9 research outputs found

    Studies of MCP-PMTs in the miniTimeCube neutrino detector

    Full text link
    This report highlights two different types of cross-talk in the photodetectors of the miniTimeCube neutrino experiment. The miniTimeCube detector has 24 8×88 \times 8-anode Photonis MCP-PMTs Planacon XP85012, totalling 1536 individual pixels viewing the 2-liter cube of plastic scintillator

    JUNO Conceptual Design Report

    Get PDF
    The Jiangmen Underground Neutrino Observatory (JUNO) is proposed to determine the neutrino mass hierarchy using an underground liquid scintillator detector. It is located 53 km away from both Yangjiang and Taishan Nuclear Power Plants in Guangdong, China. The experimental hall, spanning more than 50 meters, is under a granite mountain of over 700 m overburden. Within six years of running, the detection of reactor antineutrinos can resolve the neutrino mass hierarchy at a confidence level of 3-4σ\sigma, and determine neutrino oscillation parameters sin⁥2Ξ12\sin^2\theta_{12}, Δm212\Delta m^2_{21}, and ∣Δmee2∣|\Delta m^2_{ee}| to an accuracy of better than 1%. The JUNO detector can be also used to study terrestrial and extra-terrestrial neutrinos and new physics beyond the Standard Model. The central detector contains 20,000 tons liquid scintillator with an acrylic sphere of 35 m in diameter. ∌\sim17,000 508-mm diameter PMTs with high quantum efficiency provide ∌\sim75% optical coverage. The current choice of the liquid scintillator is: linear alkyl benzene (LAB) as the solvent, plus PPO as the scintillation fluor and a wavelength-shifter (Bis-MSB). The number of detected photoelectrons per MeV is larger than 1,100 and the energy resolution is expected to be 3% at 1 MeV. The calibration system is designed to deploy multiple sources to cover the entire energy range of reactor antineutrinos, and to achieve a full-volume position coverage inside the detector. The veto system is used for muon detection, muon induced background study and reduction. It consists of a Water Cherenkov detector and a Top Tracker system. The readout system, the detector control system and the offline system insure efficient and stable data acquisition and processing.Comment: 328 pages, 211 figure

    Insurgent capitalism: Island, bricolage and the re-making of finance

    Get PDF
    Drawing on recent discussions of the material cultures of markets and of financial innovation as bricolage, this paper explores the development of Island, a new share-trading venue set up in 1995. We examine Island's roots in a very specific conflict in the US financial markets and in the information libertarianism of 'hacker culture', and examine the material bricolage involved in Island's construction. The paper also outlines the processes that led to a dramatic 'Latourian' change of scale: Island was originally a 'micro' development on the fringes of US markets, but within little more than a decade key features of Island became close to compulsory, as the nature of North American and Western European share trading changed utterly

    Flood-Tracking Chart for the Chattahoochee River near Metropolitan Atlanta, Georgia

    Get PDF
    Proceedings of the 2007 Georgia Water Resources Conference, March 27-29, 2007, Athens, Georgia.The U.S. Geological Survey (USGS) operates a hydrologic monitoring network in the Chattahoochee River Basin (see Fig. 1), with support from the City of Atlanta, Georgia, as well as Federal, State, and local agencies. The network is comprised of several automated river stage stations that transmit stage data through satellite telemetry to the USGS Georgia Water Science Center in Atlanta, Georgia (see Fig. 2). Using data collected by this network, the USGS has compiled a flood-tracking chart for the Chattahoochee River near Metropolitan Atlanta.Sponsored and Organized by: U.S. Geological Survey, Georgia Department of Natural Resources, Natural Resources Conservation Service, The University of Georgia, Georgia State University, Georgia Institute of TechnologyThis book was published by the Institute of Ecology, The University of Georgia, Athens, Georgia 30602-2202. The views and statements advanced in this publication are solely those of the authors and do not represent official views or policies of The University of Georgia, the U.S. Geological Survey, the Georgia Water Research Institute as authorized by the Water Resources Research Act of 1990 (P.L. 101-397) or the other conference sponsors

    The Brand Authenticity Continuum: Strategic Approaches for Building Value

    No full text
    This article empirically examines the value derived by consumers through their use and consumption of authentic brands and the indirect value attributable to a brand. Our findings provide an understanding of the drivers of value along an authenticity continuum. We demonstrate that authenticity cues of quality commitment, heritage and sincerity have differential effects on a brand’s position along the authenticity continuum and consequently, authenticity strategies. This paper discusses implications where initially, brands move along the continuum with internally driven strategies (germination, cultivation and consolidation). However, to attain very high levels of authenticity, brands pursue an externally driven strategy (preservation) that acknowledges external stakeholder roles in the creation of very highly authentic brands. Directions for future research are also discussed
    corecore