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Observation of Ultra-high-energy Cosmic Rays with the ANITA Balloon-borne Radio Interferometer (open access)

Observation of Ultra-high-energy Cosmic Rays with the ANITA Balloon-borne Radio Interferometer

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Date: June 28, 2013
Creator: Hoover, S.; Nam, J.; Gorham, P. W.; Grashorn, E.; Allison, P.; Barwick, S. W. et al.
System: The UNT Digital Library
Power Supply Changes for NSTX Resistive Wall Mode Coils (open access)

Power Supply Changes for NSTX Resistive Wall Mode Coils

The National Spherical Torus Experiment (NSTX) has been designed and installed in the existing facilities at Princeton Plasma Physics Laboratory (PPPL). Most of the hardware, plant facilities, auxiliary sub-systems, and power systems originally used for the Tokamak Fusion Test Reactor (TFTR) have been used with suitable modifications to reflect NSTX needs. Prior to 2004, the NSTX power system was feeding twelve (12) circuits in the machine. In 2004 the Resistive Wall Mode (RWM) Coils were installed on the machine to correct error fields. There are six of these coils installed around the machine in the mid-plane. Since these coils need fast and accurate controls, a Switching Power Amplifier (SPA) with three sub-units was procured, installed and commissioned along with other power loop components. Two RWM Coils were connected in series and fed from one SPA sub-unit. After the initial RWM campaign, operational requirements evolved such that each of the RWM coils now requires separate power and control. Hence a second SPA with three sub-units has been procured and installed. The second unit is of improved design and has the controls and power components completely isolated. The existing thyristor rectifier is used as DC Link to both of the Switching Power …
Date: June 28, 2013
Creator: Ramakrishnan, S S.
System: The UNT Digital Library
New Physics at the LHC. a Les Houches Report: Physics at TeV Colliders 2009 - New Physics Working Group (open access)

New Physics at the LHC. a Les Houches Report: Physics at TeV Colliders 2009 - New Physics Working Group

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Date: June 28, 2013
Creator: Brooijmans, G.; Grojean, C.; Kribs, G. D.; Shepherd-Themistocleous, C.; Agashe, K.; Basso, L. et al.
System: The UNT Digital Library
Test of Lepton Universality and Searches for Lepton Flavor Violation at BaBar (open access)

Test of Lepton Universality and Searches for Lepton Flavor Violation at BaBar

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Date: June 28, 2013
Creator: Guido, Elisa & /Genoa U. /INFN, Genoa
System: The UNT Digital Library
The Discovery of gamma-Ray Emission From The Blazar RGB J0710+591 (open access)

The Discovery of gamma-Ray Emission From The Blazar RGB J0710+591

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Date: June 28, 2013
Creator: Acciari, V. A.; Aliu, E.; Arlen, T.; Aune, T.; Bautista, M.; Beilicke, M. et al.
System: The UNT Digital Library
Hardwired Control Changes For NSTX DC Power Feeds (open access)

Hardwired Control Changes For NSTX DC Power Feeds

The National Spherical Torus Experiment (NSTX) has been designed and installed in the existing facilities at Princeton Plasma Physics Laboratory (PPPL). Most of the hardware, plant facilities, auxiliary sub-systems, and power systems originally used for the Tokamak Fusion Test Reactor (TFTR) have been used with suitable modifications to reflect NSTX needs. The original TFTR Hardwired Control System (HCS) with electromechanical relays was used for NSTX DC Power loop control and protection during NSTX operations. As part of the NSTX Upgrade, the HCS is being changed to a PLC-based system with the same control logic. This paper gives a description of the changeover to the new PLC-based system __________________________________________________
Date: June 28, 2013
Creator: Ramakrishnan, S.
System: The UNT Digital Library
The ATLAS Inner Detector Commissioning and Calibration (open access)

The ATLAS Inner Detector Commissioning and Calibration

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Date: June 28, 2013
Creator: Aad, G.
System: The UNT Digital Library
Fermi Large Area Telescope Constraints on the Gamma-ray Opacity of the Universe (open access)

Fermi Large Area Telescope Constraints on the Gamma-ray Opacity of the Universe

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Date: June 28, 2013
Creator: Abdo, A. A.; Ackermann, M.; Ajello, M.; Allafort, A.; Atwood, W. B.; Baldini, L. et al.
System: The UNT Digital Library
Fermi Observations of GRB 090510: a Short Hard Gamma-Ray Burst with an Additional, Hard Power-Law Component from 10 KeV to GeV Energies (open access)

Fermi Observations of GRB 090510: a Short Hard Gamma-Ray Burst with an Additional, Hard Power-Law Component from 10 KeV to GeV Energies

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Date: June 28, 2013
Creator: Ackermann, M.; Asano, K.; Atwood, W. B.; Axelsson, M.; Baldini, L.; Ballet, J. et al.
System: The UNT Digital Library
An Implication on the Pion Distribution Amplitude from the Pion-Photon Transition Form Factor with the New BaBar Data (open access)

An Implication on the Pion Distribution Amplitude from the Pion-Photon Transition Form Factor with the New BaBar Data

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Date: June 28, 2013
Creator: Wu, Xing-Gang & Huang, Tao
System: The UNT Digital Library
Using Weather Data and Climate Model Output in Economic Analyses of Climate Change (open access)

Using Weather Data and Climate Model Output in Economic Analyses of Climate Change

Economists are increasingly using weather data and climate model output in analyses of the economic impacts of climate change. This article introduces a set of weather data sets and climate models that are frequently used, discusses the most common mistakes economists make in using these products, and identifies ways to avoid these pitfalls. We first provide an introduction to weather data, including a summary of the types of datasets available, and then discuss five common pitfalls that empirical researchers should be aware of when using historical weather data as explanatory variables in econometric applications. We then provide a brief overview of climate models and discuss two common and significant errors often made by economists when climate model output is used to simulate the future impacts of climate change on an economic outcome of interest.
Date: June 28, 2013
Creator: Auffhammer, Maximilian; Hsiang, Solomon M.; Schlenker, Wolfram & Sobel, Adam H.
System: The UNT Digital Library
Collective behavior and evolutionary games - An introduction (open access)

Collective behavior and evolutionary games - An introduction

This article is an introduction to a special issue in Chaos, Solitons & Fractals with the goal of attracting submissions that identify unifying principles that describe the essential aspects of collective behavior, and which thus allow for a better interpretation and foster the understanding of the complexity arising in such systems.
Date: June 28, 2013
Creator: Perc, Matjaž & Grigolini, Paolo
System: The UNT Digital Library