Figure 12
A sequence of eight diffraction images from a magnesium alloy sample subjected to dynamic compression collected with the Keck-PAD is shown above along with the per-frame signals integrated over a fixed azimuthal angle. Each frame was acquired using a 180 ns integration time that captured one bunch train at CHESS beamline G3. The period between frames was 10 µs. The signal gain was 2.2 ADU per X-ray. A baseline correction has been performed on each detector tile (i.e. a constant value has been subtracted). In addition, four pixels in frame 4 had bit errors (an offset of 1024 ADU) that were corrected. This does not occur with later FPGA implementations. |