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T: Fachverband Teilchenphysik

T 74: Gammaastronomie III

T 74.5: Vortrag

Mittwoch, 5. März 2008, 17:45–18:00, KGII-HS 2006

High-reflective dielectric foil development with the low UV-cutoff for the light concentrators of the MAGIC-II telescope camera. — •Maxim Shayduk¹, Eckart Lorenz², and Thomas Schweizer² for the MAGIC collaboration — ¹Humboldt-Universitaet, Berlin — ²Max Planck Institute, Muenchen

The light collectors such as Winston Cones are widely used in ground-based gamma-ray astronomy. The highest possible light collection efficiency and low UV-cutoff of the reflective surface are required for the collection of the Cherenkov light. The usage of dielectric materials allows one to reduce absorption and reach almost 100% reflectivity.

Here we will report about a high-reflective multilayer dielectric foil development with the low UV-cutoff. Developments were done in the collaboration with Fraunhofer-Institut fuer Elektronenstrahl-und Plasmatechnik, Dresden.