Monte Carlo Simulations of High-speed, Time-gated MCP-based X-ray Detectors: Saturation Effects in DC and Pulsed Modes and Detector Dynamic Range
We present here results of continued efforts to understand the performance of microchannel plate (MCP)–based, high-speed, gated, x-ray detectors. This work involves the continued improvement of a Monte Carlo simulation code to describe MCP performance coupled with experimental efforts to better characterize such detectors. Our goal is a quantitative description of MCP saturation behavior in both static and pulsed modes. We have developed a new model of charge buildup on the walls of the MCP channels and measured its effect on MCP gain. The results are compared to experimental data obtained with a short-pulse, high-intensity ultraviolet laser; these results clearly demonstrate MCP saturation behavior in both DC and pulsed modes. The simulations compare favorably to the experimental results. The dynamic range of the detectors in pulsed operation is of particular interest when fielding an MCP–based camera. By adjusting the laser flux we study the linear range of the camera. These results, too, are compared to our simulations.
- Research Organization:
- National Security Technologies, LLC (NSTec), Mercury, NV (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NA)
- DOE Contract Number:
- DE-AC52-06NA25946
- OSTI ID:
- 942229
- Report Number(s):
- DOE/NV/25946-459; TRN: US0900706
- Journal Information:
- Review of Scientific Instruments, Vol. 79, Issue 10; Conference: 17th Topical Conference: High-Temperature Plasma Diagnostics; Albuquerque, New Mexico; May 11-15, 2008
- Country of Publication:
- United States
- Language:
- English
Similar Records
Monte Carlo simulations of high-speed, time-gated microchannel-plate-based x-ray detectors: Saturation effects in dc and pulsed modes and detector dynamic range
Advances in Performance of Microchannel Plate Detectors for HEDP Diagnostics