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High dynamic range CdTe mixed-mode pixel array detector (MM-PAD) for kilohertz imaging of hard x-rays

Cornell Affiliated Author(s)

Author

H.T. Philipp
M.W. Tate
K.S. Shanks
P. Purohit
Sol Gruner

Abstract

A hard x-ray, high-speed, high dynamic range scientific x-ray imager is described. The imager is based on the mixed-mode pixel array detector (MM-PAD) readout chip coupled to a 750 μm thick cadmium telluride (CdTe) sensor. The full imager is a 2 × 3 tiled array of MM-PAD sensor/readout chip hybrids. CdTe improves detection for high energy x-rays as compared to silicon sensors, enabling efficient x-ray imaging to extend to >100 keV . The detector is capable of 1 kHz imaging and in-pixel circuitry has been designed to allow for well depths of greater than 4 × 106 80 keV x-rays. A charge integrating front-end allows for quantitative measurement of high flux x-ray images beyond the capabilities of photon counting detectors. Detector performance is summarized and experimental measurements are presented. © 2020 IOP Publishing Ltd and Sissa Medialab.

Date Published

Journal

Journal of Instrumentation

Volume

15

Issue

6

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85090899500&doi=10.1088%2f1748-0221%2f15%2f06%2fP06025&partnerID=40&md5=e7502340210bb5db8837143dc4ee1c76

DOI

10.1088/1748-0221/15/06/P06025

Group (Lab)

Sol M. Gruner Group

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