Quality assurance procedures for the neutron beam monitors at the FiR 1 BNCT facility

Iiro Auterinen, Tom Serén, Petri Kotiluoto, Jouni Uusi-Simola, Sauli Savolainen

    Research output: Contribution to journalArticleScientificpeer-review

    8 Citations (Scopus)


    In order to assure the stability of the beam, the reliability of the beam monitoring system and the quality of the patient dose delivered, several procedures are followed at the FiR 1 epithermal beam in Finland. Routine procedures include in-phantom activation measurements before each patient treatment and a long-term follow-up of the results. The sensitivity of the beam monitors to external objects in the beam and to variations in the control rod positions in the reactor has been checked and found insignificant. The linearity of the beam monitor channels has been checked with activation measurements. It was found that due to saturation effects a correction of 11% has to be applied when extrapolating results from experiments at low power to full power using the reference monitor channel. The correction is even larger for other channels with higher count rates.

    Original languageEnglish
    Pages (from-to)1015-1019
    Number of pages5
    JournalApplied Radiation and Isotopes
    Issue number5
    Publication statusPublished - 1 Nov 2004
    MoE publication typeA1 Journal article-refereed


    • Beam monitoring
    • BNCT
    • Non-linearity
    • Quality assurance


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