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

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.
 [1] ;  [1] ;  [2] ;  [2] ;  [2] ;  [2] ;  [3]
  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)
Publication Date:
Report Number(s):
Journal ID: ISSN 1748-0221; TRN: US1701196
Grant/Contract Number:
AC52-06NA25396; 14.587.21.0003; AC02-76SF00515
Accepted Manuscript
Journal Name:
Journal of Instrumentation
Additional Journal Information:
Journal Volume: 11; Journal Issue: 11; Journal ID: ISSN 1748-0221
Institute of Physics (IOP)
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP) (NA-10)
Country of Publication:
United States
47 OTHER INSTRUMENTATION; 42 ENGINEERING; 4H X-ray camera; Integration mode; Stacked hybrid 2D detector architecture; GaAs:Cr Sensor; Instrumentation for FEL; Solid state detectors; X-ray detectors
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1353082