Neutron dosemeter for individual monitoring
Wide-range Neutron Pit (WNP) System
Wide-range Neutron Pit (WNP) is our original neutron dosemeter system.
The dosemeter consists of TechnoTrak2 (TT2) detector and WNP holder.
Two kinds of filters, radiator and converter are built into WNP holder, and enable to mesure wide-range energy of neutron, namely fast to thermal neutrons.
High Density Poly Ethylene (HDPE) and Boron Nitride (BN) are used for the radiator and converter, respectively.
In addition, we suggest the efficient etching method and high accuracy microscope reader.
The WNP System was developed based on CTC dosimetry service which meets ISO 21909-1.
Automated separation between etch pit and dust
Conventionally, dusts are distinguished from etch pits by human eyes, entailing human errors. Now, dusts are automatically excluded based on more accurate determination by the application algorithm.
Automatically eliminate the adhered dust
|Detector||TechnoTrak2(TT2) 360 detectors/sheet|
|8.5mmx19mm with ID number|
|Radiator: High Density Poly Ethylene (HDPE)|
|Converter: Boron Nitride (BN)|
|Size: W11.5xD22xH3.5mm(see drawing left)|
|Energy range||Neutron: 0.025 eV to 15 MeV|
|Dose range||Fast neutron: 0.1 mSv to 60 mSv|
Thermal neutron: 0.1 mSv to 8 mSv
|Neutron sensitivity |
|1240 ± 30(1σ) etch-pits/cm2/mSv (with HDPE)|
|Background noise||20 ± 20(1σ) etch-pits/cm2|
|ID||1 alphabet and 4 digits number|
|Viewing field||1.268 mm2 (1.126 mm x 1.126 mm)|
|Auto focus||Contrast mode/Surface detection mode|
|ID reading||Automatic ID recognition unit|
|Readout time||It can measure 100 TT2 detectors within 2 hours successively.|
|Continuous reading||100 detectors|
|Analysis function||PitFit2 can present the distribution chart of pit.|
|Power supply||200-240 V 50/60Hz, Power Consumption 500 VA or less|
|Power consumption||Max. 500 W|
|Dimentions/weight (excluding PC unit)||W884 x D805 x H800 mm, 115 kg|
|Imaging||Multi-layer imaging : Automatical recognition of adhered dusts in the image|