Ultrathin EUV Filters Testing and Characterization under High Flux (13 SC) for Solar Orbiter EUI Instrument

Paper number

IAC-11,C2,8,2,x10988

Author

Mr. Lionel JACQUES, CSL, Université de Liège, Belgium

Coauthor

Mr. Jean-Philippe HALAIN, CSL, Université de Liège, Belgium

Coauthor

Mrs. Laurence ROSSI, Centre Spatial de Liège, Belgium

Coauthor

Mr. Tanguy THIBERT, Centre Spatial de Liège, Belgium

Coauthor

Mrs. Marie-Laure Hellin, Belgium

Coauthor

Mr. Pierre JAMOTTON, Belgium

Coauthor

Mr. Emmanuel MAZY, Centre Spatial de Liège, Belgium

Coauthor

Mr. Etienne Renotte, Centre Spatial de Liège, Belgium

Coauthor

Dr. Karl Fleury-Frenette, CSL, Université de Liège, Belgium

Coauthor

Prof. Pierre Rochus, CSL, Université de Liège, Belgium

Year

2011

Abstract

The test and characterization of ultrathin EUV filters under high solar flux is presented. These 150nm thick aluminium filters are used at the entrance of the Extreme UV Imager (EUI) payload, which is developed at the Centre Spatial de Liège for the Solar Orbiter ESA M-class mission. The solar flux that they shall have to withstand will be as high as 13 solar constants when the spacecraft is its 0.28AU perihelion. A specific design based on additional ribs has therefore been developed to enhance the thermal behaviour and heat evacuation while preserving its optical properties. 

It is essential to assess the design performances under the Solar Orbiter high solar flux. Therefore, thermal vacuum test under 13 solar constants will be performed. The filters temperature profiles will be measured during the tests through infrared imaging. A thermal correlation of the test will then be performed to deduce the filters actual thermal properties to be used in the global instrument geometrical and thermal mathematical models.

Abstract document

IAC-11,C2,8,2,x10988.brief.pdf

Manuscript document

IAC-11,C2,8,2,x10988.pdf (🔒 authorized access only).

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