Advanced Photon Source

An Office of Science National User Facility

Fast CCD

The APS and LBNL have jointly developed the FastCCD series of highly parallel readout direct-detection CCD cameras. Over the past three years, the second generation of the Fast CCD has been developed and deployed at the APS.The Fast CCD2 operates in a frame store mode with a 1Mpixel imaging area (30 micron pixels) currently running at 100 fps (sustained rates), but will eventually run at 200 fps in 1 MPixel mode. The APS team has implemented firmware to operate in a ROI mode (960 x 92 pixels) at 1000 fps, and plans to implement 5000 fps for 960 x 12 pixels, and was responsible for mechanical design, the back-end electronics and interface to an ATCA-based high-speed data acquisition system . In addition, the APS team has developed custom parallel software using MPI to perform real time imaging processing. The software package is based upon a QT-based program developed at LBL, and combines MPI and the EPICS control software into one complete application. The MPI library performs image descrambling, dark subtraction and lower-level discrimination for image storage in sparse matrix format. This was an extension of previous work on image processing using FPGAs. The primary application of this detector is for photon correlation spectroscopy experiments at APS beamline 8-ID. The first commissioning run occurred in December 2013 and by March 2014 the detector was put into routine operation at 8-ID. It has also had immediate scientific impact by enabling autocorrelations times of 0.001 second (16x times faster than the current 60 fps detector).

FCCD2 Detector Head


FCCD2 at 8-ID (XPCS)


FCCD2 System Diagram

Reference Material
Publications (Detector-related)

Publications (Science using the FCCD2 detector from 8-ID)