TY - CHAP A1 - Döhring, Thorsten A1 - Stanik, Eva A1 - Pregler, Jan A1 - Stollenwerk, Manfred A1 - Hildenbrand, Georg T1 - Forschung zu Strahlenschäden mit dem Stratosphärenballon-Experiment ASTRABAX T2 - DGaO-Proceedings N2 - Das Stratosphärenballon-Experiment ASTRABAX ist als multimodale Plattform der Material- und Biowissenschaften für Untersuchungen bei extremen Strahlenbelastungen konzipiert, mit Fokus auf dem UV-C-Spektralbereich und der kosmischen Höhenstrahlung. Auswirkungen von Kombinationen aus hoch- und niederenergetischer Strahlung sind relevant, jedoch nicht ausreichend erforscht. KW - Stratosphärenballon KW - Dosimetrie KW - UV-Spektroskopie KW - kosmische Strahlung KW - Strahlenschäden KW - Stratosphären-Ballon KW - Strahlenbelastung Y1 - 2024 UR - https://www.dgao-proceedings.de/download/125/125_p21.pdf VL - 2024 IS - 125 SP - 1 EP - 2 ER - TY - JOUR A1 - Amorim, Isilda A1 - Spera, Natalia C.M. A1 - Nicoara, Nicoleta A1 - Ramasamy, Devaraj A1 - Alves, Diana F. A1 - Stollenwerk, Manfred A1 - Stadtmüller, Johannes A1 - Döhring, Thorsten A1 - Sadewasser, Sascha A1 - Kolen'ko, Yury V. A1 - Sousa, Juliana P.S. T1 - Overall alkaline water electrolysis over active, stable, low loading iridium catalysts sputtered on nickel foam JF - International Journal of Hydrogen Energy KW - Iridium KW - Katalysator KW - Wasserstoffelektrolyse KW - Wasser KW - Elektrolyse KW - Wasserstofferzeugung Y1 - 2024 U6 - https://doi.org/10.1016/j.ijhydene.2024.10.306 SN - 0360-3199 VL - 92 SP - 852 EP - 864 PB - Elsevier BV ER - TY - GEN A1 - Stanik, Eva A1 - Döhring, Thorsten A1 - Zeising, Sebastian A1 - Meißner, Martin T1 - An astronomy event at Aschaffenburg University to attract future engineering students T2 - 18th INTEGRAL/BART Workshop N2 - In 2023 the German Federal Ministry of Education and Research (BMBF) and the German organization for science communication “Wissenschaft im Dialog” (German for: Science in dialogue) jointly proclaimed a "Science Year" with the motto “Our Universe”. One of the numerous events that have been supported thereby has been that of the project "Zirkus UNI-versum" (in English: "Circus UNI-verse"), which took place in summer 2023 at Aschaffenburg University of Applied Sciences. Two school classes from the local high school “Kronberg-Gymnasium” first experienced an interactive astronomy lecture including a planetarium star show in a tent. Another highlight was the rocket car race in front of the cafeteria and the exclusive launch of a water rocket on the campus green. After the collective countdown, it reached a height of around eighty meters and thus rose higher than all the trees and buildings on the campus site. For their own exploration of the night sky the pupils obtained small cardboard star maps to assemble themselves as a homework. On the summer evenings of the following school holidays, they certainly observed the sky with a different point of view and, above all, with expert knowledge. The event has given them interesting impressions of Aschaffenburg Technical University as an attractive local education facility. The project "Zirkus UNI-versum" – and other activities for schools – intend to stimulate the interest of pupils in STEM subjects and to attract future engineering students. N2 - Poster KW - astronomy event KW - MINT KW - engineering students KW - STEM KW - Astronomie KW - Vorlesung Y1 - 2024 VL - 2024 SP - 1 EP - 1 ER - TY - JOUR A1 - Döhring, Thorsten A1 - Stanik, Eva A1 - Zeising, Sebastian A1 - Meissner, Martin T1 - Astronomy events at Aschaffenburg University to attract future students JF - Acta Polytecnica N2 - In 2023, the German Federal Ministry of Education and Research and the German organisation for science communication “Wissenschaft im Dialog” jointly proclaimed a “Science Year 2023” in Germany with the motto “Our Universe”. One of the numerous events that have been supported has been that of the project “Zirkus UNI-versum”, which took place in summer 2023 at Aschaffenburg