Counting multiple X-rays per pulse with an avalanche photodiode detector

作     者：Powers, Liam T. Jacobsen, Aidan M. Durbin, Stephen M. 

作者机构：Department of Physics and Astronomy Purdue University West LafayetteIN47907 United States College of Electrical and Computer Engineering Purdue University West LafayetteIN47907 United States 

出 版 物：《Journal of Synchrotron Radiation》 (J. Synchrotron Radiat.)

年 卷 期：2025年第32卷第Pt 3期

页      面：629-633页

核心收录：

学科分类：07[理学] 070203[理学-原子与分子物理] 0702[理学-物理学] 

基　　金：We thank Xiaoyi Zhang (APS/Argonne) for sharing the APD construction designs  Diego Casa (APS/Argonne) for critical assistance with measurements  and Tim Mooney (APS/ Argonne) for guidance with ADC/FPGA hardware and software. This research was supported by the US Department of Energy under contract No. DE-SC0023176 

主　　题：X ray detectors 

摘      要：Avalanche photodiode detectors (APDs) at X-ray synchrotrons are typically limited to recording at most one photon per synchrotron pulse. Digitizing the APD amplifier outputs enables signal processing to accurately measure a mean count rate of at least four photons per pulse based on initial synchrotron measurements. Higher rates are readily achievable. This method allows APDs to be utilized for time-resolved measurements at much higher intensities than before. © 2025 International Union of Crystallography. All rights reserved.