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![[Figure 2]](ay5559fig2mag.jpg)
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Figure 2
Pixel histogram of ePix100 data (gray) at ![[\bar{k} = 0.01]](teximages/ay5559fi1.gif) photons per pixel. (a) Blue crosses, green, red and orange lines are histograms from the detector simulations with different parameters. The histograms are normalized to the first photon peak for easier comparison. Panels (b) and (c) map out regions within a single pixel that have different single-photon contribution fractions. The black area denotes the region where a photon will contribute 98% of its generated charges to the readout of this pixel. The gray area denotes the region for more than 50% of the charges to be collected by this pixel. The dashed black lines are the 50% charge contribution boundary for the LSF model. The corners defined by the solid black lines are the areas where one photon contributes at least 2% (3 out of 151 ADUs) of the total charges to each of its three neighboring pixels. Panel (b) assumes a charge cloud size of S = 0.385 (units in pixel size). The percentages of the black, gray, white and corner areas are namely 8.3%, 82.3% and 10.4% and 21.4%, respectively. Panel (c) assumes S = 0.193, or a factor of two smaller than (b). The percentages of the black, gray, white and corner areas are 43.6%, 97.5%, 2.5% and 5.3%, respectively. |
![[Figure 2]](ay5559fig2.jpg)
 | JOURNAL OF SYNCHROTRON RADIATION |
ISSN: 1600-5775
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