University of Applied Sciences. This project, and other activities for schools, intend to stimulate the interest of pupils in STEM subjects and to attract future engineering students. KW - astronomy KW - education KW - STEM KW - planetarium KW - rocket propulsion KW - Astronomie KW - Schüler KW - MINT-Fächer Y1 - 2025 UR - https://dspace.cvut.cz/handle/10467/121689 VL - 2025 IS - 65 (1) SP - 1 EP - 6 ER - TY - CHAP A1 - Stanik, Eva A1 - Döhring, Thorsten A1 - Pregler, Jan A1 - Kätker, Anna A1 - Busch, Uwe A1 - Friedrich, Peter T1 - Ein Besucherexperiment zur astronomischen Röntgenoptik für das Deutsche Röntgen-Museum T2 - DGaO-Proceedings N2 - Im Rahmen eines gemeinsamen Entwicklungsprojekts entsteht ein neues Besucherexperiment zur astronomischen Röntgenoptik, das im Museumslabor RöLab im Deutschen Röntgen-Museum aufgebaut werden soll. Das Ziel des interaktiven Exponats ist es, Begeisterung für die faszinierende Welt der Röntgenastronomie zu wecken und das Berufsbild eines Astronomen zu vermitteln. KW - Röntgenteleskope KW - Lobster-eye KW - Röntgen KW - Grazing Incidence KW - Wolter KW - Deutsches Röntgen-Museum KW - Röntgenastronomie KW - Experiment Y1 - 2024 UR - https://www.dgao-proceedings.de/abstract/abstract_only.php?id=3039 VL - 2024 IS - 125 SP - 1 EP - 2 ER - TY - CHAP A1 - Stanik, Eva A1 - Döhring, Thorsten A1 - Pregler, Jan A1 - Kätker, Anna A1 - Busch, Uwe A1 - Friedrich, Peter T1 - A visitor experiment on astronomical X-ray optics for the "Deutsches Röntgen-Museum" T2 - AXRO 2024 - 15th International Conference on Astronomical X-Ray Optics N2 - The “Deutsches Röntgenmuseum” in Remscheid is the unique institution worldwide that researches and documents the life and work of the first Nobel Prize winner, Wilhelm Conrad Röntgen, and the effects of his discovery of X-rays. As an integral part of the museum, the RöLab laboratory offers visitors the opportunity to gain practical experience in X-rays, optics and technology through own experiments. As part of a joint development project, students from Aschaffenburg University of Applied Sciences are currently designing a visitor experiment on astronomical X-ray optics for the museum laboratory. An optical set-up with visible light illustrate the focusing principle of X-ray telescopes, e.g. for wide-angle optics based on the lobster-eye principle. Display boards explain the optics of various types of telescopes with accompanying text and corresponding illustrations. Modern X-ray observatories such as CHANDRA, XMM-Newton and eROSITA are presented clearly. Once implemented, the new visitor experiment inside the “Deutsches Röntgenmuseum” intend to inspire young researchers for the fascinating world of X-ray optics and X-ray astronomy. KW - X-ray astronomy KW - X-ray optics KW - X-ray telescope KW - Deutsches Röntgen-Museum KW - Deutsches Röntgen-Museum KW - Röntgen, Wilhelm Conrad, 1845-1923 KW - Röntgenstrahlung Y1 - 2024 VL - 2024 SP - 1 EP - 1 ER - TY - CHAP A1 - Döhring, Thorsten A1 - Stanik, Eva A1 - Pregler, Jan A1 - Kätker, Anna A1 - Busch, Uwe A1 - Friedrich, Peter T1 - Konzeption eines Astronomie-Besucherexperiments für das Deutsche Röntgen Museum T2 - Bayerischer Tag für gute Lehre N2 - Das Deutsche Röntgen Museum in Remscheid ist eine weltweit einzigartige Institution, die das Leben und Werk des ersten Physik Nobelpreisträgers Wilhelm Conrad Röntgen und die Auswirkungen seiner Entdeckung der Röntgenstrahlung erforscht und dokumentiert Als integraler Bestandteil des Museums bietet das Museumslabor RöLab die Möglichkeit, durch eigene Experimente praktische Erfahrungen zu verschiedenen Themen rund um Röntgenstrahlung, Optik und Technik zu sammeln Im Rahmen eines gemeinsamen Entwicklungsprojekts konzipieren Studierende der TH Aschaffenburg derzeit ein Besucherexperiment zur astronomischen Röntgenoptik für das Museumslabor Das neue Besucherexperiment soll nach seiner Realisierung junge Forscherinnen und Forscher für die faszinierende Welt der Röntgenoptik