Publications

Synchrotron characterization of high-Z, current-mode X-ray detectors

Looker, Quinn M.; Wood, Michael G.; Miceli, Antonino; Niraula, Madan; Yasuda, Kazuhito; Porter, John L.

Fast X-ray detectors are critical tools in pulsed power and fusion applications, where detector impulse response of a nanosecond or better is often required. Semiconductor detectors can create fast, sensitive devices with extensive operational flexibility. There is typically a trade-off between detector sensitivity and speed, but higher atomic number absorbers can increase hard X-ray absorption without increasing the charge collection time, provided carriers achieve high velocity. This paper presents X-ray pulse characterization conducted at the Advanced Photon Source of X-ray absorption efficiency and temporal impulse response of current-mode semiconductor X-ray detectors composed of Si, GaAs, and CdTe.