Characterization of a Timepix detector for use in SEM acceleration voltage range

Hybrid pixel direct electron detectors are gaining popularity in electron microscopy due to their excellent properties. Some commercial cameras based on this technology are relatively affordable which makes them attractive tools for experimentation especially in combination with an SEM setup. To support this, a detector characterization (Modulation Transfer Function, Detective Quantum Efficiency) of an Advacam Minipix and Advacam Advapix detector in the 15-30 keV range was made. In the current work we present images of Point Spread Function, plots of MTF/DQE curves and values of DQE(0) for these detectors. At low beam currents, the silicon detector layer behaviour should be dominant, which could make these findings transferable to any other available detector based on either Medipix2, Timepix or Timepix3 provided the same detector layer is used.

Automated summary

Hybrid pixel direct electron detectors are becoming popular in electron microscopy. A characterization of Advacam Minipix and Advacam Advapix detectors was done, including Point Spread Function images, MTF/DQE plots, and DQE(0) values. These findings may be applicable to other detectors based on Medipix2, Timepix, or Timepix3 with the same detector layer.