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Title: Modeling blur in various detector geometries relevant to DARHT

Abstract

Monte Carlo transport codes have been used to model the detector blur and energy deposition in various detector geometries for MeV radiography which are applicable to DARHT. Segmented scintillator detectors, where low Z scintillators combined with a high-Z metal matrix, are designed such that the resolution increases with increasing metal fraction. The combination of various types of metal intensification screens and storage phosphor imaging plates has also been studied. A storage phosphor coated directly onto a metal intensification screen has superior performance over a commercial plate. Stacks of storage phosphor plates and tantalum intensification screens show an increase in energy deposited and detective quantum efficiency with increasing plate number, at the expense of resolution which degrades with plate number. Excellent agreement between simulation and experimental modulation transfer functions for select detector geometries was found.

Authors:
 [1];  [1];  [1]
  1. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1352435
Report Number(s):
LA-UR-17-23188
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Winch, Nicola M., Watson, Scott Avery, and Hunter, James F. Modeling blur in various detector geometries relevant to DARHT. United States: N. p., 2017. Web. doi:10.2172/1352435.
Winch, Nicola M., Watson, Scott Avery, & Hunter, James F. Modeling blur in various detector geometries relevant to DARHT. United States. https://doi.org/10.2172/1352435
Winch, Nicola M., Watson, Scott Avery, and Hunter, James F. 2017. "Modeling blur in various detector geometries relevant to DARHT". United States. https://doi.org/10.2172/1352435. https://www.osti.gov/servlets/purl/1352435.
@article{osti_1352435,
title = {Modeling blur in various detector geometries relevant to DARHT},
author = {Winch, Nicola M. and Watson, Scott Avery and Hunter, James F.},
abstractNote = {Monte Carlo transport codes have been used to model the detector blur and energy deposition in various detector geometries for MeV radiography which are applicable to DARHT. Segmented scintillator detectors, where low Z scintillators combined with a high-Z metal matrix, are designed such that the resolution increases with increasing metal fraction. The combination of various types of metal intensification screens and storage phosphor imaging plates has also been studied. A storage phosphor coated directly onto a metal intensification screen has superior performance over a commercial plate. Stacks of storage phosphor plates and tantalum intensification screens show an increase in energy deposited and detective quantum efficiency with increasing plate number, at the expense of resolution which degrades with plate number. Excellent agreement between simulation and experimental modulation transfer functions for select detector geometries was found.},
doi = {10.2172/1352435},
url = {https://www.osti.gov/biblio/1352435}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Apr 17 00:00:00 EDT 2017},
month = {Mon Apr 17 00:00:00 EDT 2017}
}