und der Röntgenastronomie begeistern. KW - Exponat KW - Röntgen KW - Astronomie KW - Museum KW - Deutsches Röntgen-Museum KW - Experiment KW - Röntgenoptik KW - Röntgenastronomie Y1 - 2025 UR - https://www.uni-wuerzburg.de/lehre/aktuelles/tag-fuer-gute-lehre-2025/ VL - 2025 SP - 1 EP - 1 PB - Universität Würzburg ER - TY - CHAP A1 - Döhring, Thorsten A1 - Krieger, Jochen A1 - Stanik, Eva T1 - Praxisschock im Studium - die Erstellung komplexer Angebote für Satellitenkomponenten T2 - Bayerischer Tag für gute Lehre N2 - Die Lehrveranstaltung „Projektstudie" im Rahmen des Studiengangs “Internationales Technisches Vertriebsmanagement“ verbindet Elemente der Ingenieurwissenschaften und der Betriebswirtschaftslehre mit einem realistischen Vertriebsprojekt, hier der Erstellung eines komplexen Angebotes für Satellitenkomponenten. Begleitend zu der Teamarbeit am praktischen Vertriebsprojekt werden Lehrsequenzen theoretischer Natur durchgeführt, die dem nachhaltigen Verständnis dienen und auf die Schwerpunktthemen vorbereiten. Die hohe Qualität der erstellten Angebotsunterlagen zeigt, dass die angestrebten Lernziele erreicht wurden. Der Praxisschock einer komplexen Angebotserstellung erfolgt für die Studierenden somit bereits im Studium unter Anleitung eines auf diesem Gebiet berufserfahrenen Professors und nicht erst während der Probezeit in einer ersten Vertriebsposition. KW - Satellitentechnik KW - Vertrieb KW - Projektmanagement KW - Investitionsgütermarketing KW - Satellitentechnik Y1 - 2025 UR - https://www.uni-wuerzburg.de/lehre/aktuelles/tag-fuer-gute-lehre-2025/ VL - 2025 SP - 1 EP - 1 PB - Universität Würzburg ER - TY - CHAP A1 - Stanik, Eva A1 - Döhring, Thorsten A1 - Krivanekova, Lucia A1 - Meißner, Martin T1 - „Zirkus UNI-versum” - ein Astronomie-Event für Schulklassen T2 - Bayerischer Tag für gute Lehre N2 - Im “Wissenschaftsjahr 2023 – Unser Universum”, einer gemeinsamen Initiative des Bundesministeriums für Bildung und Forschung (BMBF) und Wissenschaft im Dialog (WiD), wurden zahlreiche Projekte in ganz Deutschland gefördert. Eines dieser Projekte war der “Zirkus UNI-versum”, der an der Technischen Hochschule Aschaffenburg stattfand. Zielgruppe waren Schulklassen von benachbarten Schulen, die eingeladen wurden, bei einem Besuch auf dem Hochschul-Campus spielerisch Wissen über Astronomie und Raumfahrt zu sammeln. Gleichzeitig sollen mit dem Projekt (und anderen „Erlebnis-Bausteinen“ unserer Schulprojekte) die Schülerinnen und Schüler für MINT-Fächer begeistert und zukünftige Studierende für technische Studiengänge gewonnen werden. KW - Astronomie KW - MINT KW - Planetarium KW - Astronomie KW - Raumfahrt KW - Schülerversuch Y1 - 2025 UR - https://www.uni-wuerzburg.de/lehre/aktuelles/tag-fuer-gute-lehre-2025/ VL - 2025 SP - 1 EP - 1 PB - Universität Würzburg ER - TY - CHAP A1 - Wissel, Julian A1 - Freudenmann, Dominic A1 - Perez, Nicolas A1 - Döhring, Thorsten A1 - Stadtmüller, Johannes A1 - Stollenwerk, Manfred T1 - Various highly effective sputtered layer structures as catalysts for H2O2 decomposition for use in satellite engines T2 - MaterialsWeek 2025 – Book of Abstracts N2 - Catalysts are frequently employed in both research and industrial applications to facilitate or accelerate chemical reactions. One such application is in monopropellant thrusters for space propulsion systems, where hydrogen peroxide (H2O2) is used as a liquid propellant. The decomposition of liquid hydrogen peroxide into water and oxygen gas, which ultimately generates thrust, can be achieved using noble metal catalysts from the platinoid group, such as platinum and iridium. This promotes the use of more environmentally friendly and less toxic propellants, such as H2O2, instead of hydrazine and nitrogen tetroxide (NTO). The optimization of coating structures with these catalytic materials is essential for future space applications, as it aims to extend the lifespan of catalyst materials and results in a better utilization of H2O2 in