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

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

doi:10.1088/1748-0221/15/06/p06025

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

Journal Article · Tue Jun 23 00:00:00 EDT 2020 · Journal of Instrumentation

DOI:https://doi.org/10.1088/1748-0221/15/06/p06025· OSTI ID:1657179

Philipp, H. T. ^[1]; Tate, M. W. ^[1]; Shanks, K. S. ^[1]; Purohit, P. ^[1]; Gruner, S. M. ^[1]

Cornell University, Ithaca, NY (United States)

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. Here, 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.

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Research Organization:: Cornell Univ., Ithaca, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Contributing Organization:: Cornell Hihg Energy Synchrotron Source Argonne National Laboratory

Grant/Contract Number:: SC0017631

OSTI ID:: 1657179

Journal Information:: Journal of Instrumentation, Vol. 15, Issue 06; ISSN 1748-0221

Publisher:: Institute of Physics (IOP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 5 works

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References (18)

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