Technical Specifications
Technical Specifications
The pnCCD Camera
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pnCCD with 264 x 264 pixels
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Readout speed: 1 000 fps (full frame) new in 2019: 2000 fps (full frame)
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Up to 20 000 fps (windowing/binning mode)
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Radiation hard Lead shielded camera head (bottom mount)
Parameter | pnCCD properties |
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Physical pixel size | 48 µm × 48 µm |
Active thickness | 450 µm |
Number of physical pixels | 264 × 264= 69 696 plus frame store area |
Number of subpixels | 1 320 × 1 320= 1.75 × 106 resolution points |
Active area | 12.7 mm × 12.7 mm (161 mm2) |
Binning modes (examples) | 2-fold binning: 264 × 132 pixels (2 000 fps) 4-fold binning: 264 × 66 pixels (4 000 fps) |
Windowing modes (examples) | 132 × 264 pixels (2 000 fps) 24 × 264 pixels (10 000 fps) |
Image integration time | down to 25 µs |
Pixel readout rate | up to 70 MegaPixels/s |
External trigger | yes (accepts up to 4 triggers) |
Signal (per 80 keV primary electron) | 22 000 signal electrons |
Readout noise (RMS) | Typically 30 signal electrons |
Sub-pixel spatial resolution | Δx < 10 µm (rms) for 80 keV TEM electrons |
Charge handling capacity | up to 400,000 signal electrons per pixel |