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Avalanche photodiodes as large dynamic range detectors for synchrotron radiation |
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| Authors: | TS Toellner W Sturhahn EE Alp PA Montano and M Ramanathan |
| Affiliation: | aAdvanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA bMaterials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA |
| Abstract: | We investigated silicon-based avalanche photodiodes (APDs) as X-ray detectors in terms of their linearity, maximum counting rates, and dynamic range with 8.4 keV synchrotron radiation. Measurements resulted in counting rates that extend from the APD's noise level of 10?2 Hz to saturation counting rates in excess of 108 Hz. In addition, by monitoring the APD's noise level and photon counting efficiency between synchrotron bursts, we demonstrate nine orders of magnitude dynamic range. |
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