Preliminary studies of the MINERVA cryogenic supply system

Frederic Michel, Daniel Berkowitz, Gerkotze Bonthuys, Jean-Marc Poncet, Francois Bonne, Francois Millet

    Research output


    MYRRHA (Multi-purpose hYbrid Research Reactor for High-tech Applications) will be composed of a 600 MeV LINear ACcelerator (LINAC) with a large number of cryomodules and a 100 MW thermal power subcritical nuclear reactor cooled by lead-bismuth. The MINERVA MYRRHA Isotopes productioN coupling the linEar acceleRator to the Versatile proton target fAcility) project is the first phase of the MYRRHA project composed of a 100 MeV, 4 mA continuous-wave proton LINAC. The MINERVA LINAC takes advantage of 60 superconducting radiofrequency (RF) cavities cooled at 2 K by saturated superfluid helium (He II). The MINERVA cryoplant will supply the required cryogenic cooling power of the LINAC through cryogenic lines and cryogenic valve boxes. This paper describes the LINAC cryogenic system supply architecture, the different operating modes, the heat loads, the cryoplant main requirements and the strategy to comply with high reliability requirements. The MINERVA cryoplant shall provide helium flows at 40 K for the thermal shielding, at 5 K for the cooling of the RF couplers and at 2 K for the 60 superconducting cavities installed in 30 cryomodules. The total equivalent refrigeration power of the MINERVA cryoplant is about 3.5 kW at 4.5 K. The cryoplant is composed of a warm compression station including sub-atmospheric volumetric compressors, helium gas storages and a refrigeration cold box with cold centrifugal compressors.
    Original languageEnglish
    Number of pages14
    StatePublished - 12 Nov 2023
    Event2023 - CEC/ICMC: 25th joint Cryogenic Engineering Conference and International Cryogenic Materials Conference - Hawai’i Convention Center, Honolulu
    Duration: 9 Jul 202313 Jul 2023


    Conference2023 - CEC/ICMC
    Country/TerritoryUnited States
    Internet address

    Cite this