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ADVACAM S.r.o.
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Model WidePIX L 2(1)x10 -A Large Industrial Spectral Scanner Camera

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The large area imaging detector WIDEPIX L2(1)x10 – MPX3 with a resolution of 512 (256) x 2560 pixels is composed of Medipix3 hybrid detector electronics tiles. Each tile (256 x 256 pixels) is attached to a silicon or CdTe sensor. Therefore, the whole area of the WIDEPIX L2(1)x10 – MPX3 device is fully sensitive, and there are no gaps between sensor tiles. Each pixel has two integrated 12-bit digital counters and two energy discrimination thresholds. The counters store a number of registered particles, e.g., X-ray photons, with energy above the appropriate threshold. Both counters can be joined to a single 24-bit counter, providing an enhanced dynamic range. The particle counting principle eliminates any additional noise generated by the sensor or electronic readout. It allows for acquiring X-ray images with high contrast and wide dynamic range. Therefore, even low-contrast structures such as plastic or soft tissue are easily detectable in X-ray images.

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The camera is suitable for CT scanners, which can take advantage of large sensitive areas without gaps. The WIDEPIX L1x10 – MPX3 variant moreover supports a hardware-based Time-Delayed-Integration mode for online (continuous) scanning applications.

The energy discrimination thresholds of Medipix3 technology allow spectral X-ray imaging. Different materials in an inspected sample could then be identified based on their spectral X-ray attenuation properties. Energy spectra could be measured typically from 5 keV upwards. The intrinsic spatial resolution of the camera is defined by pixel size, which is 55 µm. The pixels on the tiles’ border are 2 times larger in one direction. The corner pixels of tiles are 2 times larger in both directions.

The Charge Summing Mode implemented in the pixel electronics provides hardware-based correction of signal cross-talk between pixels. This further considerably improves the detector spectral response and, therefore, also the quality of spectra measured in individual pixels.

The camera is connected to a computer via two ethernet cables.

Sensor Material: Si or CdTe
Si or CdTe 300 μm for Si; 1 mm for CdTe
Sensitive Area: 28 (14) x 140.8 mm
Number of Pixels: 512 (256) x 2560
Pixel Pitch: 55 μm
Resolution: 9 lp/mm
Readout Speed: 170 (1x10 tiles) and 80 (2x10 tiles) frames/s
Time-Delayed-Integration Yes, hardware based (1x10 tiles), 1.5 m/s
Thresholds per pixel 1 or 2
Threshold Step Resolution: 0.1 keV
Energy Resolution: 0.7-2.0 keV (Si) and 1.2-3.6 (CdTe)
Min Detectable Energy: 4 keV (Si) and 5 keV (CdTe)
Readout Chip: Medipix3
Pixel Mode of Operation: Counting in Single Pixel Mode (SPM) or Charge Summing Mode (CSM)
Counter depth 12 or 24 bits (configurable)

Connectivity: 2x Ethernet RJ-45
Weight: 3000 g
Dimensions: 210 mm x 190 mm x 42 mm (L x W x H)
Software: Pixet Pro
The camera is connected to a computer via an ethernet cable. All major operating systems are supported (MS Windows, Mac OS and LINUX). The PIXET PRO software used for detector operation is provided for free.