satellite engines. Therefore, different layer structures were deposited onto Duranit D99 pellets using a controlled magnetron sputtering process. Previous studies have shown that the used sputtering pressure has a strong influence on the structure of the deposited coatings [2][3]. Certain parameter combinations produce catalytic layers with rough textures and a highly porous microstructure, see figure 1 [1]. To improve the thermal and mechanical stability of the sputtered layers, thin adhesive layers of Titanium and Zirconium were applied beneath the catalytic layer. The pellets were then heated in an oven at 640°C for one minute to simulate the thermal effects experienced in a satellite engine during ignition. Following this, the catalytic performance of the pellets was tested in laboratory experiments using 30% H2O2. Pellets with sputtered platinum as the catalytic coating delivered the best results. These coatings will be further evaluated in an engine test conducted at the German Aerospace Centre (DLR). Hydrogen peroxide is also expected to play a crucial role in future lunar and Martian colonization efforts. In this context, catalytic coatings would be used to decompose H2O2 to supply astronauts with water and oxygen, rather than to generate thrust in satellite engines. KW - catalyst KW - satellite propulsion KW - sputtered layers KW - iridium KW - platinum KW - Satellitentechnik KW - Katalysator Y1 - 2025 SN - 978-3-88355-446-4 SP - 53 EP - 53 PB - Deutsche Gesellschaft für Materialkunde e.V. (DGM) CY - Sankt Augustin ER - TY - CHAP A1 - Khropost, Diana A1 - Riethmüller, Franziska A1 - Stanik, Eva A1 - Döhring, Thorsten A1 - Hertwig, Andreas A1 - Huelague, Deniz T1 - Polydopamine – a bionic material and its potential applications for batteries T2 - MaterialsWeek 2025 – Book of Abstracts N2 - Polydopamine (PDA) recently came into focus as an innovative material for applications in various technical fields, especially in the energy field it is considered for batteries as well as for supercapacitors. It is a very strong glue that sticks on almost everything, even under water: In nature, PDA is found in the byssal thread cuticles of mussels. The wet-resistant adhesion ability of PDA can be used in the treatment of separator membranes in batteries, but furthermore PDA is also considered as an electrode material for batteries. We have investigated thin layers of poly-dopamine with different methods including ellipsometry, tactile measurements of the layer thickness and in situ absorption measurements during the polymerization process. KW - polydopamine KW - PDA KW - bionic material KW - adhesion KW - absorption KW - Iridium KW - Katalysator KW - Wasserstoffenergietechnik Y1 - 2025 SN - 978-3-88355-446-4 SP - 67 EP - 67 PB - Deutsche Gesellschaft für Materialkunde e.V. (DGM) CY - Sankt Augustin ER - TY - GEN A1 - Licciardello, Nadia A1 - Döhring, Thorsten A1 - Stollenwerk, Manfred A1 - Kolen'ko, Yury V. A1 - Petrovykh, Dmitri Y. T1 - Innovative nanocomposite coatings for radiation shielding on satellites T2 - EuroNanoForum N2 - The current trend in development of low-cost satellites is based on small dimensions combined with advanced electronics. Traditionally, radiation-sensitive electronics on satellites are protected by tungsten or lead foils, which are high-density materials and contribute significantly to the overall mass of the satellite. Here, we design and investigate temperature-gradient-resistant lightweight silane-based composites containing micro- or nano-particles of W or WO3, taking inspiration from similar approaches in the medical field. While the polymeric matrix provides flexibility under thermal gradients (such as those occurring in satellites during their orbits) and low density, the particles enable shielding from soft X-rays and other radiation. For reference, thin tungsten films were deposited by magnetron sputtering. The properties of the two kinds of coatings were compared and the X-ray