Table 1. CSPAD versus ePix10k parameters and performance numbers in the different fixed gain modes presented in this paper. The autoranging modes of the ePix10k are not presented here.
| Detector | CSPAD | ePix10k | |||
|---|---|---|---|---|---|
| Megapixels | 2.3 | 2.16 | |||
| Pixel size (µm) | 110 × 110 | 100 × 100 | |||
| Size (cm) | 18.6 × 18.6 | 16.5 × 16.5 | |||
| Coverage | 80% | 80% | |||
| Bit depth | 14 bit | 14 bit | |||
| Gain mode | High | Low | High | Medium | Low |
| Gain factor | 1 | 1/6 | 1 | 1/3 | 1/100 |
| Pedestal (ADU) | 1500 | 3100 | |||
| Gain (ADU/9.5 keV photon) | 46 | 7.6 | 162 | 48.6 | 1.62 |
| Saturation (9.5 keV photon) | 320 | 2000 | 80 | 270 | 8200 |
| eV/ADU | 206.5 | 1250 | 58.5 | 195 | 5864 |
| Raw r.m.s. (ADU) Fig. 3(c) | 4.78 | 2.18 | 6.32 | 3.09 | 2.36 |
| Noise r.m.s. (ADU) Fig. 3(d) | 4.34 | 2.10 | 5.54 | 2.88 | 2.33 |
| Common mode r.m.s. (ADU) Fig. 3(e) | 2.03 | 0.58 | 3.08 | 1.13 | 0.44 |
| Raw r.m.s. (eV) | 987 | 2725 | 371 | 603 | 13840 |
| Noise r.m.s. (eV) | 896 | 2625 | 325 | 562 | 13664 |
| Common mode r.m.s. (eV) | 419 | 725 | 181 | 221 | 2580 |
| Signal-to-noise (9.5 keV) | 10.6 | 3.6 | 29.2 | 16.9 | 0.7 |
| Signal-to-noise (9.5 keV) without CM removal | 9.6 | 3.5 | 25.6 | 15.7 | 0.7 |