Voxtel Blog

Paper Published: Pixelated Detector with Photon Address Event Driven Time Stamping and Correlation

June 26, 2014

A Voxtel/University of Oregon team has published the paper “Pixelated Detector with Photon Address Event Driven Time Stamping and Correlation.”

In the paper, we present the design, manufacture, and test results of an asynchronous event-driven address time-stamped (EDATS) pixelated array detector, operational over correlation time spans ranging from less than 10−6 to greater than 104 seconds. The pixelated EDATS detector was designed to measure the equilibrium density fluctuations on a nanometer-length scale using small angle x-ray scattering in x-ray photon correlation spectroscopy (XPCS) experiments. The detector sensor chip assembly (SCA) includes a custom readout integrated circuit (ROIC), hybridized to a silicon photodiode array, optimized for 500 eV to 2000 eV x-ray photons. The detector is shown to be capable of handling x-ray photon event rates of 100 million x-ray events per second, with less than 85 nanoseconds timing jitter per event.

The paper, which is published in the IEEE Transactions on Nuclear Science, is available for download here and through the IEEE Xplore Digital Library here.