Gießen 2024 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 72: Poster
HK 72.9: Poster
Donnerstag, 14. März 2024, 17:15–18:45, HBR 14: Foyer
Characterization of Graphenic Carbon (GC) foils for heavy ion accelerator applications — •Konstantina Botsiou1,3, Timo Dickel1,2, Joachim Enders1,3, Emma Haettner1, Sivaji Purushothaman1, Christoph Scheidenberger1,2, and Marilena Tomut1,4 — 1GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany — 2Justus-Liebig-Universität, Gießen, Germany — 3Institute for Nuclear Physics, Technische Universität Darmstadt, Darmstadt, Germany — 4Institut for Materialphysik, University of Münster, Münster, Germany
Vacuum windows, essential in high-intensity electron accelerators, separate different vacuum areas or the beam vacuum from the atmosphere. GC, with its low atomic number and excellent thermo-mechanical properties, is ideal for such windows and stripper foils in ion beams. The general goal is to balance different material properties: windows and strippers need to withstand a high thermal load and intense radiation damage. A low material budget is desirable (to minimize energy losses and longituninal and transverse emittance growth) and long lifetimes are required. In addition, accurate knowledge of the area density of the GC material is essential for its application. Ketek GmbH, Munich, has developed GC windows with diameter of 7.5 mm and thickness of 1 µm, which can withstand 2 bar of pressure. These windows used as vacuum windows for X-ray detectors and tested for heavy ion applications. We use GC foils as test material for heavy ion applications. Using high-resolution alpha spectroscopy and theorical models we estimate the area density.
Keywords: Graphenic Carbon; Energy loss; Areal density