Evaluation of a CCD Imaging Detector with the Medipix2 Detector J. Touš - Crytur Ltd., Turnov, Czech Republic J.Žemlička, J. Jakůbek – IEAP, Prague, Czech Republic Poster ID 146 Monday PS III CCD Camera with Optics and Scintillator Medipix2 Hamamatsu Flat Panel

Stair-Like Object CNR Medipix2 – highest contrast resolution at low energies YAG (200 microns) – half of that at low energies Flat panel very low contrast at low energies Hamamatsu Flat Panel

Spatial Resolution Edge response profile fitted by an error function YAG (50  m) – best spatial resolution due to small pixel size Medipix2 – very good subpixel resolution CCD: 4050x2630 sq. pixels of 9  m, sensor size 36mm x 24mm Medipix2: 256 x 256 sq. pixels, pitch of 55  m, sensor size 14mm x 14mm Flat panel: 2400 x 2400 sq. pixels of 50  m, sensor size is 120mm x 120mm  = 0.92 pixels  = 1.19 pixels  = 1.94 pixels  = 0.38 pixels  = 1.01pixels

High Resolution X-ray Micro- Radiography Carbon Fibers, 7-10  m Both YAG and Medipix2 can resolve very low contrast objects Carbon Fibers Radiography Using CCD Camera with YAG Carbon Fibers Radiography Using Medipix2

Thank you for your attention! Poster ID 146 Monday PS III