Three-dimensional model of x-ray induced microchannel plate output
Citation
Harding, E. C., & Drake, R. P. (2006). Three-Dimensional Model of X-Ray Induced Microchannel Plate Output. Physics of Plasmas, 13(9), 10E312. https://doi.org/10.1063/1.2220072
Keywords
- Microchannel plate (MCP)
- X-ray framing camera
- Pulse height distribution (PHD)
- Secondary electron yield (SEY)
- Three-dimensional (3D) model
- Gain
- X-ray detction
- Electron amplification
- Channel bias angle
- End-spoiling
Brief
This article presents the preliminary development of a three-dimensional model of a single microchannel plate channel in an attempt to simulate the pulse height distribution of the microchannel plate electron output.
Summary
This article presents a three-dimensional model of a single microchannel plate (MCP) channel. The model simulates the electron output of an MCP, an important component in x-ray framing cameras used in high-energy-density physics experiments. The model aims to understand and optimize the MCP's pulse height distribution, a significant contributor to image noise.
Some key features of the model include:
- It simulates the variation in the angle of incidence of x-rays.
- It considers that x-ray photons can strike different materials within the MCP.
- It accounts for the statistical variations in secondary electron yield and average channel gain.
Preliminary comparisons with experimental data show that the model accurately captures the range of pulse heights but may overestimate the number of pulses produced. Further refinements to both the experiments and the model are planned.