TY - JOUR
T1 - Microdosimetric measurements in the thermal neutron irradiation facility of LENA reactor
AU - Colautti, Paolo
AU - Moro, Davide
AU - Chiriotti Alvarez, Sabina
AU - Conte, Valeria
AU - Evangelista, Laura
AU - Altieri, Saverio
AU - Bortolussi, Silvia
AU - Protti, Nicoletta
AU - Postuma, Ian
A2 - Vanhavere, Filip
A2 - D'Agostino, Emiliano
N1 - Score = 10
PY - 2014/1/22
Y1 - 2014/1/22
N2 - A twin TEPC with electric-field guard tubes has been constructed to be used to characterize the BNCT field of the irradiation facility of LENA reactor. One of the two mini TEPC was doped with 50 ppm of 10B in order to simulate the BNC events occurring in BNCT. By properly processing the two microdosimetric spectra, the gamma, neutron and BNC spectral components can be derived with good precision (~6%). However, direct measurements of 10B in some doped plastic samples, which were used for contructing the cathod walls, point out the scarce accuracy of the nominal 10B concentration value. The influence of the Boral door, which closes the irradiation channel, has been measured. The gamma dose increases significantly (+ 51%) when the Boral® door is closed. The crypt-cell-regeneration weighting function has been used to measure the quality, namely the RBEµ-value, of the radiation field in different conditions. The measured RBEµ values are only partially consistent with RBE values of other BNCT facilities
AB - A twin TEPC with electric-field guard tubes has been constructed to be used to characterize the BNCT field of the irradiation facility of LENA reactor. One of the two mini TEPC was doped with 50 ppm of 10B in order to simulate the BNC events occurring in BNCT. By properly processing the two microdosimetric spectra, the gamma, neutron and BNC spectral components can be derived with good precision (~6%). However, direct measurements of 10B in some doped plastic samples, which were used for contructing the cathod walls, point out the scarce accuracy of the nominal 10B concentration value. The influence of the Boral door, which closes the irradiation channel, has been measured. The gamma dose increases significantly (+ 51%) when the Boral® door is closed. The crypt-cell-regeneration weighting function has been used to measure the quality, namely the RBEµ-value, of the radiation field in different conditions. The measured RBEµ values are only partially consistent with RBE values of other BNCT facilities
KW - Twin TEPC
KW - microdosimetry
KW - BNCT
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_133238
UR - http://knowledgecentre.sckcen.be/so2/bibref/11263
U2 - 10.1016/j.apradiso.2014.01.005
DO - 10.1016/j.apradiso.2014.01.005
M3 - Article
SN - 0969-8043
VL - 88
SP - 147
EP - 152
JO - Applied Radiation and Isotopes
JF - Applied Radiation and Isotopes
T2 - 15th International Congress on Neutron Capture Therapy
Y2 - 10 September 2012 through 14 September 2012
ER -