protective properties were investigated using both a custom-designed measurement setup and conventional X-ray absorption. The best performing radiation-protective coatings will be launched in a payload experiment on the INFANTE satellite. N2 - Poster KW - satellite KW - polymeric matrix KW - nanocomposite KW - radiation protection KW - Satellitentechnik KW - Strahlung Y1 - 2021 UR - https://euronanoforum2021.eu/ VL - 2021 ER - TY - CHAP A1 - Rivolta, Giacomo A1 - Basso, Stefano A1 - Civitani, Marta Maria A1 - Cotroneo, Vincenzo A1 - Döhring, Thorsten A1 - Michler, Willy-Leopold A1 - Pareschi, Giovanni A1 - Spiga, Daniele A1 - Stollenwerk, Manfred T1 - Upgrade of a laboratory X-ray diffractometer to extend its operating range towards soft energies T2 - Proceedings of SPIE N2 - The optical properties of X-ray mirror samples are commonly measured using diffractometers based on laboratory sources; like the Bede D1 diffractometer operating at INAF-OAB. This instrument can generate a collimated X-ray beam up to 60 keV, even though the most interesting energy region for x-ray astronomy applications is usually below 10 keV. In the softest part of this range (below 6 keV), high X-ray absorption in air hinders a full and precise characterization of optical components. In this work, we present an upgrade of the Bede D1 diffractometer that extends the operative range of the instrument below 6 keV; this is done by maximizing the flux at lowest energies and by reducing absorption by means of a helium-rich atmosphere. The upgraded instrument will be used for the tests of X-ray mirrors with innovative soft X-ray coatings, with potential application to the next generation X-ray telescopes (such as ATHENA and eXTP). KW - X-ray KW - mirror KW - reflectivity KW - refractometer KW - ATHENA KW - Röntgenspiegel KW - Diffraktometer Y1 - 2022 UR - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12181/121814S/Upgrade-of-a-laboratory-x-ray-diffractometer-to-extend-its/10.1117/12.2629940.short U6 - https://doi.org/doi: 10.1117/12.2629940 SN - 0277-786X VL - 2022 IS - 12181 SP - 121814S-1 EP - 121814s-7 PB - SPIE ER - TY - CHAP A1 - Cotroneo, Vincenzo A1 - Bruni, Ricardo A1 - Civitani, Marta Maria A1 - Döhring, Thorsten A1 - Gibertini, Eugenio A1 - Magagnin, Luca A1 - Pareschi, Giovanni A1 - Rivolta, Giacomo A1 - Romaine, Suzanne A1 - Sethares, Leandra A1 - Sironi, Giorgia A1 - Tagliaferri, Gianpiero A1 - Valsecchi, Giuseppe T1 - Dopamine dip-liquid overcoatings for soft X-ray reflectivity enhancement T2 - Proceedings of SPIE N2 - It has been known for some time that sputtered low-density coatings deposited under vacuum (e.g. carbon or B4C), applied on top of high-density metallic coatings, can enhance the reflectivity in the soft x-ray band (below ~5 keV). In the last years, we experimented with novel carbonated coatings obtained by dip-liquid deposition, in which a thin film is formed on the surface of a mirror by immersion in a suitable precursor solution. After several attempts with different chemical compounds, we found an optimal candidate both for the reflectivity performance and for the convenience of the deposition process, which is much simpler and inexpensive compared to conventional processes. In particular, such coatings can enhance the soft x-ray response at the reflection angles employed in future telescopes, like ATHENA (ESA), Lynx (NASA) and eXTP (CAS). In this paper we consider the application of dip-liquid overcoatings on conventional coatings (Au, Ir) or in combination with recently proposed chromium overcoatings and their possible uses to enhance the reflectivity of x-ray mirrors at low, medium or higher energies, presenting the first experimental results of x-ray tests on these coatings. KW - astronomical telescopes KW - soft x-ray KW - reflectivity enhancement KW - dopamine overcoatings KW - Röntgenspiegel KW - Röntgenteleskop Y1 - 2022 UR - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12181/2630212/Dopamine-dip-liquid-overcoatings-for-soft-x-ray-reflectivity-enhancement/10.1117/12.2630212.short U6 - https://doi.org/10.1117/12.2630212 VL - 2022 IS - 12181 SP - 1218117 EP - 1218117 ER - TY - CHAP A1 - Rivolta, Giacomo A1 - Bruni, Ricardo A1 - Civitani, Marta Maria A1 - Cotroneo, Vincenzo A1 - Döhring, Thorsten A1 - Gibertini, Eugenio A1 - Magagnin, Luca A1 - Pareschi, Giovanni A1 - Romaine, Suzanne A1 - Sethares, Leandra A1 - Sironi, Giorgia A1 - Tagliaferri, Gianpiero A1 - Valsecchi, Giuseppe T1 - Development in carbon-based coatings for X-ray astronomy T2 - IWXM 2022, 7th International Workshop on Metrology for X-ray Optics, Mirror Design and Fabrication, Berlin, 5th - 8th April 2022 KW - x-ray astronomy KW - carbon-based coatings KW - x-ray telescopes KW - Röntgenastronomie KW - Röntgenteleskop Y1 - 2022 ER - TY - JOUR A1 - Wissel, Julian A1 - Freudenmann, Dominic A1 - Cichocka, Magdalena Ola A1 - Pöhl, Almut A1 - Stephan-Hofmann, Iris A1 - Röcke, Nicole A1 - Pérez, Nicolás A1 - Döhring, Thorsten A1 - Stadtmüller, Johannes A1 - Stollenwerk, Manfred T1 - Microstructure of highly effective platinum–iridium alloys as catalysts for hydrogen peroxide decomposition JF - Research on Chemical Intermediates KW - Iridium KW - Katalysator KW - Raumfahrttechnik KW - Antrieb, Technik KW - Wasserstoffperoxyd Y1 - 2024 U6 - https://doi.org/10.1007/s11164-024-05412-4 SN - 0922-6168 VL - 50 IS - 11 SP - 5385 EP - 5397 PB - Springer Science and Business Media LLC ER - TY - CHAP A1 - Stanik, Eva A1 - Stollenwerk, Manfred A1 - Hübner, Sophie A1 - Stadtmüller, Johannes A1 - Döhring, Thorsten T1 - Experimental studies on iridium catalysts for water PEM electrolysis T2 - MaterialsWeek 2025 – Book of Abstracts N2 - The enhanced use of sustainable energy sources entails strong fluctuations in the availability of electric power. As we need new approaches for energy distribution and energy storage systems, hydrogen is often discussed as a promising energy carrier. PEM electrolysis can be used to transform electrical energy from renewable sources into hydrogen. One challenge in this context is the need for catalysts, as these contribute significantly to the performance of the electrolysis cell. The commonly used platinum group metal (PGM) catalysts like Iridium are quite scarce and therefore expensive. A possible approach to reduce the Ir content is the application of magnetron sputtering for catalyst generation. By selecting the right process parameters, the desired layer properties can be set very precisely during sputtering. This ensures a large surface area with reduced material usage. The introduction of carbon can increase the surface area of the catalyst further and enhance its effectiveness. First results of investigations on the catalytic effect of sputtered Ir catalyst layers will be presented. KW - catalyst KW - iridium KW - PEM electrolysis KW - hydrogen KW - magnetron sputtering KW - Iridium KW - Katalysator KW - Wasserstoffenergietechnik Y1 - 2025 SN - 978-3-88355-446-4 SP - 62 EP - 62 PB - Deutsche Gesellschaft für Materialkunde e.V. (DGM) CY - Sankt Augustin ER - TY - CHAP A1 - Döhring, Thorsten A1 - Krivanekova, Lucia A1 - Pregler, Jan A1 - Hildenbrand, Georg ED - Hudec, René ED - Pina, Ladislav T1 - Radiation measurements in the stratosphere by the balloon experiment ASTRABAX T2 - EUV and X-ray Optics: Synergy between Laboratory and Space IX N2 - Stratospheric balloons are a platform of choice for meteorology, climate and atmospheric research, offering some advantages over sounding rockets and satellites. The Aschaffenburg Stratospheric Balloon Experiment (ASTRABAX) carries out experiments on material treatments and life sciences under the extreme radiation exposures at high altitude. The pioneer ASTRABAX flight took place mid of October 2024 in Germany. Measurements examined the UV spectral region by a miniature spectrometer and captured secondary cosmic rays employing a Geiger counter. Additional experiments assessed irradiation