HIGH SPEED PROCESSING FOR X RAY DETECTOR ARRAYS

能量阵列=色散X射线探测器阵列广泛应用于 同步辐射设施的生物研究，特别是 稀样在荧光模式下的吸收光谱 个别半导体光谱仪的堆积通常限制在 40-80,000次/秒。本研究建议增加 将单个探测器的处理速度提高10倍或更多 利用来自存储环源的X射线不是随机到达的事实 而是仅在由固定间隔隔开的时间。因此，如果一个 光子可以在更短的时间内完全处理，堆积在 可以完全消除探测器。因为这些处理时间是 比目前使用的短10倍，相当大的创新将是 保持可接受的能量分辨率所需的。在这一努力中，我们将 尝试确定是否可以通过以下组合来实现这一目标 时变滤波，探测器重新设计以最大限度地减少电容，以及 最新进展在CCD放大器设计中的应用。成功 将导致探测器能够计数到一百万次/秒，堆积 免费，这将通过系数增加这些实验的生产率 10%-20%。

Arrays of energy=dispersive x-ray detector arrays are heavily used in biological research at synchrotron radiation facilities, particularly for absorption spectroscopy in fluorescence mode on dilute samples because an individual semiconductor spectrometer typically becomes pileup limited at 40-80,000 counts/sec. The present research proposes to increase the processing rate of the individual detectors by a factor of 10 or more by using the fact that x-rays from storage ring sources do not arrive randomly but rather only at times separated by fixed intervals. Therefore, if a photon can be completely processed in a shorter time, pileup in the detector can be completely eliminated. Because these processing times are shorter by 10 than those currently used, considerable innovation will be required to retain acceptable energy resolution. In this effort we will attempt to determine whether this goal can be reached by a combination of time variant filtering, detector redesign to minimize capacitance, and application of recent advances in the design of CCD amplifiers. Success would lead to detectors capable of counting a million counts/sec, pileup free, which would increase the productivity of these experiments by factors of 10-20.