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Overview of the BNCT neutron beam line facility in NRI Rez (Prague) Most pictures taken from presentation of J.Burian/NRI – Milano09 1 NRI = Nuclear research.

Published byCharleen Ross Modified over 8 years ago

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Presentation on theme: "Overview of the BNCT neutron beam line facility in NRI Rez (Prague) Most pictures taken from presentation of J.Burian/NRI – Milano09 1 NRI = Nuclear research."— Presentation transcript:

1 Overview of the BNCT neutron beam line facility in NRI Rez (Prague) Most pictures taken from presentation of J.Burian/NRI – Milano09 1 NRI = Nuclear research institute plc BNCT = boron neutron capture therapy

2 Research Reactor LVR-15 (10MW)  36% enriched U235  Light water with forced cooling  Access allowed when reactor ON 2

3 Experimental facilities using LVR-15 3

4 Approximate maximum fluxes 4 thermal neutron flux at the end of the horizontal beam tube1x10 9 n/cm 2 s maximum thermal neutron flux in the core1.5x10 14 n/cm 2 s maximum fast neutron flux in the core3x10 14 n/cm 2 s thermal neutron flux in irradiation channel in fuel 1.2x10 14 n/cm 2 s thermal neutron flux in irradiation channel in reflector 9x10 13 n/cm 2 s Material tests possible in the vertical irradiation channels Dedicated analysis labs available in NRI 2 Ge spectrometers and a portable one operated by NRI

5 BNCT line with shutter 5 Online epithermal/fast neutron flux monitoring performed with fission chambers (U 235/238 ) inside the collimator

6  Gamma component up to 0.5 Gy/h  Control room dose rate ~ 2 uSv/h  Beam diameter 12cm  Access possible to the irradiation room when reactor is ON (shutter opens ~5mins)  x-y Laser alignment available  Cable feed through 4-5cm only, possibility to pass around the door (2 Fip cables max)  Desk space limited  Non-Czech citizens need special permit  RP control possible outside of normal hours 6

7 BNCT spectrum WITH the Li6 filtering Thermal neutrons 7 We used 4cm polyethylene moderator (thermalization depth) WITHOUT Li 6 filter Spectra to be received next week

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