effects on polydopamine X-ray mirror coatings. The platform also carried samples of biological cells to evaluate effects of exposure to low-dose irradiation of high-energy particles, gamma rays and UV radiation simultaneously. Biological experiments under such realistic conditions are relevant for genetic research on Earth, for human space flights as well as for the understanding of astrobiological processes. KW - stratosphere KW - radiation exposure KW - gamma ray KW - cosmic rays KW - ultraviolet KW - balloon KW - Stratosphären-Ballon Y1 - 2025 U6 - https://doi.org/10.1117/12.3056175 VL - 2025 IS - 13531 SP - 1353109-1 EP - 1353109-11 PB - SPIE ER - TY - CHAP A1 - Stanik, Eva A1 - Pregler, Jan A1 - Döhring, Thorsten A1 - Kätker, Anna A1 - Busch, Uwe A1 - Friedrich, Peter ED - Hudec, René ED - Pina, Ladislav T1 - A visitor experiment on astronomical x-ray optics for the “Deutsches Röntgenmuseum” T2 - EUV and X-ray Optics: Synergy between Laboratory and Space IX N2 - The “Deutsches Röntgen-Museum” in Remscheid (Germany) is the unique institution worldwide that researches and documents the life and work of the first Nobel Prize winner in physics, Wilhelm Conrad Röntgen, and the effects of his discovery of X-rays. As an integral part of the museum, the RöLab laboratory offers visitors the opportunity to gain practical experience in X-rays, optics and technology through own experiments. As part of a joint development project, students from Aschaffenburg University of Applied Sciences are currently designing a visitor experiment on astronomical X-ray optics for the museum´s Röntgen laboratory. An optical set-up with visible light illustrates the focusing principle of X-ray telescopes, e. g. for wide-angle optics based on the lobster-eye principle. Display boards explain the optics of various types of telescopes with accompanying text and corresponding illustrations. Modern X-ray observatories such as CHANDRA, XMM-Newton and eROSITA are presented clearly. Once implemented, the new visitor experiment inside the “Deutsches Röntgen-Museum” aims to inspire young researchers with enthusiasm for the fascinating world of X-ray optics and X-ray astronomy. KW - X-ray KW - astronomy KW - STEM KW - museum KW - Röntgen KW - Deutsches Röntgen-Museum KW - Röntgenoptik Y1 - 2025 U6 - https://doi.org/10.1117/12.3056291 VL - 2025 IS - 13531 SP - 135310M-1 EP - 135310M-7 PB - SPIE ER - TY - CHAP A1 - Hudec, Rene A1 - Stieglitz, Veronika A1 - Döhring, Thorsten A1 - Friedrich, Peter A1 - Burwitz, Vadim T1 - Novel X-ray optics developed within the AHEAD2020 project N2 - We present a summary of our contribution to the EU Horizon 2020 project AHEAD2020, with emphasis on the X-ray optics work package. The Czech Technical University – together with other collaborating institutes - studied innovative Lobster Eye (LE) and Kirkpatrick-Baez (KB) X-ray modules, based on the Multi Foil Optics technology (MFO). In addition, two major events were organized, namely a students workshop in December 2023 and a summer school in May 2024. The KB optics represents a promising and cost effective alternative to the currently used Wolter I telescopes. The LE X-ray optics, based on the Schmidt design, has a wide field of view (FOV) with a short focal length, making it suitable for CubeSat application. Thereby the 2D LE optics consist of two orthogonal sub-modules of flat smooth reflecting foils, each sub-modules focuses in one direction. The advantage of such optics is that it preserves the angular resolution throughout the FOV even for off-axis points, as demonstrated by simulations and measurements. There was a collaboration with Aschaffenburg University in design, development, and testing of the double LE module HORUS, comparing different reflecting coatings. KW - Horizon2020 KW - astronomy KW - telescope KW - X-ray KW - Röntgenoptik KW - Beschichtung Y1 - 2025 UR - https://www.dgao-proceedings.de/abstract/abstract_only.php?id=3236 SP - 1 EP - 1 PB - DGaO ER -