Development of a target imaging system for the European Spallation Source

Nicolo Borghi*, Esben B. Klinkby, Bent Lauritzen, Eric Pitcher, Nigel Poolton, Luca Zanini

*Corresponding author for this work

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    Abstract

    At the European Spallation Source (ESS) neutrons will be produced by a proton beam impinging on a rotating target wheel. The technology of the target wheel, which comprises a large number of closely spaced tungsten bricks and is cooled by helium, is largely untested. The durability of the target wheel and hence the overall ESS neutronic performance depend on the integrity of the tungsten bricks. In order to monitor whether the target geometry is preserved over the expected 5 year lifetime of the target wheel, we propose a Target Imaging System (TIS). The TIS consists of a scintillator array detecting the collimated single photon emission (decay gammas) from the activated tungsten bricks. Preliminary Monte Carlo simulations support the feasibility of this imaging system. As a proof-of-principle, an experimental test-rig is being constructed allowing to test the main aspects of the imaging system under conditions relevant to ESS.
    Original languageEnglish
    Article number012020
    Book seriesJournal of Physics: Conference Series
    Volume1021
    Issue number1
    Number of pages4
    ISSN1742-6596
    DOIs
    Publication statusPublished - 2018
    Event22nd meeting of the International Collaboration on Advanced Neutron Sources - University of Oxford, Oxford, United Kingdom
    Duration: 27 Mar 201731 Mar 2017
    Conference number: 22

    Conference

    Conference22nd meeting of the International Collaboration on Advanced Neutron Sources
    Number22
    LocationUniversity of Oxford
    Country/TerritoryUnited Kingdom
    CityOxford
    Period27/03/201731/03/2017

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