Modelling of a high enriched uranium fission chamber with the code MCNPX

    Research outputpeer-review


    Fission chambers loaded with high enriched uranium are used for spent fuel measurement in the socalled Fork detector. The Fork-detector is one of the work-horses during safeguards inspection and is also being considered for a verification of operator declared data in Go-noGo measurement station on spent fuel element in an encapsulation plant.
    Having an accurate and validated model of the measurement equipment is beneficial for the investigation of this type of application. SCK•CEN is carrying out a significant effort to model the Fork detector with the MCNP code; however scarce information is known about the fission chambers.
    This work describes the impact of the design information of the fission chamber on the calculated detector sensitivity and on the overall Fork response using Monte Carlo simulations. The heavy ions transport in the active layer of the fission chamber was also studied and the resulting fission products energy spectra are compared with the available experimental data.
    Original languageEnglish
    Title of host publication ESARDA symposium 2013
    Subtitle of host publication35th annual meeting: Bruges, May 27-30, 2013. Part 1, Proceedings
    Place of PublicationItaly
    Number of pages8
    StatePublished - 31 May 2013
    Event2013 - ESARDA - European Safeguards Research & Development Association: 35th ESARDA Annual Meeting - SCK-CEN, Bruges
    Duration: 28 May 201330 May 2013


    Conference2013 - ESARDA - European Safeguards Research & Development Association

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