On line neutron beam monitoring of the finnish BNCT facility

Vesa Tanner, Iiro Auterinen, Jori Helin, Antti Kosunen, Sauli Savolainen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    A Boron Neutron Capture Therapy (BNCT) facility has been built at the FiR 1 research reactor of VTT Chemical Technology in Espoo, Finland. The facility is currently undergoing dosimetry characterisation and neutron beam operation research for clinical trials. The healthy tissue tolerance study, which was carried out in the new facility during spring 1998, demonstrated the reliability and user-friendliness of the new on line beam monitoring system designed and constructed for BNCT by VTT Chemical Technology. The epithermal neutron beam is monitored at a bismuth gamma shield after an alurniniumfluoride-aluminium moderator. The detectors are three pulse mode U235-fission chambers for epithermal neutron fluence rate and one current mode ionisation chamber for gamma dose rate. By using different detector sensitivities the beam intensity can be measured over a wide range of reactor power levels (0.001-250 kW). The detector signals are monitored on line with a virtual instrumentation (LabView) based PC-program, which records and displays the actual count rates and total counts of the detectors in the beam. Also reactor in-core power instrumentation and control rod positions can be monitored via another LabView application. The main purpose of the monitoring system is to provide a dosimetric link to the dose in patient during the treatment, as the fission chamber count rates have been calibrated to the induced thermal neutron fluence rate and to the absorbed dose rate at reference conditions in a tissue substitute phantom.
    Original languageEnglish
    Title of host publication15th European TRIGA Conference
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Pages181-189
    ISBN (Print)951-38-5273-3
    Publication statusPublished - 2000
    MoE publication typeA4 Article in a conference publication
    Event15th European TRIGA Conference - Espoo, Finland
    Duration: 15 Jun 199817 Jun 1998

    Publication series

    SeriesVTT Symposium
    Number197
    ISSN0357-9387

    Conference

    Conference15th European TRIGA Conference
    CountryFinland
    CityEspoo
    Period15/06/9817/06/98

    Fingerprint

    neutron beams
    therapy
    boron
    neutrons
    dosage
    fission
    detectors
    fluence
    operations research
    chambers
    reactors
    control rods
    power reactors
    signal detectors
    Finland
    moderators
    ionization chambers
    thermal neutrons
    bismuth
    dosimeters

    Cite this

    Tanner, V., Auterinen, I., Helin, J., Kosunen, A., & Savolainen, S. (2000). On line neutron beam monitoring of the finnish BNCT facility. In 15th European TRIGA Conference (pp. 181-189). Espoo: VTT Technical Research Centre of Finland. VTT Symposium, No. 197
    Tanner, Vesa ; Auterinen, Iiro ; Helin, Jori ; Kosunen, Antti ; Savolainen, Sauli. / On line neutron beam monitoring of the finnish BNCT facility. 15th European TRIGA Conference. Espoo : VTT Technical Research Centre of Finland, 2000. pp. 181-189 (VTT Symposium; No. 197).
    @inproceedings{4a40e562ed90450a907a9e1f24f604fb,
    title = "On line neutron beam monitoring of the finnish BNCT facility",
    abstract = "A Boron Neutron Capture Therapy (BNCT) facility has been built at the FiR 1 research reactor of VTT Chemical Technology in Espoo, Finland. The facility is currently undergoing dosimetry characterisation and neutron beam operation research for clinical trials. The healthy tissue tolerance study, which was carried out in the new facility during spring 1998, demonstrated the reliability and user-friendliness of the new on line beam monitoring system designed and constructed for BNCT by VTT Chemical Technology. The epithermal neutron beam is monitored at a bismuth gamma shield after an alurniniumfluoride-aluminium moderator. The detectors are three pulse mode U235-fission chambers for epithermal neutron fluence rate and one current mode ionisation chamber for gamma dose rate. By using different detector sensitivities the beam intensity can be measured over a wide range of reactor power levels (0.001-250 kW). The detector signals are monitored on line with a virtual instrumentation (LabView) based PC-program, which records and displays the actual count rates and total counts of the detectors in the beam. Also reactor in-core power instrumentation and control rod positions can be monitored via another LabView application. The main purpose of the monitoring system is to provide a dosimetric link to the dose in patient during the treatment, as the fission chamber count rates have been calibrated to the induced thermal neutron fluence rate and to the absorbed dose rate at reference conditions in a tissue substitute phantom.",
    author = "Vesa Tanner and Iiro Auterinen and Jori Helin and Antti Kosunen and Sauli Savolainen",
    year = "2000",
    language = "English",
    isbn = "951-38-5273-3",
    series = "VTT Symposium",
    publisher = "VTT Technical Research Centre of Finland",
    number = "197",
    pages = "181--189",
    booktitle = "15th European TRIGA Conference",
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    }

