An approach for component-level analysis of cryogenic process in superconducting LINAC cryomodules

Cedric-Henry Lhomme, Hervé Saugnac, Patxi Duthil, Frederic Chatelet, Florian Dieudegard, Tomas Junquera, Daniel Berkowitz Zamora, Mário Grosso Xavier

    Research outputpeer-review


    Powerful superconducting linear accelerators feature accelerating sections consisting in a series of cryomod-ules (CM), each hosting superconducting radiofrequency (SRF) cavities cooled by a cryogenic process. Despite the extensive instrumentation used for the tests and valida-tion of the prototype cryomodules, it is usually very complex to link the measured global thermodynamic efficiency to the individual component performance. Previous works showed methods for assessing the global efficiency and even for allocating performances to sets of components, but few went down to a component level. For that purpose, we developed a set of techniques based on customized instrumentation, on dedicated test proto-cols, and on model-based analysis tools. In practice, we exposed the components to various operating conditions and we compared the measured data to the results from a detailed dynamic component model at the same condi-tions. This method was applied to the cryogenic debug-ging phase of the tests of the MINERVA prototype cry-omodule, which, despite the liquid helium shortage, led to an extensively detailed characterisation, for its valida-tion towards the serial construction.
    Original languageEnglish
    Title of host publicationLINAC2022
    Place of PublicationGeneva, Switzerland
    PublisherJACoW Publishing
    Number of pages4
    ISBN (Electronic)978-3-95450-215-8
    StatePublished - Sep 2022
    Event2022 - LINAC : International Linear Accelerator Conference - Liverpool
    Duration: 28 Aug 20222 Sep 2022

    Publication series

    NameInternational Linear Accelerator Conference
    PublisherJACoW publishing
    ISSN (Electronic)2226-0366


    Conference2022 - LINAC
    Country/TerritoryUnited Kingdom

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