Author/Authors :
Kalliokoski، نويسنده , , M. and Hilden، نويسنده , , T. and Garcia، نويسنده , , F. and Heino، نويسنده , , J. and Lauhakangas، نويسنده , , R. and Tuominen، نويسنده , , E. and Turpeinen، نويسنده , , R.، نويسنده ,
Abstract :
An optical scanning system was commissioned and further developed in the Detector Laboratory of Helsinki Institute of Physics and University of Helsinki. It was designed to automatically scan, perform on-line analysis and to classify the overall quality of GEM-foils especially of the GEM-TPC detectors for Super-FRS at FAIR. The optical scanning system consists of precision positioning table, lighting, optics and operating system with analysis software. It has active scanning area of 95×95 cm2 and it can study this area with the minimum resolution of 128 lp/mm. Performance of the system and first results from the GEM-foil uniformity and quality analysis are presented.
