Feasibility study of a ``4H'' X-ray camera based on GaAs:Cr sensor

Journal Article · Mon Nov 28 23:00:00 EST 2016 · Journal of Instrumentation

DOI: https://doi.org/10.1088/1748-0221/11/11/C11042 · OSTI ID:1351226

Dragone, Angelo ^[1]; Kenney, Chris ^[1]; Lozinskaya, Anastassiya ^[2]; Tolbanov, Oleg ^[2]; Tyazhev, Anton ^[2]; Zarubin, Andrei ^[2]; Wang, Zhehui ^[3]

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1. SLAC National Accelerator Lab., Menlo Park, CA (United States)
2. Tomsk State Univ. (United States)
3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Here, we describe a multilayer stacked X-ray camera concept. This type of technology is called `4H' X-ray cameras, where 4H stands for high-Z (Z>30) sensor, high-resolution (less than 300 micron pixel pitch), high-speed (above 100 MHz), and high-energy (above 30 keV in photon energy). The components of the technology, similar to the popular two-dimensional (2D) hybrid pixelated array detectors, consists of GaAs:Cr sensors bonded to high-speed ASICs. 4H cameras based on GaAs also use integration mode of X-ray detection. The number of layers, on the order of ten, is smaller than an earlier configuration for single-photon-counting (SPC) mode of detection [1]. High-speed ASIC based on modification to the ePix family of ASIC is discussed. Applications in X-ray free electron lasers (XFELs), synchrotrons, medicine and non-destructive testing are possible.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP) (NA-10)
• Grant/Contract Number: AC52-06NA25396
• OSTI ID: 1351226
• Report Number(s): LA-UR--16-27161
• Journal Information: Journal of Instrumentation, Journal Name: Journal of Instrumentation Journal Issue: 11 Vol. 11; ISSN 1748-0221
• Publisher: Institute of Physics (IOP)Copyright Statement
• Country of Publication: United States
• Language: English