminosity similar to 1029 cm(-2)s(-1), the light output of the plastic scintillators is expected to degrade by similar to 10% due to radiation damage. This degradation will be monitored and corrected for using calibration pulses from a laser

On the chronological structure of the solutrean in Southern Iberia

The Solutrean techno-complex has gained particular significance over time for representing a clear demographic and techno-typological deviation from the developments occurred during the course of the Upper Paleolithic in Western Europe. Some of Solutrean's most relevant features are the diversity and techno-typological characteristics of the lithic armatures. These have been recurrently used as pivotal elements in numerous Solutrean-related debates, including the chronological organization of the techno-complex across Iberia and Southwestern France. In Southern Iberia, patterns of presence and/or absence of specific point types in stratified sequences tend to validate the classical ordering of the techno-complex into Lower, Middle and Upper phases, although some evidence, namely radiocarbon determinations, have not always been corroborative. Here we present the first comprehensive analysis of the currently available radiocarbon data for the Solutrean in Southern Iberia. We use a Bayesian statistical approach from 13 stratified sequences to compare the duration, and the start and end moments of each classic Solutrean phase across sites. We conclude that, based on the current data, the traditional organization of the Solutrean cannot be unquestionably confirmed for Southern Iberia, calling into doubt the status of the classically defined type-fossils as precise temporal markers.Fundacao para a Ciencia e Tecnologia [PTDC/HAH/64184/2006, PTDC/HIS-ARQ/117540/2010, SFRH/BD/65527/2009, SFRH/BPD/96277/2013]; National Geographic Society [8045-06]; Wenner-Gren Foundation for Anthropological Research [8290

Exploring the contribution of alternative food networks to food security. A comparative analysis

[EN] Food (in)security has become a challenge not only for developing economies but also for High Income Countries. In parallel, food scholars have actively investigated the contribution of alternative food networks (AFNs) to the development of more sustainable and just food systems, paying attention to drivers, initiatives and policies supporting the development of alternatives to the dominant industrialised food system and its detrimental environmental and socio-economic impacts. However, few studies have directly addressed the contribution of AFNs to food security in the Global North. This paper aims to establish new linkages between food security debates and critical AFNs literature. For that purpose, we conduct a place-based approach to food security in a comparative analysis of initiatives of three different European contexts: Cardiff city-region (UK), the Flemish Region (Belgium) and the peri-urban area of the city of Valencia (Spain). The results unfold: i) how AFNs weave a more localised socio-economic fabric that creates new relationships between food security outcomes and specific territories, ii) hybridization processes within alternative but also conventional systems and iii) the role of advocacy and collective action at different levels. The analysis allows identification of key elements on which food security debates hinge and provides new insights to ground conceptual discussions on territorial and place-based food security approaches.This research is part of the project "Assessment of the impact of global drivers of change on Europe's food security" (TRANSMANGO), granted by the EU under 7th Framework Programme; theme KBBE.2013.2.5-01; Grant agreement no: 613532. Dr. Ana Moragues-Faus also acknowledges the funding of the European Commission and the Welsh Government that currently supports her Ser Cymru fellowship. 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