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

NameVTT Symposium
PublisherVTT
Number197
ISSN (Print)0357-9387
ISSN (Electronic)1455-0873

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",
address = "Finland",

}

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).