32 research outputs found

    Technical design and performance of the NEMO3 detector

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    The development of the NEMO3 detector, which is now running in the Frejus Underground Laboratory (L.S.M. Laboratoire Souterrain de Modane), was begun more than ten years ago. The NEMO3 detector uses a tracking-calorimeter technique in order to investigate double beta decay processes for several isotopes. The technical description of the detector is followed by the presentation of its performance.Comment: Preprint submitted to Nucl. Instrum. Methods A Corresponding author: Corinne Augier ([email protected]

    PMm2: large photomultipliers and innovative electronics for the next-generation neutrino experiments

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    The next generation of proton decay and neutrino experiments, the post-SuperKamiokande detectors as those that will take place in megaton size water tanks, will require very large surfaces of photodetection and a large volume of data. Even with large hemispherical photomultiplier tubes, the expected number of channels should reach hundreds of thousands. A funded R&D program to implement a solution is presented here. The very large surface of photodetection is segmented in macro pixels made of 16 hemispherical (12 inches) photomultiplier tubes connected to an autonomous front-end which works on a triggerless data acquisition mode. The expected data transmission rate is 5 Mb/s per cable, which can be achieved with existing techniques. This architecture allows to reduce considerably the cost and facilitate the industrialization. This document presents the simulations and measurements which define the requirements for the photomultipliers and the electronics. A proto-type of front-end electronics was successfully tested with 16 photomultiplier tubes supplied by a single high voltage, validating the built-in gain adjustment and the calibration principle. The first tests and calculations on the photomultiplier glass led to the study of a new package optimized for a 10 bar pressure in order to sustain the high underwater pressure.Comment: 1 pdf file, 4 pages, 4 figures, NDIP08, submitted to Nucl. Instr. and Meth. Phys. Res.

    ATLAS liquid argon calorimeter front end electronics

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    The ATLAS detector has been designed for operation at CERN's Large Hadron Collider. ATLAS includes a complex system of liquid argon calorimeters. This paper describes the architecture and implementation of the system of custom front end electronics developed for the readout of the ATLAS liquid argon calorimeters

    Submissions of stakeholders on voluntary codes of conduct, guidelines and best practices, and/or standards in relation to access and benefit-sharing for all subsectors of genetic resources for food and agriculture

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    The Commission, at its Fourteenth Regular Session, requested its Secretary to invite stakeholder groups to report on voluntary codes of conduct, guidelines and best practices, and/or standards in relation to access and benefit-sharing for all subsectors of genetic resources for food and agriculture, and to compile them for consideration by the intergovernmental technical working groups and for review by the Commission at its Fifteenth Regular Session, while acknowledging that voluntary measures should not undermine legally binding provisions developed as part of domestic legislative, administrative or policy measures.1 By notification of 5 February 2014, the Secretary invited stakeholder groups to report on voluntary codes of conduct, guidelines and best practices, and/ or standards in relation to access and benefitsharing for all subsectors of genetic resources for food and agriculture. Stakeholders were also requested to point out model contractual clauses used in specific subsectors of genetic resources for food and agriculture. This document contains the submissions in the language in which they were received. It should be noted that similar information has been gathered by the Secretariat of the Convention on Biological Diversity (SCBD) and made available to the third session of the Open-ended Ad Hoc Intergovernmental Committee for the Nagoya Protocol on Access to Genetic Resources and the Fair and Equitable Sharing of Benefits Arising from their Utilization (24-28 February 2014)

    Possible consequences of the Nagoya Protocol for animal breeding and the worldwide exchange of animal genetic resources

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    The paper discusses animal genetic resources in the context of the Nagoya Protocol, providing an overview of the distinctive features and practices in this sector of genetic resources. It presents how animal genetic resources are utilized, who are the users and providers, and what are the trends in gene flow of these resources. The paper reflects on current access measures and arrangements for local breeds and for international commercial breeds. Key benefits arising from the international exchange of animal genetic resources for research and livestock production and current developments in the sector supporting the implementation of the Nagoya Protocol are presented. References to the scope and application of EU ABS legislation are also made. The paper underlines the importance of continuous undisturbed access to animal genetic resources for research and breeding to facilitate further development within the global livestock sector
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