Item Units Q4R Q210 Q315 Detector type   Array (2 x 2) Array (2 x 2) Array (3 x 3) Active area: mm 188 x 188 210 x 210 315 x 315 inches 7.4 x 7.4 8.27 x 8.27 12.41 x 12.41 diag. inches 10.47 11.69 17.55 Inactive width strip microns 400 400 400 pixels 5 8 8 No. of Pixels: dim. 2304 x 2304 4096 x 4096 6144 x 6144 total (in millions) 5.31 16.78 37.75 Pixel size: microns 82 x 82 51 x 51 51 x 51 Phosphor (optimized) Angstrom 1 Angstrom 1 Angstrom 1 Angstrom Spatial resolution FWHM microns 90 90 90 pixels 1.1 1.76 1.76 Taper ratio ratio 3.7 to 1 3.7 to 1 3.7 to 1 Optical coupling  (CCD to taper) type Direct epoxy bond Direct epoxy bond Direct epoxy bond CCD Type mfg. EEV 05-30 AIMO Thomson THX 7899 (2K x 2K) Thomson THX 7899 (2K x 2K) CCD Pixel Size microns 22.5 x 22.5 14 x 14 14 x 14 Front End Gain:       1A e/X-ray photon 8.5 (1.25 ADU) 8.5 (2.5 ADU) 8.5 (2.5 ADU) 1.54 A (copper K-alpha) e/X-ray photon 6.5 (0.96 ADU) 6.5 (1.9 ADU) 6.5 (1.9 ADU) Full Well (Typical) electrons 440,000 270,000 270,000 Operating Temp. degrees C -50 -45 -45 Cooling Type method thermoelectric thermoelectric thermoelectric Dark Current e/pixel/sec 0.03 0.015 0.015 Controller Electronics type PI ST-138 ADSC Custom ADSC Custom No. of Binary Bits total 16 16 16 ADU's 65,535 65,535 65,535 Electrons/ADU electrons 7 3.36 3.36 Readout Times: Full Resolution seconds 9 and 3 1 1 2 x 2 binned seconds 1 0.5 0.5 Read Noise: 150 kHz pixel rate electrons 10 for 9 sec     1 MHz pixel rate electrons   18 estimated 18 estimated Dimensions mm 330 x 356 x 610 330 x 356 x 650 410 x 460 x 920 inches 13 x 14 x 24 13 x 13 x 24 16 x 18 x 36 Weight kg 48 54 141 pounds 105 120 310
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