    Tanner, V, Auterinen, I, Helin, J, Kosunen, A & Savolainen, S 2000, On line neutron beam monitoring of the finnish BNCT facility. in 15th European TRIGA Conference. VTT Technical Research Centre of Finland, Espoo, VTT Symposium, no. 197, pp. 181-189, 15th European TRIGA Conference, Espoo, Finland, 15/06/98.

    On line neutron beam monitoring of the finnish BNCT facility. / Tanner, Vesa; Auterinen, Iiro; Helin, Jori; Kosunen, Antti; Savolainen, Sauli.

    15th European TRIGA Conference. Espoo : VTT Technical Research Centre of Finland, 2000. p. 181-189 (VTT Symposium; No. 197).

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    TY - GEN

    T1 - On line neutron beam monitoring of the finnish BNCT facility

    AU - Tanner, Vesa

    AU - Auterinen, Iiro

    AU - Helin, Jori

    AU - Kosunen, Antti

    AU - Savolainen, Sauli

    PY - 2000

    Y1 - 2000

    N2 - A Boron Neutron Capture Therapy (BNCT) facility has been built at the FiR 1 research reactor of VTT Chemical Technology in Espoo, Finland. The facility is currently undergoing dosimetry characterisation and neutron beam operation research for clinical trials. The healthy tissue tolerance study, which was carried out in the new facility during spring 1998, demonstrated the reliability and user-friendliness of the new on line beam monitoring system designed and constructed for BNCT by VTT Chemical Technology. The epithermal neutron beam is monitored at a bismuth gamma shield after an alurniniumfluoride-aluminium moderator. The detectors are three pulse mode U235-fission chambers for epithermal neutron fluence rate and one current mode ionisation chamber for gamma dose rate. By using different detector sensitivities the beam intensity can be measured over a wide range of reactor power levels (0.001-250 kW). The detector signals are monitored on line with a virtual instrumentation (LabView) based PC-program, which records and displays the actual count rates and total counts of the detectors in the beam. Also reactor in-core power instrumentation and control rod positions can be monitored via another LabView application. The main purpose of the monitoring system is to provide a dosimetric link to the dose in patient during the treatment, as the fission chamber count rates have been calibrated to the induced thermal neutron fluence rate and to the absorbed dose rate at reference conditions in a tissue substitute phantom.

    AB - A Boron Neutron Capture Therapy (BNCT) facility has been built at the FiR 1 research reactor of VTT Chemical Technology in Espoo, Finland. The facility is currently undergoing dosimetry characterisation and neutron beam operation research for clinical trials. The healthy tissue tolerance study, which was carried out in the new facility during spring 1998, demonstrated the reliability and user-friendliness of the new on line beam monitoring system designed and constructed for BNCT by VTT Chemical Technology. The epithermal neutron beam is monitored at a bismuth gamma shield after an alurniniumfluoride-aluminium moderator. The detectors are three pulse mode U235-fission chambers for epithermal neutron fluence rate and one current mode ionisation chamber for gamma dose rate. By using different detector sensitivities the beam intensity can be measured over a wide range of reactor power levels (0.001-250 kW). The detector signals are monitored on line with a virtual instrumentation (LabView) based PC-program, which records and displays the actual count rates and total counts of the detectors in the beam. Also reactor in-core power instrumentation and control rod positions can be monitored via another LabView application. The main purpose of the monitoring system is to provide a dosimetric link to the dose in patient during the treatment, as the fission chamber count rates have been calibrated to the induced thermal neutron fluence rate and to the absorbed dose rate at reference conditions in a tissue substitute phantom.

    M3 - Conference article in proceedings

    SN - 951-38-5273-3

    T3 - VTT Symposium

    SP - 181

    EP - 189

    BT - 15th European TRIGA Conference

    PB - VTT Technical Research Centre of Finland

    CY - Espoo

    ER -

    Tanner V, Auterinen I, Helin J, Kosunen A, Savolainen S. On line neutron beam monitoring of the finnish BNCT facility. In 15th European TRIGA Conference. Espoo: VTT Technical Research Centre of Finland. 2000. p. 181-189. (VTT Symposium; No. 197).