Optimization for Spatial Resolution and Count Rate of a Far Ultraviolet Photon-Counting Imaging Detector Based on Induced Charge Position-Sensitive Anode

Ni, Qiliang

doi:10.3788/aos201434.0804001

Cited by 1 publication

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“…The purpose of Gaussian shaping amplifiers is not only to transform the shape of the CSA output pulse from a long tail pulse to a Gaussian curve, but also to filter much of the noise from the signal of interest. Generally, the longer the shaping time, the better the noise filtering effect [18]. The shaping time of amplifiers with satisfactory noise filtering capability is usually more than several hundred nanoseconds.…”

Section: Detector Structurementioning

confidence: 99%

A Photon Imaging Detector Model with High Resolution and High Counting Rate

Jiang

2023

Applied Sciences

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A cross strip (XS) anode detector is a photon-counting imaging detector with high spatial resolution. However, due to the Poisson distribution characteristics of the photons emitted by the target, photons with a small time interval will cause signal superposition and resolution degradation. This is particularly significant at a high photon count rate. The key link that restricts the counting rate of the XS detector is the electronic system. In this paper, we propose a new electronic signal processing system scheme using a digital trapezoidal shaping filter instead of a traditional Gaussian shaping filter, which enables the detector to maintain a high resolution at high count rates. In order to verify the feasibility of the scheme, the relationship between shaping errors and shaping parameters is studied. Furthermore, the relationship between spatial resolution and photon-counting rate at different noise levels is revealed by numerical simulation. The results show that the detector can achieve a spatial resolution of <50 μm at a photon count rate of >6 MHz for 1000 e RMS noise.

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Section: Detector Structurementioning

confidence: 99%

A Photon Imaging Detector Model with High Resolution and High Counting Rate

Jiang

2023

Applied Sciences

View full text Add to dashboard Cite

show abstract

Optimization for Spatial Resolution and Count Rate of a Far Ultraviolet Photon-Counting Imaging Detector Based on Induced Charge Position-Sensitive Anode

Cited by 1 publication

References 0 publications

A Photon Imaging Detector Model with High Resolution and High Counting Rate

A Photon Imaging Detector Model with High Resolution and High Counting Rate

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