Regensburg 2019 – wissenschaftliches Programm
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ST: Fachverband Strahlen- und Medizinphysik
ST 5: Dosimetry and MRI
ST 5.4: Vortrag
Mittwoch, 3. April 2019, 10:15–10:30, Kunsthalle
Development of a UAV based spectro-dosimetric system — •Maksym Luchkov, Patrick Kessler, Stefan Neumaier, and Annette Röttger — Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany
In the framework of the EMPIR project 16ENV04 "Preparedness", PTB is developing a spectrometer based dosimetric system that can be operated while attached to an unmanned aerial vehicle (UAV). This is important for a radiological emergency situation where UAV can cover a large area much faster than a ground squad, therefore minimizing the workers’ exposition to ionizing radiation.
The dosimetric system consists of a CeBr3 scintillation detector which records spectra every two seconds into a database and converts them to dose rate information. The system also measures global position, height above ground and can send this information to a ground base where additional data treatment is possible.
The paper presents the results from a ground measurement campaign on PTB’s premises, where an uncollimated free field irradiation facility was operated. The artificial dose rate increase at the reference point was ranging from 60 to 400 nSv/h. The standard deviations of the measured dose rates in 2 s intervals are in the order of 10-30 % and the results agree well with the reference values.
The remarkable performance of the dosimetric system demonstrates the ability of metrologically accurate two-second long dose rate measurements with the well-characterized spectro-dosemeter.