Neutron dosimetry
- Fig. 1 Protype from the front
- Fig. 2 Prototype from the back
- Fig. 3 Circuit board
Development of an electronic neutron personal dosimeter
The dosimeter has three built-in sensors for three different neutron energy ranges. Each sensor consists of a silicon charged particle detector (PIN-diode) covered with a converter. The neutrons interacting with the converter produce charged particles which are detected by the diode.
Energy range:
- Low energy sensor: 23 meV-70 keV
- Intermediate energy sensor: 70 keV-1.5 MeV
- High energy sensor: 1.5 MeV-20 MeV
Technical data:
- Dimensions [mm]: 115 x 60 x 16
- Mass 160 g
- Battery: Li/Ion-accumulator, 3.6 V 900 mAh
- Operation time: 400 h per battery charge
- Displayed doses: 1 µSv – 10 Sv
References:
M. Silari, S. Agosteo, P. Beck, R. Bedogni, E. Cale, M. Caresana, C. Domingo, L. Donadille, N. Dubourg, A. Exposito, G. Fehrenbacher, F. Fernández, M. Ferrarini, A. Fiechtner, A. Fuchs, M.J. García, N. Golnik, F. Gutermuth, S. Khurana, Th. Klages, M. Latocha, V. Mares, S. Mayer, T. Radon, H. Reithmeier, s. Rollet, H. Roos, W. Rühm, S. Sandri, D. Schardt, G. Simmer, F. Spurný, F. Trompier, C. Villa-Grasa, E. Weitzenegger, B. Wiegel, M. Wielunski, F. Wissmann, A. Zechner, M. Zielczynski. Intercomparison of radiation protection devices in a high-energy stray neutron field. Part III:Instrument response. Radiation Measurements 44 (2009), 673-691.
M. Wielunski, W. Wahl, N. EL-Faramawy, W. Rühm, M. Luszik-Bhadra, H. Roos. Intercomparison exercise with MeV neutrons using various electronic personal dosimeter. Radiation Measurements, 43, 1063-1067, 2008.
Wielunski, M., Schütz, R., Fantuzzi, E., Pagnamenta, A., Wahl, W., Palfalvi, J., Zombori, P., Andrasi, A., Stadtmann, H., Schmitzer, Ch. Study of the sensitivity of neutron sensors consisting of a converter plus Si charged-particle detector. Nucl. Instr. Meth. Phys. Res A 517, 240-253, 2004.