Speaker
Description
Balloon-borne Instrument for Spectral Scanning of high-altitude Environments (BISSE) is a lightweight gamma-ray measurement setup that can be placed in standard weather balloons and can be retrieved after the flight [1]. The design allows multiple flights with a relatively small cost. The BISSE setup records automatically spectral information of radiation at different altitudes throughout its flight. The sensor is cadmium zinc telluride (CZT) with crystal dimension of 1 cm cubed. This allows good spectral resolution with relatively small weight. The setup also consists of various sensors which allow various additional measurements during the flight, such as temperature and pressure sensors.
Light-weight Aranda-borne Gamma-ray and Environmental Radiation detector (LAGER) is a modification of the BISSE setup that is developed for underwater measurements. The watertight container we used required to pack the sensors in more compact manner. The main sensor for spectral measurements is also a 1 cm cubed sized CZT crystal. In addition, the same complementary sensors are included to monitor the detector measurement environment during the ascent and when reaching the bottom.
In this contribution we discuss the BISSE and LAGER designs and the latest improvements to both systems. The BISSE setup is also studied as a payload for a rotary-wing UAV which allowed us to make crucial modifications to the system for future flights. The balloon flight and the undersea measurements are also addressed with series of Geant4 simulations.
[1] T. Hildén, M. Kalliokoski, A.-P. Leppänen, J. Paatero, J. Sorri & R. Turpeinen (2025). ”CZT detector based spectrometer for drone and balloon borne measurements”. Journal of Instrumentation, 20(1), C01035.
| Workshop topics | Applications |
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