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Firmware lower-level discrimination and compression applied to streaming x-ray photon correlation spectroscopy area-detector data

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8 Author(s)
Madden, T. ; X-Ray Science Division, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, Illinois 60439, USA ; Fernandez, P. ; Jemian, P. ; Narayanan, S.
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We present a data acquisition system to perform on-the-fly background subtraction and lower-level discrimination compression of streaming x-ray photon correlation spectroscopy data from a fast charge-coupled device (CCD) area detector. The system is built using a commercial frame grabber with an on-board field-programmable gate array. The system is capable of continuously processing at least 60 CCD frames per second each consisting of 1024 × 1024 16-bit pixels with ≲ 15 000 photon hits per frame at a maximum compression factor of ≈95%.

Published in:

Review of Scientific Instruments  (Volume:82 ,  Issue: 7 )

Date of Publication:

Jul 2011

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