title: Firmware lower-level discrimination and compression applied to streaming x-ray photon correlation spectroscopy area-detector data.
abstract: 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%.
authors.affiliation: X-Ray Science Division, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, Illinois 60439, USA. tmadden@aps.anl.gov
authors.forename: T
authors.initials: T
authors.lastname: Madden
authors.forename: P
authors.initials: P
authors.lastname: Fernandez
authors.forename: P
authors.initials: P
authors.lastname: Jemian
authors.forename: S
authors.initials: S
authors.lastname: Narayanan
authors.forename: A R
authors.initials: AR
authors.lastname: Sandy
authors.forename: M
authors.initials: M
authors.lastname: Sikorski
authors.forename: M
authors.initials: M
authors.lastname: Sprung
authors.forename: J
authors.initials: J
authors.lastname: Weizeorick