| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1830869 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2007 | 4 Pages |
Abstract
In this paper, we apply the method of calculating the zero-frequency DQE using the concept of an average multiplicity to the Medipix2 detector. This photon counting pixel detector sets a discriminator threshold for the minimum energy needed to trigger a count. The average multiplicity of counts per detected photon and the detection efficiency depend on the threshold setting. Therefore, the DQE depends on this setting. We investigated the impact of physical effects on the DQE and present the according results generated with the Monte Carlo simulation ROSI for monoenergetic and for spectral X-ray sources. An optimum threshold setting can be derived.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
Jürgen Durst, Gisela Anton, Thilo Michel,