The New Facilities for Neutron Radiography at the LVR-15 Reactor

6th European Conference on Neutron Scattering

Soltes, J.^1,2 ; Viererbl, L.^1 ; Vacik, J.^3 ; Tomandl, I.^3 ; Krejci, F.^4 ; Jakubek, J.^4

Research Centre Rez Ltd., Husinec-e 130, e

25068, Czech Republic^1

Faculty of Nuclear Sciences and Physical Engineering, CTU in Prague, Behová 7, Praha 1

115 19, Czech Republic^2

Nuclear Physics Institute, Czech Academy of Sciences, e 130, e

25068, Czech Republic^3

Institute of Experimental and Applied Physics, CTU in Prague, Horská 3a/22, Praha 2

128 00, Czech Republic^4

关键词: Gamma background;    High resolution;    Horizontal channels;    Imaging method;    Neutron detection;    Non destructive testing;    Test operations;    Thermal neutron beams;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/746/1/012041/pdf
DOI  :  10.1088/1742-6596/746/1/012041

来源: IOP

【 摘 要 】

Neutron radiography is an imaging method often used at research reactor sites. Back in 2011 a project was started with the goal to build a neutron radiography facility at the site of the LVR-15 research reactor in Rez, Czech Republic. In the scope of the project two horizontal channels were adapted for the needs of neutron radiography. This comprises the HC1 channel which offers an intense thermal neutron beam with a diameter of 10 cm, which can be used for imaging of larger samples, and the HC3 channel which beam is restricted just to 4x80 mm2, but is highly thermalized, collimated and reduced from gamma background, thus capable of providing better radiograph resolution. Both facilities are equipped with newest Timepix based detectors, with thin6LiF converters for neutron detection capable of delivering high resolution. Both facilities offer a unique opportunity for non-destructive testing in the Czech region. In 2015 both facilities were put into test operation and several radiographs were acquired, which are presented in the following text.