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    The ALICE O2 common driver for the C-RORC and CRU read-out cards

    Boeschoten, Pascal, Costa, Filippo
    arXiv.org, Oct 16, 2017
    © ProQuest LLC All rights reserved, Engineering Database, Publicly Available Content Database, ProQuest Engineering Collection, ProQuest Technology Collection, ProQuest SciTech Collection, Materials Science & Engineering Database, ProQuest Central (new), ProQuest Central Korea, SciTech Premium Collection, Technology Collection, ProQuest Central Essentials, ProQuest One Academic, Engineering Collection (ProQuest)
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    Title: The ALICE O2 common driver for the C-RORC and CRU read-out cards
    Author: Boeschoten, Pascal; Costa, Filippo
    Contributor: Costa, Filippo (pacrepositoryorg)
    Subject: Mapping ; Data Transfer (Computers) ; Synchronism ; Radiation Counters ; Architecture ; Large Hadron Collider ; Ion Detectors ; Cards ; Shutdowns ; Levels ; Ionic Collisions ; Instrumentation and Detectors ; Other (Computer Science)
    Description: ALICE (A Large Ion Collider Experiment) is the heavy-ion detector designed to study the strongly interacting state of matter realized in relativistic heavy-ion collisions at the CERN Large Hadron Collider (LHC). A major upgrade of the experiment is planned during the 2019-2020 long shutdown. In order to cope with a data rate 100 times higher than during LHC Run 1 and with the continuous read-out of the Time Projection Chamber (TPC), it is necessary to upgrade the Online and Offline Computing to a new common system called O2 . The O2 read- out chain will use commodity x86 Linux servers equipped with custom PCIe FPGA-based read- out cards. This paper discusses the driver architecture for the cards that will be used in O2 : the PCIe v2 x8, Xilinx Virtex 6 based C-RORC (Common Readout Receiver Card) and the PCIe v3 x16, Intel Arria 10 based CRU (Common Readout Unit). Access to the PCIe cards is provided via three layers of software. Firstly, the low-level PCIe (PCI Express) layer responsible...
    Is part of: arXiv.org, Oct 16, 2017
    Identifier: 2331-8422 (E-ISSN)

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    The ALICE O2 common driver for the C-RORC and CRU read-out cards

    Boeschoten, Pascal, Costa, Filippo
    Cornell University
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    Title: The ALICE O2 common driver for the C-RORC and CRU read-out cards
    Author: Boeschoten, Pascal; Costa, Filippo
    Subject: Physics - Instrumentation And Detectors ; Computer Science - Other Computer Science
    Description: ALICE (A Large Ion Collider Experiment) is the heavy-ion detector designed to study the strongly interacting state of matter realized in relativistic heavy-ion collisions at the CERN Large Hadron Collider (LHC). A major upgrade of the experiment is planned during the 2019-2020 long shutdown. In order to cope with a data rate 100 times higher than during LHC Run 1 and with the continuous read-out of the Time Projection Chamber (TPC), it is necessary to upgrade the Online and Offline Computing to a new common system called O2 . The O2 read- out chain will use commodity x86 Linux servers equipped with custom PCIe FPGA-based read- out cards. This paper discusses the driver architecture for the cards that will be used in O2 : the PCIe v2 x8, Xilinx Virtex 6 based C-RORC (Common Readout Receiver Card) and the PCIe v3 x16, Intel Arria 10 based CRU (Common Readout Unit). Access to the PCIe cards is provided via three layers of software. Firstly, the low-level PCIe (PCI Express) layer responsible for the userspace interface for low-level operations such as memory mapping the PCIe BAR (Base Address Registers) and creating scatter-gather lists, which is provided by the PDA (Portable Driver Architecture) library developed by the Frankfurt Institute for Advanced Studies (FIAS). Above that sits our userspace driver which implements synchronization, controls the read-out card -- e.g. resetting and configuring the card, providing it with bus addresses to transfer data to and checking for data arrival -- and presents a uniform, high-level C++ interface that abstracts over the differences between the C-RORC and CRU. This interface -- of which direct usage is principally intended for high-performance read-out processes -- allows users to configure and use the various aspects of the read-out cards, such as configuration, DMA transfers and commands to the front-end. [...] Comment: 5 pages, 3 figures. ACAT 2017 conference proceedings
    Identifier: 1710.05607 (ARXIV ID)

    • Several versions

    Electromagnetic Characterisation of Materials by Using Transmission/Reflection (T/R) Devices

    Costa, Filippo, Borgese, Michele, Degiorgi, Marco, Monorchio, Agostino
    Electronics, 2017, Vol.6(4), p.95 [Peer Reviewed Journal]

    • Several versions

    Chipless Radio Frequency Identification (RFID) Sensor for Angular Rotation Monitoring

    Genovesi, Simone, Costa, Filippo, Borgese, Michele, Manara, Giuliano
    Technologies, Sep 2018, Vol.6(3) [Peer Reviewed Journal]

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    Wideband Scattering Diffusion by using Diffraction of Periodic Surfaces and Optimized Unit Cell Geometries

