Greifswald 2024 – scientific programme

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EP: Fachverband Extraterrestrische Physik

EP 6: Postersession

EP 6.5: Poster

Wednesday, February 28, 2024, 16:30–18:30, ELP 6: Foyer

Mechanical Design of the CHerenkov Atmospheric Observation System (CHAOS) — •Jasper Mess, Hannes Ebeling, Ava Pohley, Pierre Bornfleth, Hannah Sophie Grimm, Janna Martens, Justus Mickausch, Clara Pittschellis, Nicolas Rohrbeck, and Tom Ruge — Christian-Albrechts-Universität, Kiel, Germany

The Earth is continuously exposed to high-energy charged particles, so-called Galactic Cosmic Rays (GCRs). When these particles hit the Earth’s atmosphere, they create a cascade of secondary particles. CHAOS (CHerenkov Atmospheric Observation System) is a particle telescope that is developed at the Department of Extraterrestrial Physics at Kiel University by a team of students (CHAOS collaboration) to measure the different particle species of the primary GCRs. It consists of multiple solid-state detectors, a Cherenkov aerogel scintillator and a BGO scintillation calorimeter. It has been accepted to the BEXUS program (Balloon EXperiment for Univerity Students), so it will fly on a stratospheric balloon above the Regener-Pfotzer maximum in fall 2024. Through the nature of this experiment there are a few mechanical challenges that need to be met, like the g-forces after the cutoff from the balloon as well as the impact upon landing. A pressure housing is needed to avoid possible corona discharges due to the use of high voltages. On this poster we want to present how CHAOS faces the challenges through its design. More information on www.bexus.org.

Keywords: Mechanical Design; Balloon; Atmosphere; Cherenkov; Scintillator