Publication date: 
2017/03/22
Despite the adverse weather conditions on Saturday, 18 March, the Fík 2 stratospheric balloon was successfully launched at the Dlouha Lhota airport Příbram, carrying a new dosimetry system for research of cosmic radiation in the upper atmosphere in its gondola. The mechanical components of the new dosimeter were printed on a 3D printer developed by the Department of Radiation Dosimetry Institute of Nuclear Physics at the Academy of Sciences of the Czech Republic. Students from the Faculty of Nuclear Sciences and Physical Engineering and the Faculty of Electrical Engineering were also involved in its development, led by the department staff. They worked on programming of the measuring device, the detector response to neutron field modeling, modelling of the balloon suspension filled with helium, practiced searching for the system in the field and also on the technical background of the project.

One of the aims of the experiment was to find a dosimeter on the ground and read out it measured value. Due to strong winds, the gondola crashed the ground, resulting in breakage of the electronic cosmic rays detector. But measurements with thermoluminescent dosimeters were conducted. Also an important part of the experiment was accomplished - finding the detector after impact. Detector landed in Moravia between Moravské Budějovice and Znojmo near the village of Střelice and tracing it was possible thanks to three independent transmitters of the balloon system.

The aim of the CTU research is primarily validation of computational models of propagation of cosmic rays in the atmosphere, testing technology for measuring radiation, positioning and communication in the stratosphere at a great distance.

Video from balloon launch is available here. Czech Television and Novinky.cz also informed about the event.

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