    Costa, Filippo, Monorchio, Agostino, Manara, Giuliano
    Scientific reports, 16 May 2016, Vol.6, pp.25458 [Peer Reviewed Journal]
    MEDLINE/PubMed (U.S. National Library of Medicine)
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    Title: Wideband Scattering Diffusion by using Diffraction of Periodic Surfaces and Optimized Unit Cell Geometries
    Author: Costa, Filippo; Monorchio, Agostino; Manara, Giuliano
    Subject: Biology;
    Description: A methodology to obtain wideband scattering diffusion based on periodic artificial surfaces is presented. The proposed surfaces provide scattering towards multiple propagation directions across an extremely wide frequency band. They comprise unit cells with an optimized geometry and arranged in a periodic lattice characterized by a repetition period larger than one wavelength which induces the excitation of multiple Floquet harmonics. The geometry of the elementary unit cell is optimized in order to minimize the reflection coefficient of the fundamental Floquet harmonic over a wide frequency band. The optimization of FSS geometry is performed through a genetic algorithm in conjunction with periodic Method of Moments. The design method is verified through full-wave simulations and measurements. The proposed solution guarantees very good performance in terms of bandwidth-thickness ratio and removes the need of a high-resolution printing process.
    Is part of: Scientific reports, 16 May 2016, Vol.6, pp.25458
    Identifier: 2045-2322 (E-ISSN); 27181841 Version (PMID); 10.1038/srep25458 (DOI)

    • Several versions

    Social Empowerment of Intellectually Impaired through a Cloud Mobile System

    Freina, Laura, Bottino, Rosa, Ott, Michela, Costa, Filippo
    Future Internet, 2015, Vol.7(4), p.429 [Peer Reviewed Journal]

    • Several versions

    Optimal Design of Miniaturized Reflecting Metasurfaces for Ultra-Wideband and Angularly Stable Polarization Conversion

    Borgese, Michele, Costa, Filippo, Genovesi, Simone, Monorchio, Agostino, Manara, Giuliano
    Scientific Reports (Nature Publisher Group), May 2018, Vol.8, pp.1-11 [Peer Reviewed Journal]

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    Large-scale assessment of research outputs through a weighted combination of bibliometric indicators

    Anfossi, Alberto, Ciolfi, Alberto, Costa, Filippo, Parisi, Giorgio, Benedetto, Sergio
    Scientometrics, 2016, Vol.107(2), pp.671-683 [Peer Reviewed Journal]
    Springer Science & Business Media B.V.
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    Title: Large-scale assessment of research outputs through a weighted combination of bibliometric indicators
    Author: Anfossi, Alberto; Ciolfi, Alberto; Costa, Filippo; Parisi, Giorgio; Benedetto, Sergio
    Subject: Bibliometric evaluation ; Institutional rankings ; Evaluation processes ; University policy
    Description: The paper describes a method to combine the information on the number of citations and the relevance of the publishing journal (as measured by the Impact Factor or similar impact indicators) of a publication to rank it with respect to the world scientific production in the specific subfield. The linear or non-linear combination of the two indicators is represented on the scatter plot of the papers in the specific subfield in order to immediately visualize the effect of a change in weights. The final rank of the papers is therefore obtained by partitioning the two-dimensional space through linear or higher order curves. The procedure is intuitive and versatile since it allows, after adjusting few parameters, an automatic and calibrated assessment at the level of the subfield. The derived evaluation is homogeneous among different scientific domains and can be used to address the quality of research at the departmental (or higher) levels of aggregation. We apply this method, that is designed to be feasible on a scale typical of a national evaluation exercise and to be effective in terms of cost and time, to some instances of the Thomson Reuters Web of Science database and discuss the results in view of what was done recently in Italy for the Evaluation of Research Quality exercise 2004–2010. We show how the main limitations of the bibliometric methodology used in that context can be easily overcome.
    Is part of: Scientometrics, 2016, Vol.107(2), pp.671-683
    Identifier: 0138-9130 (ISSN); 1588-2861 (E-ISSN); 10.1007/s11192-016-1882-9 (DOI)

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    An Inkjet Printed Chipless RFID Sensor for Wireless Humidity Monitoring

    Borgese, Michele, Costa, Filippo, Genovesi, Simone, Manara, Giuliano
    arXiv.org, Nov 16, 2017
    © ProQuest LLC All rights reserved, Engineering Database, Publicly Available Content Database, ProQuest Engineering Collection, ProQuest Technology Collection, ProQuest SciTech Collection, Materials Science & Engineering Database, ProQuest Central (new), ProQuest Central Korea, SciTech Premium Collection, Technology Collection, ProQuest Central Essentials, ProQuest One Academic, Engineering Collection (ProQuest)
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    Title: An Inkjet Printed Chipless RFID Sensor for Wireless Humidity Monitoring
    Author: Borgese, Michele; Costa, Filippo; Genovesi, Simone; Manara, Giuliano
    Contributor: Manara, Giuliano (pacrepositoryorg)
    Subject: Humidity ; Sensors ; Cardboard ; Radio Frequency Identification ; Relative Humidity ; Frequency Shift ; Inkjet Printing ; Error Detection ; Test Chambers ; Coding ; Unit Cell
    Description: A novel chipless RFID humidity sensor based on a finite Artificial Impedance Surface (AIS) is presented. The unit cell of the AIS is composed of three concentric loops thus obtaining three deep and high Q nulls in the electromagnetic response of the tag. The wireless sensor is fabricated using low-cost inkjet printing technology on a thin sheet of commercial coated paper. The patterned surface is placed on a metal backed cardboard layer. The relative humidity information is encoded in the frequency shift of the resonance peaks. Varying the relative humidity level from 50% to 90%, the frequency shift has proven to be up to 270MHz. The position of the resonance peaks has been correlated to the relative humidity level of the environment on the basis of a high number of measurements performed in a climatic chamber, specifically designed for RF measurements of the sensor. A very low error probability of the proposed sensor is demonstrated when the device is used with a 10% RH humidity level...
    Is part of: arXiv.org, Nov 16, 2017
    Identifier: 2331-8422 (E-ISSN)

    • Several versions

    A Circuit-based Model for the Interpretation of Perfect Metamaterial Absorbers

    Costa, Filippo, Genovesi, Simone, Monorchio, Agostino, Manara, Giuliano
    arXiv.org, Nov 8, 2012 [Peer Reviewed Journal]