Abstract
We present the spatial resolution estimation methods for a photon
counting system with a Vernier anode. A limiting resolution model is
provided according to discussions of surface encoding structure and
quantized noise. The limiting resolution of a Vernier anode is revealed to
be significantly higher than that of a microchannel plate. The
relationship between the actual spatial resolution and equivalent noise
charge of a detector is established by noise analysis and photon position
reconstruction. The theoretical results are demonstrated to be in good
agreement with the experimental results for a 1.2 mm pitch Vernier
anode.
© 2016 Chinese Laser Press
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