1,938 research outputs found

    Readout and Data Acquisition in the NEXT-NEW Detector based on SRS-ATCA

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    The Scalable Readout System (SRS) was defined by the CERN RD51 Collaboration as a multi-channel, scalable readout platform for a wide range of front ends. In 2014, SRS was ported to the ATCA (Advanced Telecommunications Computing Architecture) standard. NEXT is an underground experiment aimed at searching for neutrinoless double-beta decay. NEXT-DEMO, a small-scale demonstrator, was read-out using SRS. NEXT has adopted SRS-ATCA for its first stage, called NEXT-NEW. Our presentation will describe the readout, DAQ and trigger for NEXT-NEW based on SRS-ATCA. This is, to our knowledge, the first experiment operating entirely on SRS-ATCA.Esteve Bosch, R.; Toledo AlarcĂłn, JF.; Rodriguez, J.; Querol, M.; Alvarez, V. (2016). Readout and Data Acquisition in the NEXT-NEW Detector based on SRS-ATCA. Journal of Instrumentation. 11(1):1-8. doi:10.1088/1748-0221/11/01/C01008S1811

    Development of the scalable readout system for micro-pattern gas detectors and other applications

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    Developed within RD51 Collaboration for the Development of Micro-Pattern Gas Detectors Technologies, the Scalable Readout System (SRS) is intended as a general purpose multichannel readout solution for a wide range of detector types and detector complexities. The scalable architecture, achieved using multi-Gbps point-to-point links with no buses involved, allows the user to tailor the system size to his needs. The modular topology enables the integration of different front-end ASICs, giving the user the possibility to use the most appropriate front-end for his purpose or to build a heterogeneous experimental apparatus which integrates different front-ends into the same DAQ system. Current applications include LHC upgrade activities, geophysics or homeland security applications as well as detector R&D. The system architecture, development and running experience will be presented, together with future prospects, ATCA implementation options and application possibilities.Martoiu, S.; Muller, H.; Tarazona MartĂ­nez, A.; Toledo AlarcĂłn, JF. (2013). Development of the scalable readout system for micro-pattern gas detectors and other applications. Journal of Instrumentation. 8(3):1-11. doi:10.1088/1748-0221/8/03/C03015S1118

    Measurement of the cross-section and charge asymmetry of WW bosons produced in proton-proton collisions at s=8\sqrt{s}=8 TeV with the ATLAS detector

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    This paper presents measurements of the W+→Ό+ÎœW^+ \rightarrow \mu^+\nu and W−→Ό−ΜW^- \rightarrow \mu^-\nu cross-sections and the associated charge asymmetry as a function of the absolute pseudorapidity of the decay muon. The data were collected in proton--proton collisions at a centre-of-mass energy of 8 TeV with the ATLAS experiment at the LHC and correspond to a total integrated luminosity of 20.2~\mbox{fb^{-1}}. The precision of the cross-section measurements varies between 0.8% to 1.5% as a function of the pseudorapidity, excluding the 1.9% uncertainty on the integrated luminosity. The charge asymmetry is measured with an uncertainty between 0.002 and 0.003. The results are compared with predictions based on next-to-next-to-leading-order calculations with various parton distribution functions and have the sensitivity to discriminate between them.Comment: 38 pages in total, author list starting page 22, 5 figures, 4 tables, submitted to EPJC. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-13

    Search for chargino-neutralino production with mass splittings near the electroweak scale in three-lepton final states in √s=13 TeV pp collisions with the ATLAS detector