(1) University of Glasgow, Kelvin Building, Glasgow G12 8QQ, Scotland.
(2) CCLRC, Rutherford Appleton Laboratory, Oxfordshire, UK
(3) Medical Physics and Bioengineering department, University College London
(4) Department of Physics, Liverpool University, UK
This work will report on the characterisation of a new active pixel sensor, Vanilla. The Vanilla comprises of 512x512 (25$\mu$m squared) pixels. The sensor has a 12 bit digital output for full frame mode, although it can also be readout in analogue mode, whereby it can also be read in a fully programmable Region-Of-Interest (ROI) mode. In full frame, the sensor can operate at a readout rate of more than 100 frames per second (fps), while in ROI mode, the speed depends on the size, shape and number of ROIs. For example, a ROI of 6x6 pixels can be read at 20,000fps in analogue mode. Using Photon Transfer Curve (PTC) measurements allowed for the calculation of the read noise, shot noise, full well capacity and camera gain constant of the sensor. Spectral response measurements detailed the quantum efficiency (QE) of the detector through the UV and visible region. Analysis of the ROI readout mode was also performed. Such measurements suggest that the Vanilla APS will be suitable for a wide range of applications including particle physics and medical imaging.
9th International Workshop on Radiation Imaging Detectors
Erlangen, Germany